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Contents
- The climate of Pullman
- The best time to visit Pullman
- The worst time to visit Pullman
- Spring weather in Pullman
- Summer weather in Pullman
- Autumn weather in Pullman
- Winter weather in Pullman
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Pullman
Pullman, Washington, nestled within the verdant expanse of the Pacific Northwest in the United States, is subject to a Mediterranean climate with warm summers, bearing the Köppen climate classification of ‘Csb’. The uniqueness of its climate rises from the harmonious blend of distinct weather patterns influencing the area. Distinct seasonal variations occur in weather parameters including temperature, rainfall, humidity, and daylight hours.
High temperatures fluctuate dramatically from 34.3°F (1.3°C) in December to a peak of 83.7°F (28.7°C) in August, exhibiting the stark contrast of cool winters to warm, pleasant summers. No less important, the low-temperature regime reveals its coldest spell in December with 24.1°F (-4.4°C) and reaches the warmest lows of 58.6°F (14.8°C) in August. The humidity levels show a similar pattern, with the highest relative humidity of 86% in January dropping to a low of 39% in August.
Rainfall trends reveal considerable variation from 2.2" (56mm) in January, falling to a minimal 0.47" (12mm) during the months of July and August. In terms of snowfall, wintry weather prevails from December to February with significant amounts of snowfall reaching up to 10.04" (255mm) in February. The winter months also offer the shortest daylight hours with 8.6 hours in December, extending to a charming 15.8 hours of daylight in June.
In Pullman, unique weather patterns are felt in the drying effects of summer where the city experiences its lowest quantities of rainfall and humidity. Simultaneously, the long daylight hours and plentiful sunshine encourage visitors to explore the delightful local scenery.
High temperatures fluctuate dramatically from 34.3°F (1.3°C) in December to a peak of 83.7°F (28.7°C) in August, exhibiting the stark contrast of cool winters to warm, pleasant summers. No less important, the low-temperature regime reveals its coldest spell in December with 24.1°F (-4.4°C) and reaches the warmest lows of 58.6°F (14.8°C) in August. The humidity levels show a similar pattern, with the highest relative humidity of 86% in January dropping to a low of 39% in August.
Rainfall trends reveal considerable variation from 2.2" (56mm) in January, falling to a minimal 0.47" (12mm) during the months of July and August. In terms of snowfall, wintry weather prevails from December to February with significant amounts of snowfall reaching up to 10.04" (255mm) in February. The winter months also offer the shortest daylight hours with 8.6 hours in December, extending to a charming 15.8 hours of daylight in June.
In Pullman, unique weather patterns are felt in the drying effects of summer where the city experiences its lowest quantities of rainfall and humidity. Simultaneously, the long daylight hours and plentiful sunshine encourage visitors to explore the delightful local scenery.
The best time to visit Pullman
For visitors keen on taking in the beauties of Pullman, the summer months, between June and August, offer the most appealing conditions. During this period, the area witnesses its longest daylight hours, increasing from 15.1 hours in May to 15.8 hours in June. Also noteworthy are the low rainfall of 0.47" (12mm), excellent visibility of 6 miles, and a pleasant average high temperature hovering around 80°F (26.7°C). The mild and warm climate, enhanced by low humidity, provides an idyllic environment for exploring the leafy city streets and surrounding natural beauty.
The worst time to visit Pullman
Those with a disposition towards cold, snowy weather might find the winter months, specifically December to February, challenging in Pullman. During these months, the temperature drops significantly, with high temperatures staying around 35.8°F (2.1°C) and in December and plummeting to lows of 24.1°F (-4.4°C). At the same time, snowfall increases, reaching a peak of 10.04" (255mm) in February. Furthermore, the shorter daylight hours, spanning 8.6 to 9.1 hours, and reduced visibility of 5 miles, constrain outdoor activities and sightseeing.
Spring weather in Pullman
Spring in Pullman, encompassing March to May, brings a gradual transition in weather conditions. The high temperatures steadily rise from 46.8°F (8.2°C) to 63.9°F (17.7°C), while lows warm up from 32°F (0°C) to 41.7°F (5.4°C). The rainfall prolongs through spring, mildly lowering from 2.09" (53mm) to 1.57" (40mm). The spring season also welcomes increasing daylight hours, lengthening from 12 hours in March to 15.1 hours by May. Contributing to the spring allure, sunshine hours significantly increase, brightening 6.7 hours in March to a longer 10.4 hours in May.
