Climate and monthly weather forecastAlton, UT
Climate and monthly weather forecast
The climate of Alton
As per the Köppen climate classification, Alton, Utah resides in a Mediterranean, warm summer zone referred to as Csb. This geographical classification is underpinned by average temperature ranges that deviate from the chill of 17.6°F (-8°C) in January, soaring to a warmth of 77.9°F (25.5°C) come July. Changes in relative humidity paint a fluctuation march, from a damp 77% in January, giving way to relatively arid conditions at 29% in June.Rainfall also sees a significant shift throughout the year with 1.42" (36mm) in January, dipping to 0.39" (10mm) in June before reaching a crescendo of 3.98" (101mm) in July. These weather alterations are compounded by variations in daylight duration, sliding synchronously from 9.9 hours in January to its zenith at 14.7 hours in June. A similar trend is replicated in sunshine hours, commencing with 5.8 hours in January and culminating at 11.7 hours in June.
Unique weather patterns emerge across Alton's weather tapestry. Snowfall, notably absent from May to September, peaks at 14.06" (357mm) in December. Similarly, a remarkable rise in rainfall is registered in July, paired with a significant drop in consecutive months. These intermittent changes and more punctuate the weather narrative of the year.
The best time to visit Alton
Peak conditions in Alton for potential visitors are during the late spring and early summer months, with May and June providing the most pleasant experiences. During this time, average high temperatures play around the mark of 60°F (15.6°C) to 74°F (23.3°C), providing warmth without being overly oppressive. The contrast in relative humidity, with a considerable drop to 42% in May and reaching its lowest point at 29% in June, offers dry conditions that blend well with the warmth.The worst time to visit Alton
January in Alton may pose a challenging time for visitors. During this month, temperatures stoop down to an average low of 17.6°F (-8°C), coupled with high relative humidity peaking at 77% for the year. The combination of cold temperatures and high humidity might prove too harsh for some. Furthermore, snowfall is substantial in this period, averaging 11.06" (281mm) in the same month, which may impede travel plans and outdoor activities.Spring weather in Alton
Spring weather in Alton brings an awakening of warmth as temperatures rise from an average high of 42.4°F (5.8°C) in March to a soothing 59.9°F (15.5°C) in May. The atmosphere becomes less humid, as relative humidity decreases from 65% in March to 42% in May. Correspondingly, hours of daylight lengthen from 12 hours in March to 14.2 hours in May, offering more opportunities for daytime exploration.Summer weather in Alton
Alton's summer welcomes temperatures that provide warmth without the discomfort of extreme heat. High average temperatures commence in the 70s°F, beginning at 74.3°F (23.5°C) in June and remaining steady, with the warmest month, July, at 77.9°F (25.5°C). Humidity reaches its lowest point of 29% in June and gradually ascends throughout the summer months. The duration of daylight remains generous, from 14.7 hours in June to 13.6 hours in August, fostering favorable conditions for outdoor activities.Autumn weather in Alton
Autumn in Alton manifests a gradual cooling down, with high temperatures falling from 68.9°F (20.5°C) in September to 43.9°F (6.6°C) in November. Meanwhile, the humidity remains relatively stable, hovering around the 50% mark throughout the season. As autumn progresses, the amount of sunshine hours gradually declines from 9.6 hours in September to 6.8 hours in November.Winter weather in Alton
Winter in Alton presents a colder climate, with the temperature in December topping at 32.9°F (0.5°C) and averaging at a low of 17.2°F (-8.2°C). A significant escalation in relative humidity from 58% in November to 75% in January results in a damp, cold winter. Snowfall is the season's defining factor, absent from the previous season but commencing with an average of 14.06" (357mm) in December. Shorter days compound the winter impression, with daylight hours shrinking to 9.6 in December. In this period, Alton dons its white winter blanket.Weather in January
January in Alton, Utah presents a chilly landscape, with residents experiencing the wintry vibes of the year's start. From a climatological viewpoint, the month is noted for it snowfall, accumulating up to 11.06" (281mm), making it the second most snowy month. Weather in January »Weather in February
