Climate and monthly weather forecastAmerican Fork, UT
Climate and monthly weather forecast
The climate of American Fork
Predominantly categorized under the Humid continental (Dfa type) by Köppen climate classification, the municipality of American Fork, Utah experiences distinct variations in seasonal temperatures and substantial rainfall throughout the year. This climate type signifies no dry season with hot summers being prevalent.Temperatures fluctuate significantly over the year in American Fork. High temperatures average from 32.4°F (0.2°C) in the colder months of January and December, and rise to the warmest month being July, with an average high of 85.3°F (29.6°C). Meanwhile, the low-temperature averages range from 15.8°F (-9°C) in January, the coldest month, to a considerably warmer 58.1°F (14.5°C) in July. The relative humidity follows the opposite pattern, starting at 86% in January, then gradually lessens to a dry 38% in July and August.
In terms of precipitation, both rainfall and snowfall contribute the annual averages. Rainfall ranges from the lowest in June, receiving just 0.75" (19mm), to the highest in April and December, with average monthly precipitation of 1.93" (49mm). As for the snowy conditions, the heavy snowfall is typically from 11.06" (281mm) in January to nothing between June and October, picking back up in November with 4.69" (119mm), and reaching its peak again in December at 10.16" (258mm).
The wide spectrum of climatological parameters extends to aspects of sunlight and wind as well. Daylight hours peak at 15 hours in June and diminish to 9.3 hours by December. Simultaneously, average UV index follows the same pattern, soaring from 1 in January to 6 in July. Albeit, the wind speeds do not see such extremes, hovering around 4.6mph (7.4km/h) in January to 6.2mph (10km/h) in April, and dipping back to 5.2mph (8.4km/h) at the year's end.
The best time to visit American Fork
The most pleasant stretch of the year for a visit to American Fork would be from May to September, when the climate conditions are most enjoyable. During these months, temperatures range from 63°F (17.2°C) to 82.9°F (28.3°C) (high) and 39.7°F (4.3°C) to 57°F (13.9°C) (low), conducive for outdoor exploration. The humidity percentages significantly decrease too, dropping to around 40% in June from the higher 80-90s in 'colder' months.This period also enjoys the most daily sunshine hours with averages of 11.1 hours in May to 11.9 hours in August. Subsequently, the UV index is at its highest and ideal for those eager to catch some rays. However, the relatively lower rainfall during this period, especially 0.75" (19mm) in June, ensures that outdoor plans are rarely disrupted.
The worst time to visit American Fork
Plan a trip to American Fork in the colder months of the year might be less enjoyable for travelers seeking mild weather and outdoor activities. The period from December to February sees temperatures drop drastically with high temperatures averaging between 32.4°F (0.2°C) to 35.6°F (2°C) and lows reaching a freezing 15.8°F (-9°C) to 20.3°F (-6.5°C).Additionally, these months bring an increase in precipitation, both in terms of rainfall and snowfall. Expect an approximate of 1.93" (49mm) of rainfall in December and January each, along with substantial snowfall, around 11.06" (281mm) in January. Furthermore, shorter daylight hours during these months result in less sunshine and outdoor time for visitors.
Spring weather in American Fork
From March to May, American Fork experiences an upsurge in temperature, giving rise to the refreshing spring season. Temperatures increase progressively, from highs of 44.6°F (7°C) in March to 63°F (17.2°C) in May and lows from 27.5°F (-2.5°C) to 39.7°F (4.3°C). The season also sees a decrease in relative humidity, making the climate more enjoyable.Rainfall too sees an uptick, with each month receiving approximately 1.85" (47mm) in March and 1.93" (49mm) in April, dropping slightly to 1.42" (36mm) in May. Snowfall yet begins to decrease noticeably from 5.39" (137mm) in March to a mere 0.12" (3mm) in May.
Summer weather in American Fork
Experiencing the characteristic hot summers of the Dfa climate, American Fork experiences temperatures that average from 63°F (17.2°C) to 85.3°F (29.6°C) (high) and 39.7°F (4.3°C) to 58.1°F (14.5°C) (low) between June to August, making it the warmest season. A combination of declining humidity, increasing daylight hours (peaking at 15 hours in June), and a surge in sunshine hours contribute to the formation of long, hot summers.The defining feature of this season, though, is the low rainfall, with 0.75" (19mm) being the lowest in June, and no snowfall across the season, making it ideal for outdoor activities and water sports.