Summer weather in Pullman
Summers are pleasantly warm in Pullman, extending from June to August. High temperatures average between 70.2°F (21.2°C) and 83.7°F (28.7°C), making it the warmest part of the year. However, the nights remain cooler, with temperatures dropping between 46.9°F (8.3°C) and 58.6°F (14.8°C). Rainfall sees a noticeable decline during summer, registering the least precipitation with an average of 0.47" (12mm) in both July and August.
Autumn weather in Pullman
Autumn, extending from September to November, signals a return to milder conditions in Pullman. The decline in temperature is perceptible, as averages fall from 73.4°F (23°C) in September to 43.7°F (6.5°C) in November. Nights cool down in a similar trend, with temperatures decreasing from 51.8°F (11°C) to 32.4°F (0.2°C) across the season. Meanwhile, rainfall moderately elevates, moving from 0.59" (15mm) to 1.69" (43mm).
Winter weather in Pullman
Winter weather is predominantly cold in Pullman, with the period from December to February marked by significant temperature decline. High temperatures range from 34.3°F (1.3°C) to 38.8°F (3.8°C), while lows vary from 24.1°F (-4.4°C) to 27.9°F (-2.3°C). This season also brings the highest snowfall, peaking at 10.04" (255mm) in February, accompanied by shorter daylight hours, which lessen to 8.6 hours in December. Nevertheless, winter is a time of unique charm, revealing the city's frosty beauty under a blanket of snow.
Weather in January
The biting winter remains in January in Pullman, Washington, harboring chilly conditions with high levels of humidity. Snowfall is a common spectacle to bear witness, transforming the city into a winter wonderland. Slight changes occur in the atmospheric conditions compared to December, though it is commonly a calm period regarding wind speeds. Weather in January »
Weather in February
As Pullman enters its second calendar month, a small rise in temperature occurs. Although winter prevails, weather patterns diverge slightly, lessening the snowfall and increasing the chances of rain. Wind speeds generally remain the same though daylight hours extend. Weather in February »
Weather in March
March signals the onset of change, steering away from the harsh winter months to show the beginnings of spring. The rise in temperatures generally melts the snow, evident by a reduction in snowfall days. A shift in atmospheric conditions often results in rainy days, replacing the common flurries. Weather in March »
Weather in April
April sees a warming trend in Pullman, bearing witness to the full glory of spring. Snowfall stops completely, making way for more rain showers and overcast conditions. Overall, April guarantees warmer days, with rare instances of strong winds. Weather in April »
Weather in May
The month of May brings about an optimistic forecast, leaning into the more balmy days of the year. Prevailing weather conditions lean towards a mix of sun and rain, experiencing higher temperatures. Wind is generally mild, allowing for pleasant days with ample sunlight in Pullman. Weather in May »
Weather in June
Summer starts its course in June, mirroring a marked increase in temperature for Pullman. The city enjoys sun-soaked days, complemented by mild nighttime temperatures. Despite the advent of summer, Pullman observes a lower cloud cover and less rainfall. Weather in June »
Weather in July
July marks the peak of summer in Pullman, typified by high temperatures and prolonged daylight hours. A reduced cloud cover hints at clear skies, more often than not. Occasional winds sweep through the city bringing momentary respite from the heat. Weather in July »
Weather in August
The dog days of summer extend into August, furnishing Pullman with slightly cooler temperatures as compared to July. The city languishes in long daylight hours, dressed mostly in sunlight. It is an opportune time for outdoor activities primarily during hours of lower UV exposure. Weather in August »
Weather in September
September receives the first hints of fall in Pullman, curbing the summer extremes. It subtly introduces a comfortable temperature range, a pleasant drift from the summer heat. Rainfall shows a positive trend, though snowfall remains non-existent. Weather in September »
Weather in October
The full arrival of fall is evident in October, bringing a noticeable downturn in temperature. Weather swings between sunny days, rainy spells, and increasingly frequent overcast conditions. A crisp atmosphere is sustained by the winds, gradually picking up speed. Weather in October »
Weather in November
November witnesses the distinctive turn towards winter in Pullman. The once sunny days of summer are replaced by shorter daylight hours and an amplified cloud cover. A drop in temperature initiates the onset of the cold season with a gradual increase in snowfall. Weather in November »
Weather in December
The biting winter takes center stage in December, Pullman's coldest month. Snowfalls become a common phenomenon, contributing to high humidity levels. The year ends on shorter hours of sunlight, calling for long, dark nights. Winds retain the same speed as that in November, while rainfall takes a backseat. Weather in December »
Updated: Feb 14, 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
What is the most humid month in Pullman?
January is the most humid month, with an average relative humidity of 86%.
What is the wettest month in Pullman?
January is the month with the most rainfall in Pullman, Washington. Rain falls for 9.9 days and accumulates 2.2" (56mm) of precipitation.
