Pullman, WA Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Pullman's primary NOAA station, PULLMAN 2 NW.
The climate verdict for Pullman
Pullman, Washington has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 48°F. Its climate comfort score of 59/100 (moderate) lands mid-pack nationally, exceeding 37% of station-mapped location scores.
- 48°F
- yearly average temperature, NOAA normal
- 59/100
- comfort score, above 37% of station-mapped location scores
- 20.4"
- annual precipitation · 33" snow
- 146 days
- growing season, frost-free days
Pullman: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00456789 · Pullman, WA 48°F mean · 20.4" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 48°F
- RANK-COOL #2,196
- PHOTO-FINISH ≈ Rockville
- PRCP-DRY 20.4"
- SWING-MID 37°F
- COMF-MID 59/100
- LOAD-HEAT 6,418 HDD
- STN-1 USC00456789
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Rockville, OR (+ 0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every WA station list.
- Pullman (this station) 48°F
- Cold Goldendale, WA 48°F
- Hot Rockville, OR 48°F
- Near Rupert, WV 48°F
- Near Mill Gap, VA 48°F
Climate Living Index · Pullman
Pullman: 41/100 · grade D
Pullman publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Pullman, not an official NOAA rating. Rankings still use Comfort Score 59/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 134 calendar days | 56/100 · C |
| Precipitation balance | 20.4 in · 14.6 from 35 in | 49/100 · D |
| Snowfall burden | 32.7 inches/year | 36/100 · F |
| Annual temperature balance | 48.2°F · 19.3° from 67.5°F | 32/100 · F |
| Frost-free season | 146 days/year | 22/100 · F |
Pullman · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Pullman is a continental Köppen climate: Dsb
Coldest-month mean 31.0°F and warmest-month mean 67.7°F place this station in continental, dry-summer, warm summer climates (Dsb). Class Dsb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, dry-summer, warm summer.
- Köppen code
- Dsb
- Group
- Continental
- Warmest month
- 67.7°F
- Coldest month
- 31.0°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Pullman sits across the climate record
Three NOAA fields for Pullman's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 32nd percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 72%
- Pullman's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 78%
- Warmest-to-coldest month gap for Pullman is compact versus 6,861 complete station-years.
How Pullman compares across U.S. station-mapped locations
Pullman's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
59 37th percentile score exceeds 37% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). This entry sits in this band.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Pullman's measured station temperature trend
MethodologyAcross 106 complete annual observations from 1893 to 2025, PULLMAN 2 NW warmed at a fitted rate of 0.14°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Pullman primary station fitted change +0.14 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 38°F (3°C) | 26°F (-4°C) | 32°F (0°C) | 2.7" | 9.6" | 23.5 | 0.0 |
| February | 42°F (6°C) | 27°F (-3°C) | 35°F (1°C) | 1.9" | 4.8" | 20.9 | 0.0 |
| March | 50°F (10°C) | 31°F (0°C) | 40°F (5°C) | 2.0" | 2.5" | 17.6 | 0.0 |
| April | 57°F (14°C) | 35°F (2°C) | 46°F (8°C) | 2.0" | 0.7" | 9.8 | 0.0 |
| May | 66°F (19°C) | 42°F (5°C) | 54°F (12°C) | 1.8" | 0.1" | 2.6 | 0.4 |
| June | 73°F (23°C) | 46°F (8°C) | 60°F (15°C) | 1.2" | 0.0" | 0.0 | 1.2 |
| July | 84°F (29°C) | 50°F (10°C) | 67°F (20°C) | 0.4" | 0.0" | 0.0 | 8.1 |
| August | 85°F (30°C) | 50°F (10°C) | 68°F (20°C) | 0.5" | 0.0" | 0.0 | 10.0 |
| September | 76°F (24°C) | 44°F (7°C) | 60°F (16°C) | 0.7" | 0.0" | 1.2 | 2.2 |
| October | 61°F (16°C) | 36°F (2°C) | 49°F (9°C) | 1.8" | 0.1" | 8.9 | 0.1 |
| November | 46°F (8°C) | 31°F (-1°C) | 38°F (3°C) | 2.6" | 4.6" | 16.9 | 0.0 |
| December | 37°F (3°C) | 25°F (-4°C) | 31°F (-1°C) | 2.8" | 10.3" | 25.6 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 88°F around July 31, short of 90°F on every date, while 134 dates carry a normal low at or below freezing, the coldest 24°F near December 24.
The freezing stretch
The normal low stays at or below 32°F into March 20, then returns to freezing around November 8, covering 134 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is January 3, when 46% of years recorded at least a hundredth of an inch. The driest is August 4 at 11%. Summed across the calendar, that is about 115 wet dates a year.
The widest day
August 2 carries the biggest normal gap between afternoon and dawn, 36°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Pullman.
Where Pullman Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 36°F, sharper than nine in ten ranked stations see.
Pullman earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 9.6"
14.0 days with precipitation
Snow: 4.8"
11.5 days with precipitation
Snow: 2.5"
12.3 days with precipitation
Snow: 0.7"
11.1 days with precipitation
Snow: 0.1"
9.6 days with precipitation
8.3 days with precipitation
3.8 days with precipitation
3.5 days with precipitation
4.6 days with precipitation
Snow: 0.1"
9.0 days with precipitation
Snow: 4.6"
13.6 days with precipitation
Snow: 10.3"
13.9 days with precipitation
Pullman's wet season runs through the cold months
December, January and February carry 36% of the year's precipitation here, while June through August contribute 10%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows a 36.7°F seasonal spread.
- Wettest month
- December, 2.8"
- Driest month
- July, 0.4"
- Wettest three months
- December, January, November (39% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
Pullman is dry, and what does fall arrives gently
Only about 115 days a year record measurable precipitation here, 32% of the calendar, and they carry 20.4" between them. At roughly 0.18 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is January at about 14 wet days; the driest is August at about 4.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Winter brings real snow to Pullman
Pullman averages 32.7 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 18 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 32.7 inches of depth.
- Days recording measurable snow: about 18 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 16% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
September 29
50% probability date
Last Spring Freeze
May 6
50% probability date
Growing Season
146 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,418
Higher = more heating needed
Cooling Degree Days
331
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WA closest to Pullman on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (48°F here).
- Belle Plaine, IA 48°F · 0.0°F off
- Broadus, MT 48°F · 0.0°F off
- Compton, IL 48°F · 0.0°F off
- Copake, NY 48°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (20.4" here), excluding temperature-peer places.
- Monterey, CA 20.4" · 0.0" off
- Sterling City, TX 20.4" · 0.0" off
- Zapata, TX 20.4" · 0.0" off
- Colby, KS 20.4" · 0.0" off
Snow and freeze rhythm
When cold and snow define Pullman
heating led · moderate · mid swing
Pullman's energy balance leans toward cold weather: 6,418 annual heating degree days against 331 for cooling. Its 36.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 146 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
-
1. Pullman coldest normal
December
The monthly mean of 31°F (-1°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Pullman typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Pullman snow peak
December
Pullman averages 32.7 inches of snow a year, with December the snowiest month on the normals.
Questions about Pullman's climate
How much snow does Pullman get? ▼
How cold does Pullman get in winter? ▼
How much energy does heating and cooling require in Pullman? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Pullman's primary station: PULLMAN 2 NW (USC00456789). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 5356625). Match rule for Pullman: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Pullman comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.