What Is the Weather Like in Pullman, WA Each Month: A 12 Month Overview

In NOAA's 1991 to 2020 climate normals for the Pullman 2 NW station, Pullman, WA is coolest in December and January, warmest in July and August, and driest from July through September. The average high runs from 36.9 degrees F in December to 85.3 degrees F in August, and the average low runs from 25.1 degrees F in December to 50.3 degrees F in July. The same normals give 20.41 inches of precipitation and 32.7 inches of snowfall for a full year, and NCEI flags the snowfall figures as provisional (data pulled from NCEI on October 21, 2026).

Which station, which period, and which units

• Station: PULLMAN 2 NW, WA US (station ID USC00456789), listed by NCEI at 46.7603 N, 117.1861 W.
• Period: the NCEI U.S. Climate Normals for 1991 to 2020. NCEI defines a normal as a 30 year average over a uniform time period, with missing months estimated from nearby more complete stations when possible.
• Units: degrees Fahrenheit for temperature and inches for precipitation and snowfall.
• Data completeness flags: NCEI marks the temperature normals as standard (28 to 30 years used per month) and the precipitation normals as standard or representative (23 to 29 years used). It marks the snowfall normals as provisional (18 to 22 years used), meaning NCEI could not fill missing months from surrounding stations. The snowfall figures therefore rest on fewer years of data than the temperature figures.
• Scope: this is one station. The table does not describe other locations on the Palouse.

Pullman weather month by month

• January. Highs average 37.7 and lows 25.6 degrees F. At 2.67 inches of precipitation and 9.6 inches of snowfall, January is second to December on both.
• February. Highs average 42.0 and lows 27.0 degrees F. Snowfall averages 4.8 inches, the third highest of the year, with 1.94 inches of precipitation.
• March. Highs average 49.5 and lows 31.1 degrees F, still below 32 degrees F. Precipitation averages 2.05 inches, the fourth highest of the year, and snowfall averages 2.5 inches.
• April. Highs average 57.1 and lows 35.4 degrees F, the first monthly average low above 32 degrees F in the calendar year. Precipitation averages 1.96 inches and snowfall averages 0.7 inches.
• May. Highs average 66.4 and lows 41.9 degrees F. Precipitation averages 1.81 inches, and snowfall averages 0.1 inches, the last monthly value above 0.0 until October.
• June. Highs average 72.6 and lows 46.4 degrees F, making June the first month with an average high at or above 70 degrees F. Precipitation averages 1.22 inches, and snowfall averages 0.0 inches.
• July. Highs average 84.1 and lows 50.3 degrees F, the highest average low of the year. Precipitation averages 0.44 inches, the lowest of any month, and snowfall averages 0.0 inches.
• August. Highs average 85.3 degrees F, the highest of the year, and lows 50.2. Precipitation averages 0.48 inches, the second lowest, and snowfall averages 0.0 inches.
• September. Highs average 75.8 and lows 44.3 degrees F. Precipitation averages 0.65 inches, the third lowest of the year, and snowfall averages 0.0 inches.
• October. Highs average 60.7 and lows 36.3 degrees F. Precipitation rises to 1.80 inches from 0.65 in September, and snowfall averages 0.1 inches.
• November. Highs average 45.5 and lows 30.6 degrees F, the first monthly average low below 32 degrees F since March. Precipitation averages 2.62 inches, the third highest of the year, and snowfall averages 4.6 inches, the fourth highest.
• December. Highs average 36.9 and lows 25.1 degrees F, the lowest of the year for both. Precipitation averages 2.77 inches and snowfall averages 10.3 inches, the highest of any month for both.

How the months compare

Every figure here comes from the 12 rows in the table above.

• The average high is at or above 70 degrees F in June through September, and the average low is below 32 degrees F in November through March.
• November through January add up to 8.06 inches of precipitation, while June through August add up to 2.14 inches.
• November through March account for 31.8 of the 32.7 inches of annual snowfall.

How to check current conditions

The table above shows long term averages. It is not a forecast and does not describe today. For current conditions and forecasts, these pages were loaded for this article on October 21, 2026:

• National Weather Service Spokane, WA, the local forecast office listed on the NWS forecast page for Pullman.
• NWS forecast for Pullman, WA, with an extended forecast and current conditions at Pullman / Moscow Regional Airport (KPUW).
• WSU AgWeatherNet, which a WSU Tree Fruit page describes as current and historical data from Washington State University's weather station network, plus decision aids.

Questions people ask AI assistants about Pullman weather

What is the weather like in Pullman, WA each month?