Autumn weather in American Fork
Fall in American Fork from September to November brings a gradual decrease in temperature, with high temperatures declining from 74.1°F (23.4°C) to 44.6°F (7°C) and low temperatures from 48.9°F (9.4°C) to 27.5°F (-2.5°C). The humidity begins to rise again, starting at 43% in September and reaching 65% in November.As compared to summer, both rainfall and snowfall see a slight increase during this season. Rainfall ranges from 0.98" (25mm) in September to 1.22" (31mm) in November, and snowfall begins to make an appearance in November with an average of 4.69" (119mm).
Winter weather in American Fork
Winter takes a firm hold from December to February, marked by snowfall and temperatures dropping below freezing. Average high temperatures vary from 32.4°F (0.2°C) to 35.6°F (2°C), while the lows can drop to between 15.8°F (-9°C) and 20.3°F (-6.5°C).Understandably, this season is the coldest and is characterized by high precipitation, with rainfall ranging from 1.22" (31mm) in November to 1.93" (49mm) in December and January. Snowfall is significant, peaking at 11.06" (281mm) in January. However, it is this winter wonderland image that attracts individuals interested in winter sports like skiing and snowboarding.
Weather in January
January in American Fork, Utah, ushers in the New Year with a chill, typically exhibiting the coldest temperatures of the season. A thick blanket of snow usually continues to wrap the city, with a snowfall accumulation of 11.06" (281mm). Weather in January »Weather in February
February displays a slight increase in temperature compared to January, but the weather in American Fork continues to be dominated by winter's chill. Snowfall is slightly less intense than in January, marking a gradual transition towards spring. Weather in February »Weather in March
The weather in March provides a noticeable shift as winter starts to recede, giving way to the early signs of spring. Snowfall reduces significantly to 5.39" (137mm), as the city starts to thaw out from winter's freeze. A slow yet steady rise in temperature brings new life to the scenic landscapes of American Fork. Weather in March »Weather in April
April sees American Fork further embracing the charms of spring weather, with temperatures continuing their upward climb from March. Rainfall replaces snow, with 1.93" (49mm) of precipitation typically recorded during the month. The changes brought by the season become more apparent as the city starts to get greener. Weather in April »Weather in May
In May, American Fork basks in arguably the most pleasant weather conditions of the year. However, it is worth noting that 1.42" (36mm) of rainfall is typically recorded during this month. People can comfortably indulge in outdoor pursuits as the spring weather creates an idyllic ambience with perfect temperatures and ample sunshine. Weather in May »Weather in June
June ushers in the summer season in American Fork, bringing the highest daylight hours of the year. The temperatures are comfortably warm, and the weather stays relatively dry with a stark reduction in rainfall from May to June. The city is vibrant under clear, mainly cloudless skies, and sunny days are the norm. Weather in June »Weather in July
July marks the peak of summer in American Fork. It is the hottest month with temperatures soaring to 85.3°F (29.6°C). Despite the high heat, humidity remains low, preventing the weather from becoming muggy and uncomfortable. The city comes alive with summer festivities amidst the typically clear skies and abundant sunshine. Weather in July »Weather in August
The weather in August in American Fork shows a gradual cooling trend from July's peak summer conditions. The temperature witnesses a slight dip but the month continues to retain the summer character. The city basks in plentiful sunshine under mostly clear skies, encouraging outdoor activities. Weather in August »Weather in September
Weather in September in American Fork introduces the first hints of the impending fall season. There is a significant drop in temperature from August's high, and autumnal color starts to paint the city’s landscape. September's weather is known to be changeable, offering both the last warm summer days and the initial fresh autumn chills. Weather in September »Weather in October
October embraces autumn in full as temperatures continue their downward trend from September in American Fork. The city is awash with the hues of fall, under mostly clear skies. The weather is much cooler than in the previous month, yet it remains comfortable for most outdoor activities. Weather in October »Weather in November
November marks the transition from autumn to winter in American Fork. The weather becomes noticeably colder, with temperatures resembling those of early winter. However, the snowfall is relatively light at 4.69" (119mm). The seasonal change brings shorter daylight hours, adding a distinct chill to the air. Weather in November »Weather in December
December in American Fork signals the beginning of winter, with a significant drop in temperature from November, visible by the average low dipping to 17.2°F (-8.2°C). Snowfall intensifies, recording 10.16" (258mm), closely matching the amount seen at the beginning of the year. Weather in December »Updated: Jul 3, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Temperatures reach their minimum during January and December, recording an average high-temperature of 32.4°F (0.2°C).
