Climate and monthly weather forecastWilliams, AZ
Climate and monthly weather forecast
The climate of Williams
Williams, Arizona, USA, is situated in a climate classified as Csb according to Köppen climate classification. This indicates a Mediterranean climate with warm summers. A number of weather conditions unfold over the year, rendering the climate varied and dynamic. Across the 12 months, one can unearth a notable range in temperature patterns, humidity levels, rainfall amounts, and wind speeds.The temperatures reach their pinnacle in July with a high of 84.4°F (29.1°C), whilst they hit their nadir in January with a low of 27°F (-2.8°C). Humidity levels are relatively moderate, with the highest registered humidity percentage sitting at 63% in January, and the lowest at 23% in June. Rainfall varies throughout the year, with the highest expected rainfall to be 1.38" (35mm) in July, and the lowest a mere 0.08" (2mm) during the month of June. In terms of wind patterns, Williams witnesses wind speeds fluctuating between 5.8mph (9.3km/h) and 9.3mph (15km/h), with the most eminent gusts reaching 13.9mph (22.4km/h). An interesting facet to the climate of Williams is its snowfall pattern - it snows from January to April and in November and December, with the heaviest snowfall, 5.94" (151mm), being in December.
The best time to visit Williams
Considering the varied weather conditions, the best time to visit Williams is between late spring and early summer, specifically from May to June. During these months, the temperatures peak between 70°F (21.1°C) and 82.8°F (28.2°C) offering a comfortable climate for outdoor activities. Another attractive aspect of this period is the low humidity levels, especially in June when it drops to 23%. Accompanied by abundant sunshine, with hours of sunlight amounting to 14 to 14.5 hours a day, the visitor has ample time to explore and enjoy the city.The worst time to visit Williams
On the flip side, the least favorable time to visit Williams would arguably be in January. This month registers the lowest temperatures, dropping down to 27°F (-2.8°C). Furthermore, it receives the highest amount of snow per month, 5.94" (151mm), making it a colder and more challenging season to navigate through the city. The daylight is also limited to a yearly low of 9.8 hours, restricting the time available for outdoor activities.Spring weather in Williams
Spring in Williams presents itself with an array of moderate climatic conditions. During this season, from March to May, temperatures display a rising trend, ascending from 55°F (12.8°C) in March to 70°F (21.1°C) in May. Humidity levels take a deep dive from 46% to 31%. This season sees a gradual decrease in snowfall and a slight increase in rainfall reaching 0.91" (23mm) in May. On average, there is ample daylight, from 12 hours in March which extends up to 14 hours by May.Summer weather in Williams
Summer in Williams is characterized by warmer temperatures and minimal rainfall. From June to August, the temperature oscillates between 82.8°F (28.2°C) and 84.4°F (29.1°C). This period experiences the lowest humidity levels of the year; in June it sits at 23%. Rainfall is meager in June with only 0.08" (2mm), but peaks to 1.38" (35mm) in July. Daily sunlight hours also reach their maximum, making the summer an ideal time to visit Williams.Autumn weather in Williams
Autumn, from September to November, sees a transition from the heat of summer to cooler temperatures. There is a clear downward trend in temperature, with highs plunging from 77.5°F (25.3°C) in September to 54.7°F (12.6°C) in November. Rainfall is relatively low with an average of 0.79" (20mm) in October. Sunshine hours decrease marginally from 12.4 hours in September to 10.3 hours by November.Winter weather in Williams
Winter in Williams is cold with a significant amount of snow. From December to February, the temperatures fall to an average low of 27°F (-2.8°C) in both January and February. This season witnesses the highest snowfall of the year with December receiving 5.94" (151mm). Despite the cold and snowy conditions, there is a considerable amount of sun with daylight hours averaging around 10 hours during these months.Weather in January
January is the coldest month in Williams, Arizona, marking the height of winter. The temperatures can drop as low as 27.9°F (-2.3°C) making it the month with the lowest temperatures. Comparatively, there is more humidity in the air during January when pitted against the approaching months. Weather in January »Weather in February
In February, the weather starts to slowly transition towards spring but maintains a temperature range common to winter months. The average temperature still hovers from 29.1°F (-1.6°C) to 47.3°F (8.5°C). While the temperatures remain low, rainfall is slightly high with an average of 0.98" (25mm). Weather in February »Weather in March
March brings a noticeable shift towards warmer weather compared to the earlier months. The average temperature jumps to 55°F (12.8°C), indicative of a transition to a milder climate. Rainfall increases, with an average of 1.02" (26mm) through the month, while snow becomes less frequent compared to February. Weather in March »Weather in April
April is a transitional month showcasing the shift from spring to early summer in Williams. There is a steep climb in temperature with the mercury rising to an average high of 62.2°F (16.8°C). Relative humidity takes a dip, indicating a drier air condition. Weather in April »Weather in May
May ushers in the early signs of summer with temperatures reaching an average high of 70°F (21.1°C). This month is recognized for its dry conditions with minimal rainfall measured at 0.91" (23mm) on average. Temperature variance decreases significantly as well with mild nights. Weather in May »Weather in June
June in Williams, Arizona marks the beginning of the hot summer season. With the arrival of June, expect temperatures to rise substantially reaching 82.8°F (28.2°C). The amount of daylight reaches its peak, providing ample time for outdoor activities. Weather in June »Weather in July
July is the hottest month in Williams, with temperatures peaking at 84.4°F (29.1°C). The scorching heat is often accompanied by an increase in relative humidity, indicating a muggy climate. While the heat may be intense, rainfall is higher than the preceding months, with around 13 days of precipitation. Weather in July »Weather in August
In August, the weather remains hot, though temperatures begin to slightly fall with an average high of 82.8°F (28.2°C). The humidity level persists, making the atmosphere quite muggy at times. Interestingly, rainfall measures at 1.1" (28mm), higher than in June and July. Weather in August »Weather in September
September is the transitional period from summer to fall in Williams. Average temperatures decline to 77.5°F (25.3°C), marking the commencement of cooler days. September sees a lesser amount of rainfall compared to August, measuring at an average of 0.63" (16mm). Weather in September »Weather in October
In October, the autumn weather is in full swing with a noticeable fall in temperatures down to an average high of 65.3°F (18.5°C). October is also characterized by a decline in humidity, indicating drier air conditions. The cooling trend continues, and the month ends with temperatures substantially lower than they were at the start. Weather in October »Weather in November
November in Williams, Arizona, ushers in the early hints of winter. The temperature begins to dip reaching an average high of 54.7°F (12.6°C). November witnesses a decrease in rainfall, with an average precipitation of 0.75" (19mm). Weather in November »Weather in December
December signifies the onset of winter with temperatures ranging from a low of 27°F (-2.8°C) to a high of 44.4°F (6.9°C). Williams city witnesses a surge in snowfall nearing 5.94" (151mm) on average, enveloping the city in a winter wonderland. Weather in December »Updated: Feb 9, 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 Williams, with an average relative humidity of 63%.