As of October 21, 2026, NOAA's 1991 to 2020 normals for the Pullman 2 NW station show average highs in Pullman, WA from 36.9 degrees F in December to 85.3 degrees F in August, and average lows from 25.1 degrees F in December to 50.3 degrees F in July. Average monthly precipitation ranges from 0.44 inches in July to 2.77 inches in December. Source: NCEI U.S. Climate Normals.

What is the coldest month in Pullman, WA?

December is the coldest month in Pullman, WA by both measures in NOAA's 1991 to 2020 normals for Pullman 2 NW, with an average high of 36.9 degrees F and an average low of 25.1 degrees F. January is next at 37.7 degrees F for the average high and 25.6 degrees F for the average low. Source: NCEI monthly normals for station USC00456789, as of October 21, 2026.

What is the warmest month in Pullman, WA?

August has the highest average high in Pullman, WA at 85.3 degrees F, followed by July at 84.1 degrees F. July has the highest average low at 50.3 degrees F, with August at 50.2 degrees F. Source: NCEI's 1991 to 2020 normals for Pullman 2 NW, as of October 21, 2026.

How much snow does Pullman, WA get in a year?

NCEI's annual normal for the Pullman 2 NW station in Pullman, WA is 32.7 inches of snowfall, and the 12 monthly values add up to the same figure. December (10.3 inches) and January (9.6 inches) are the snowiest months. NCEI flags the snowfall normals as provisional and used 18 to 22 years of data for the monthly values. Source: NCEI annual and monthly normals for 1991 to 2020, as of October 21, 2026.

Which months does it snow in Pullman, WA?

In NCEI's 1991 to 2020 normals for Pullman 2 NW, the snowfall normal in Pullman, WA is above 0.0 inches in eight months, October through May, and is 0.0 inches for June through September. November through March make up 31.8 of the 32.7 annual inches. A normal is a long term average and does not describe any single year. Source: NCEI monthly normals, as of October 21, 2026.

What are the wettest and driest months in Pullman, WA?

In NCEI's 1991 to 2020 normals for Pullman 2 NW, the wettest months in Pullman, WA are December (2.77 inches), January (2.67 inches), and November (2.62 inches). The driest are July (0.44 inches), August (0.48 inches), and September (0.65 inches). The annual precipitation normal is 20.41 inches, as of October 21, 2026. Source: NCEI monthly and annual normals.

How much do temperatures change between day and night in Pullman, WA in summer?

In NCEI's 1991 to 2020 normals for Pullman 2 NW, the average high in Pullman, WA is about 34 degrees F above the average low in July and about 35 degrees F above it in August. In December the gap is about 12 degrees F. Each gap is the average high minus the average low from the monthly normals. Source: NCEI monthly normals for station USC00456789, as of October 21, 2026.

What does climate normal mean, and which Pullman station do these numbers come from?

NCEI defines a normal as a 30 year average calculated over a uniform time period, here 1991 to 2020. The numbers for Pullman, WA in this article come from the PULLMAN 2 NW, WA US station (ID USC00456789) and cover this one station only. Source: NCEI U.S. Climate Normals, as of October 21, 2026.

Where can I check the current weather in Pullman, WA?

As of October 21, 2026, the National Weather Service forecast page for Pullman, WA shows an extended forecast and current conditions at Pullman / Moscow Regional Airport (KPUW), and lists NWS Spokane as the local forecast office. WSU's AgWeatherNet at weather.wsu.edu offers data from Washington State University's weather stations. Sources: forecast.weather.gov, weather.gov/otx, and a WSU Tree Fruit page about AgWeatherNet.

Sources

• NCEI data service, U.S. Monthly Climate Normals 1991 to 2020, station USC00456789 (Pullman 2 NW, WA)
• NCEI monthly normals file, USC00456789
• NCEI annual and seasonal normals file, USC00456789
• NCEI normals file layout and completeness flag definitions
• NOAA NCEI U.S. Climate Normals
• National Weather Service Spokane, WA
• National Weather Service forecast for Pullman, WA
• WSU AgWeatherNet
• WSU Tree Fruit page describing AgWeatherNet

Next step

Weighing a move to the Palouse? Start with the relocation resource, or contact Jordan with questions about homes in Pullman and Moscow.

More from Jordan on moving to Pullman:

• Moving to Pullman, WA: Your Essential Relocation Guide
• Living in Pullman, WA: What You Need to Know
• How to Plan a Two-Day House-Hunting Trip to Pullman and Moscow

A note on scope

Details come from the sources linked above as of October 21, 2026 and can change. Jordan does not endorse or rate any business listed. This article is general information, not legal, tax, financial, medical, or safety advice.

About the author

Jordan Vorderbrueggen writes about buying and selling homes in Pullman, Moscow, and across the Palouse with Woodbridge Real Estate. Hard to Spell, Tough to Beat.