With an average relative humidity of 86%, January is the most humid month.
Throughout the year, in American Fork, there are 123.2 rainfall days, and 16.73" (425mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
January is the month with the most snowfall. Snow falls for 12.7 days and accumulates 11.06" (281mm) of snow.
Throughout the year, in American Fork, there are 58.5 snowfall days, and 44.49" (1130mm) of snow is accumulated.
With an average of 5.4h of sunshine, January has the least sunshine of the year.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
The wettest months in American Fork are April and December, with an average 1.93" (49mm) of rainfall.
June is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.75" (19mm) of precipitation.
In American Fork, snow does not fall in June through September.
The month with the longest days is June, with an average of 15h and 0min of daylight.
American Fork's temperature records reveal July as the warmest month, marked by average highs of 85.3°F (29.6°C) and lows of 58.1°F (14.5°C).
With an average relative humidity of 38%, July is the least humid month.
With an average maximum UV index of 6, July is the month with the highest UV index.
The month with the most sunshine is August, with an average of 11.9h of sunshine.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
American Fork, UT
The warmest month (with the highest average high temperature) is July (85.3°F).
The months with the lowest average high temperature are January and December (32.4°F).
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure
American Fork, UT
- Average pressure in January:
30.27"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.21"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
American Fork, UT
- Average wind speed in January:
4.6mph - Average wind speed in February:
5.5mph - Average wind speed in March:
6mph - Average wind speed in April:
6.2mph - Average wind speed in May:
5.4mph - Average wind speed in June:
6mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.6mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5.5mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).
Average humidity
American Fork, UT
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is July (38%).
Average rainfall
American Fork, UT
- Average rainfall in January:
1.85" - Average rainfall in February:
1.81" - Average rainfall in March:
1.85" - Average rainfall in April:
1.93" - Average rainfall in May:
1.42" - Average rainfall in June:
0.75"
- Average rainfall in July:
0.94" - Average rainfall in August:
0.94" - Average rainfall in September:
0.98" - Average rainfall in October:
1.1" - Average rainfall in November:
1.22" - Average rainfall in December:
1.93"
The wettest months (with the highest rainfall) are April and December (1.93").
The driest month (with the least rainfall) is June (0.75").
Average rainfall days
American Fork, UT
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
10.3 days - Average rainfall days in March:
13.7 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
7.3 days
- Average rainfall days in July:
9.3 days - Average rainfall days in August:
9.7 days - Average rainfall days in September:
9.7 days - Average rainfall days in October:
9.4 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is May (14.3 days).
The months with the least rainy days are June and November (7.3 days).
Average snowfall
American Fork, UT
- Average snowfall in January:
11.06" - Average snowfall in February:
9.45" - Average snowfall in March:
5.39" - Average snowfall in April:
2.76" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is January (11.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
American Fork, UT
- Average snowfall days in January:
12.7 days - Average snowfall days in February:
11.9 days - Average snowfall days in March:
8.6 days - Average snowfall days in April:
4.6 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1.2 days - Average snowfall days in November:
6.2 days - Average snowfall days in December:
13 days
The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
American Fork, UT
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
5h and 24min - Average sunshine in February:
6h and 36min - Average sunshine in March:
8h and 6min - Average sunshine in April:
9h and 54min - Average sunshine in May:
11h and 6min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 54min - Average sunshine in September:
10h and 0min - Average sunshine in October:
7h and 30min - Average sunshine in November:
6h and 42min - Average sunshine in December:
5h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days
American Fork, UT
- Average sunshine days in January:
15.7 days - Average sunshine days in February:
11.4 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
19.3 days
- Average sunshine days in July:
15.9 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
13.9 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (11.4 days).
Average UV index
American Fork, UT
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
American Fork, UT
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility
American Fork, UT
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