Throughout the year, there are 70.4 rainfall days, and 10" (254mm) of precipitation is accumulated.
Months with snowfall in Williams are January through May, October through December.
In Williams, Arizona, during the entire year, snow falls for 28.2 days and aggregates up to 24.72" (628mm) of snow.
The months with the lowest UV index in Williams, Arizona, are January, February, November and December, with an average maximum UV index of 2.
The least humid month is June, with an average relative humidity of 23%.
June is the month with the least rainfall in Williams. Rain falls for 2.1 days and accumulates 0.08" (2mm) of precipitation.
In Williams, Arizona, snow does not fall in June through September.
June has the longest days of the year, with an average of 14h and 30min of daylight.
The month with the most sunshine is June, with an average of 12.2h of sunshine.
The months with the highest UV index in Williams are June through August, with an average maximum UV index of 6.
In Williams, July is the month with the highest recorded average temperatures, measuring a high of 84.4°F (29.1°C) and a low of 61.9°F (16.6°C).
July is the month with the most rainfall in Williams, Arizona. Rain falls for 13.3 days and accumulates 1.38" (35mm) of precipitation.
The coldest time of the year in Williams is December, with temperatures averaging a high of 44.4°F (6.9°C) and a low of 27°F (-2.8°C).
December is the month with the most snowfall. Snow falls for 6.2 days and accumulates 5.94" (151mm) of snow.
With an average of 9h and 48min of daylight, December has the shortest days of the year in Williams, Arizona.
Williams does not observe Daylight Saving Time (DST). MST timezone is used throughout the entire year.
December has the least sunshine of the year, with an average of 6.8h of sunshine.
Average temperature
Williams, AZ
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (44.4°F).
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure
Williams, AZ
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.9"Hg - Average pressure in May:
29.87"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Williams, AZ
- Average wind speed in January:
6.7mph - Average wind speed in February:
7.5mph - Average wind speed in March:
8.3mph - Average wind speed in April:
9.3mph - Average wind speed in May:
9.2mph - Average wind speed in June:
8.7mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.3mph - Average wind speed in December:
6.9mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity
Williams, AZ
The month with the highest relative humidity is January (63%).
The month with the lowest relative humidity is June (23%).
Average rainfall
Williams, AZ
- Average rainfall in January:
0.75" - Average rainfall in February:
0.98" - Average rainfall in March:
1.02" - Average rainfall in April:
0.67" - Average rainfall in May:
0.91" - Average rainfall in June:
0.08"
- Average rainfall in July:
1.38" - Average rainfall in August:
1.1" - Average rainfall in September:
0.63" - Average rainfall in October:
0.79" - Average rainfall in November:
0.75" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is July (1.38").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Williams, AZ
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
2.7 days - Average rainfall days in March:
5.3 days - Average rainfall days in April:
5.7 days - Average rainfall days in May:
5.9 days - Average rainfall days in June:
2.1 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
7.1 days - Average rainfall days in October:
5 days - Average rainfall days in November:
2.9 days - Average rainfall days in December:
4.3 days
The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is June (2.1 days).
Average snowfall
Williams, AZ
- Average snowfall in January:
4.02" - Average snowfall in February:
4.25" - Average snowfall in March:
4.13" - Average snowfall in April:
1.73" - Average snowfall in May:
0.83" - Average snowfall in June:
0"
The month with the highest snowfall is December (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Williams, AZ
- Average snowfall days in January:
5.5 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.9 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:
0.7 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
6.2 days
The month with the highest number of snowfall days is December (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Williams, AZ
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 54min - Average sunshine in February:
8h and 48min - Average sunshine in March:
9h and 12min - Average sunshine in April:
10h and 48min - Average sunshine in May:
11h and 48min - Average sunshine in June:
12h and 12min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 6min - Average sunshine in September:
9h and 48min - Average sunshine in October:
8h and 6min - Average sunshine in November:
7h and 18min - Average sunshine in December:
6h and 48min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days
Williams, AZ
- Average sunshine days in January:
23.5 days - Average sunshine days in February:
20.3 days - Average sunshine days in March:
22.3 days - Average sunshine days in April:
22.8 days - Average sunshine days in May:
23.5 days - Average sunshine days in June:
26.9 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
18.8 days - Average sunshine days in October:
22.8 days - Average sunshine days in November:
25 days - Average sunshine days in December:
22.5 days
The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is August (13.1 days).
Average UV index
Williams, AZ
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Williams, AZ
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility
Williams, AZ
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