The second month of the year, February, perpetuates the winter tale of Alton, but intends some moderation. There is a small rise in overall temperatures compared to January, with the wintry feel persisting. From a climatological standpoint, February sets a record in terms of snowfall, recording 12.6" (320mm). Weather in February »Weather in March
March carries the reminder of winter in Alton, yet foretells the advent of spring. The tight wintry clasp starts to unravel as temperatures slightly rise from February's lows. Speaking of meteorological extremes, March experiences an increase in rainfall, with a total of 1.81" (46mm). Weather in March »Weather in April
As spring embellishes Alton in April, the weather truly begins to shift. The rise in temperatures from March becomes more evident this month, showcasing the beauty of spring. Figures indicate roughly 1.34" (34mm) of rainfall for April, which drops from the previous month. Weather in April »Weather in May
May brings an evident warmth in Alton, confirming the consistent dominance of spring in this month. As it steps into the climatic scenario after April, May registers an increased daylight duration. Approximately 1.81" (46mm) of rainfall consolidate the replacing of the cold with a warmer, merrier atmosphere. Weather in May »Weather in June
Summers officially herald themselves in Alton during June, completely merging the chilly past with the heated present. Compared to May, the rise in temperatures is most felt in June than any other transition in the year. The summer month records the lowest rainfall throughout the year, with just 0.39" (10mm). Weather in June »Weather in July
July asserts itself as the heart of summer in Alton, Utah, inducing the residents in the rhythm of heated days and warm nights. The heat prevails from June, with the temperature at its peak. Meteorological records observe the highest amount of rainfall this month, tallying it up to 3.98" (101mm). Weather in July »Weather in August
Riding through the last days of summer, August retains most of the heat from July in Alton. As per climatological data, the rainfall measures are slightly less than the previous month, amounting to 3.31" (84mm). The evenings bring some respite from the daytime heat, allowing people to enjoy outdoor dinners and gatherings. Weather in August »Weather in September
As Alton steps into September, it begins to shrug off its summer attire and prepares for the gentler embraces of Fall. Following August, the recorded temperatures show a slight drop, and the meteorological data presents a rainfall of 1.73" (44mm). Weather in September »Weather in October
October weaves autumn's magic over Alton, gifting its residents with picturesque landscapes and pleasant weather. Though the mercury levels descend from September, the warmth remains comfortably palpable. Climatological records indicate an average rainfall of 1.22" (31mm), lower than the past months. Weather in October »Weather in November
November in Alton unfolds the preliminary chapters of winter, subtly hinting at the impending chill. Notably colder than October, the climate conditions register the onset of snowfall with 10.12" (257mm). Towards the end of this month, the city gears up to ring in the snow-filled festivities. Weather in November »Weather in December
Alton in December is the epitome of a winter wonderland, where the city is elegantly veiled under the snow's white mantle. The climatological data shows a stark drop in temperatures from November. With the highest snowfall of 14.06" (357mm) in the year, December marks itself as the coldest month in Alton. Weather in December »Updated: Aug 30, 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
January is the most humid month in Alton, with an average relative humidity of 77%.
Throughout the year, there are 84.8 rainfall days, and 22.05" (560mm) of precipitation is accumulated.
January through May, September through December are months with snowfall in Alton.
In Alton, Utah, during the entire year, snow falls for 66.4 days and aggregates up to 75.08" (1907mm) of snow.
January and December, with an average of 5.8h of sunshine, are months with the least sunshine.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
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.
With an average relative humidity of 29%, June is the least humid month.
June is the month with the least rainfall. Rain falls for 4.6 days and accumulates 0.39" (10mm) of precipitation.
In Alton, snow does not fall in June through August.
The month with the longest days is June, with an average of 14h and 42min of daylight.