How much does it rain in Pullman?
In Pullman, during the entire year, the rain falls for 131 days and collects up to 18.15" (461mm) of precipitation.
When does it snow in Pullman?
Months with snowfall are January through May, September through December.
How much does it snow in Pullman?
Throughout the year, in Pullman, there are 53.7 snowfall days, and 37.44" (951mm) of snow is accumulated.
What is the month with the least sunshine in Pullman?
The months with the least sunshine in Pullman, Washington, are January, February and December, with an average of 4.7h of sunshine.
What is the month with the lowest UV index in Pullman?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the snowiest month in Pullman?
The month with the most snowfall in Pullman, Washington, is February, when snow falls for 12.2 days and typically aggregates up to 10.04" (255mm) of snow.
When is Daylight Saving Time (DST) in Pullman?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow in Pullman?
In Pullman, snow does not fall in June through August.
When are the longest days in Pullman?
June has the longest days of the year, with an average of 15h and 48min of daylight.
What is the driest month in Pullman?
The months with the least rainfall are July and August Rain falls for 5.8 days and accumulates 0.47" (12mm) of rain.
When is the highest UV index in Pullman?
With an average maximum UV index of 7, July is the month with the highest UV index in Pullman.
What time of the year is the hottest in Pullman?
In Pullman, Washington, temperatures reach their average annual highs in August, measuring 83.7°F (28.7°C) and a minimum average of 58.6°F (14.8°C).
What is the least humid month in Pullman?
With an average relative humidity of 39%, August is the least humid month.
What month has the most sunshine in Pullman?
With an average of 12.1h of sunshine, August has the most sunshine of the year in Pullman, Washington.
What are the coldest months in Pullman?
December, recording an average high temperature of 34.3°F (1.3°C) and a low temperature of 24.1°F (-4.4°C), is Pullman's coldest month.
What is the month with the shortest days in Pullman?
The month with the shortest days in Pullman, Washington, is December, with an average of 8h and 36min of daylight.
Average temperature
Pullman, WA
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (34.3°F).
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure
Pullman, WA
- Average pressure in January:
30.2"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.17"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed
Pullman, WA
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.7mph - Average wind speed in April:
6.7mph - Average wind speed in May:
5.4mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5mph - Average wind speed in September:
5.1mph - Average wind speed in October:
5.7mph - Average wind speed in November:
6.2mph - Average wind speed in December:
6mph
The windiest months (with the highest average wind speed) are March and April (6.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Pullman, WA
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (39%).
Average rainfall
Pullman, WA
- Average rainfall in January:
2.2" - Average rainfall in February:
1.93" - Average rainfall in March:
2.09" - Average rainfall in April:
1.57" - Average rainfall in May:
2.09" - Average rainfall in June:
1.42"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.47" - Average rainfall in September:
0.59" - Average rainfall in October:
1.46" - Average rainfall in November:
1.69" - Average rainfall in December:
2.17"
The wettest month (with the highest rainfall) is January (2.2").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days
Pullman, WA
- Average rainfall days in January:
9.9 days - Average rainfall days in February:
10.1 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
11.9 days
- Average rainfall days in July:
5.8 days - Average rainfall days in August:
5.8 days - Average rainfall days in September:
7.3 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
12.7 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is March (15.4 days).
The months with the least rainy days are July and August (5.8 days).
Average snowfall
Pullman, WA
- Average snowfall in January:
9.33" - Average snowfall in February:
10.04" - Average snowfall in March:
5.39" - Average snowfall in April:
1.5" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is February (10.04").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Pullman, WA
- Average snowfall days in January:
12.1 days - Average snowfall days in February:
12.2 days - Average snowfall days in March:
7.1 days - Average snowfall days in April:
3 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:
0.2 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
5.4 days - Average snowfall days in December:
12.9 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Pullman, WA
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 1min - Average daylight in June:
15h and 5min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 4min - Average sunshine in April:
9h and 3min - Average sunshine in May:
10h and 2min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
12h and 1min - Average sunshine in September:
10h and 2min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 42min).
Average sunshine days
Pullman, WA
- Average sunshine days in January:
13.3 days - Average sunshine days in February:
10.2 days - Average sunshine days in March:
11.1 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
13.4 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
23.4 days - Average sunshine days in August:
21.4 days - Average sunshine days in September:
20.5 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
12.8 days - Average sunshine days in December:
13.6 days
The month with the most sunshine days is July (23.4 days).
The month with the least sunshine days is February (10.2 days).
Average UV index
Pullman, WA
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Pullman, WA
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility
Pullman, WA
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).
Pullman, Washington, USA
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