With an average of 11.7h of sunshine, June has the most sunshine of the year.
June through August, with an average maximum UV index of 5, are months with the highest UV index.
In Alton, the peak average temperatures are observed in July, with a high of 77.9°F (25.5°C) and a low of 55.9°F (13.3°C).
The month with the most rainfall is July, when the rain falls for 15.8 days and typically aggregates up to 3.98" (101mm) of precipitation.
The coldest period tends to be December, when average temperatures fluctuate between a high of 32.9°F (0.5°C) and a low of 17.2°F (-8.2°C).
The month with the most snowfall is December, when snow falls for 12.5 days and typically aggregates up to 14.06" (357mm) of snow.
The month with the shortest days in Alton, Utah, is December, with an average of 9h and 36min of daylight.
Average temperature
Alton, UT
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (32.9°F).
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is December (17.2°F).
Average pressure
Alton, UT
- Average pressure in January:
30.2"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.86"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.94"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.15"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Alton, UT
- Average wind speed in January:
6.7mph - Average wind speed in February:
7.1mph - Average wind speed in March:
8.1mph - Average wind speed in April:
9mph - Average wind speed in May:
8.8mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
6.7mph - Average wind speed in October:
7.4mph - Average wind speed in November:
7.1mph - Average wind speed in December:
6.9mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Alton, UT
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is June (29%).
Average rainfall
Alton, UT
- Average rainfall in January:
1.42" - Average rainfall in February:
1.81" - Average rainfall in March:
1.81" - Average rainfall in April:
1.34" - Average rainfall in May:
1.81" - Average rainfall in June:
0.39"
- Average rainfall in July:
3.98" - Average rainfall in August:
3.31" - Average rainfall in September:
1.73" - Average rainfall in October:
1.22" - Average rainfall in November:
1.42" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is July (3.98").
The driest month (with the least rainfall) is June (0.39").
Average rainfall days
Alton, UT
- Average rainfall days in January:
3.3 days - Average rainfall days in February:
2.8 days - Average rainfall days in March:
5 days - Average rainfall days in April:
7.7 days - Average rainfall days in May:
8.3 days - Average rainfall days in June:
4.6 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
10.1 days - Average rainfall days in October:
6.1 days - Average rainfall days in November:
2.9 days - Average rainfall days in December:
3.9 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall
Alton, UT
- Average snowfall in January:
11.06" - Average snowfall in February:
12.6" - Average snowfall in March:
13.58" - Average snowfall in April:
5.83" - Average snowfall in May:
4.65" - Average snowfall in June:
0"
The month with the highest snowfall is December (14.06").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Alton, UT
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
12.1 days - Average snowfall days in March:
10.8 days - Average snowfall days in April:
7.3 days - Average snowfall days in May:
3.9 days - Average snowfall days in June:
0.2 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.2 days - Average snowfall days in October:
3.5 days - Average snowfall days in November:
6.1 days - Average snowfall days in December:
12.5 days
The month with the highest number of snowfall days is December (12.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Alton, UT
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
5h and 48min - Average sunshine in February:
7h and 12min - Average sunshine in March:
8h and 0min - Average sunshine in April:
9h and 36min - Average sunshine in May:
10h and 48min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
11h and 18min - Average sunshine in August:
11h and 30min - Average sunshine in September:
9h and 36min - Average sunshine in October:
7h and 42min - Average sunshine in November:
6h and 48min - Average sunshine in December:
5h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days
Alton, UT
- Average sunshine days in January:
21 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
16.4 days - Average sunshine days in May:
17.9 days - Average sunshine days in June:
23.4 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
14 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
21.8 days - Average sunshine days in November:
22.8 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is June (23.4 days).
The month with the least sunshine days is July (13.3 days).
Average UV index
Alton, UT
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Alton, UT
The months with the most cloud cover are February and December (Cloud cover 38).
The month with the least cloud cover is June (Cloud cover 10).
Average visibility
Alton, UT
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
