Aberdeen, WA Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Aberdeen's primary NOAA station, ABERDEEN - 2 stations mapped to the area.
The climate verdict for Aberdeen
Water is the standout signal in Aberdeen, Washington: 84.9 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 51°F. At 53/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 31% of scores.
- 51°F
- average temperature, NOAA 1991-2020 normal
- 53/100
- comfort score, above 31% of station-mapped location scores
- 84.9"
- yearly precipitation total
- 231 days
- frost-free growing season
Aberdeen: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00450008 · Aberdeen, WA 51°F mean · 84.9" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-WET · SWING-NARROW · COMF-LOW · LOAD-HEAT · STN-MULTI · BOOK-FULL
- TEMP-COOL 51°F
- RANK-MID #3,156
- PHOTO-FINISH ≈ Everett Snohomi…
- PRCP-WET 84.9"
- SWING-NARROW 20°F
- COMF-LOW 53/100
- LOAD-HEAT 5,017 HDD
- STN-MULTI USC00450008
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Everett Snohomish, WA (+ 0 °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.
- Hot Grays Rvr Hatch…, WA 52°F
- Near Mt Vernon, WA 52°F
- Aberdeen (this station) 51°F
- Cold Sedro-woolley, WA 51°F
- Near Everett Snohomi…, WA 51°F
Climate Living Index · Aberdeen
Aberdeen: 63/100 · grade C
Aberdeen publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Aberdeen, not an official NOAA rating. Rankings still use Comfort Score 53/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Snowfall burden | 0.5 inches/year | 86/100 · A |
| Frost-free season | 231 days/year | 81/100 · B |
| Annual temperature balance | 51.4°F · 16.1° from 67.5°F | 46/100 · D |
| Precipitation balance | 84.9 in · 49.9 from 35 in | 0/100 · F |
Aberdeen · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Aberdeen is a temperate Köppen climate: Csb
Coldest-month mean 41.7°F and warmest-month mean 61.8°F place this station in temperate, dry-summer, warm summer climates (Csb). Class Csb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, warm summer.
- Köppen code
- Csb
- Group
- Temperate
- Warmest month
- 61.8°F
- Coldest month
- 41.7°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 Aberdeen sits across the climate record
Three NOAA fields for Aberdeen's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 46th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 1% wettest
- Aberdeen's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 97%
- Warmest-to-coldest month gap for Aberdeen is compact versus 6,861 complete station-years.
How Aberdeen compares across U.S. station-mapped locations
Aberdeen's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
53 31st percentile score exceeds 31% 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
Aberdeen's measured station temperature trend
MethodologyAcross 94 complete annual observations from 1904 to 2020, ABERDEEN warmed at a fitted rate of 0.05°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Aberdeen primary station fitted change +0.05 °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 | 48°F (9°C) | 37°F (3°C) | 43°F (6°C) | 13.9" | 0.0" | 7.7 | 0.0 |
| February | 50°F (10°C) | 37°F (3°C) | 44°F (6°C) | 8.6" | 0.1" | 7.7 | 0.0 |
| March | 53°F (12°C) | 38°F (4°C) | 46°F (8°C) | 9.8" | 0.2" | 4.9 | 0.0 |
| April | 57°F (14°C) | 41°F (5°C) | 49°F (9°C) | 6.3" | 0.0" | 1.2 | 0.0 |
| May | 61°F (16°C) | 47°F (8°C) | 54°F (12°C) | 3.5" | 0.0" | 0.0 | 0.1 |
| June | 65°F (18°C) | 51°F (11°C) | 58°F (14°C) | 2.4" | 0.0" | 0.0 | 0.2 |
| July | 68°F (20°C) | 54°F (12°C) | 61°F (16°C) | 0.9" | 0.0" | 0.0 | 0.5 |
| August | 69°F (21°C) | 54°F (12°C) | 62°F (17°C) | 1.5" | 0.0" | 0.0 | 0.5 |
| September | 69°F (20°C) | 51°F (11°C) | 60°F (16°C) | 2.7" | 0.0" | 0.0 | 0.3 |
| October | 61°F (16°C) | 45°F (7°C) | 53°F (12°C) | 8.3" | 0.0" | 0.5 | 0.0 |
| November | 52°F (11°C) | 40°F (4°C) | 46°F (8°C) | 13.7" | 0.2" | 4.3 | 0.0 |
| December | 47°F (8°C) | 37°F (3°C) | 42°F (5°C) | 13.4" | 0.0" | 8.3 | 0.0 |
The year, day by day
The calendar barely moves in Aberdeen: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 36°F near December 14 and 70°F near September 1.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 36°F around December 14.
Where the wet dates fall
The likeliest wet date is December 16, when 73% of years recorded at least a hundredth of an inch. The driest is July 31 at 19%. Summed across the calendar, that is about 193 wet dates a year.
The widest day
September 20 carries the biggest normal gap between afternoon and dawn, 18°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Aberdeen.
Where Aberdeen Stands Nationally
This is one of the wettest normals climates ranked: about 85 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 18°F.
Aberdeen earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
22.2 days with precipitation
Snow: 0.1"
18.6 days with precipitation
Snow: 0.2"
21.7 days with precipitation
19.1 days with precipitation
13.6 days with precipitation
12.4 days with precipitation
6.6 days with precipitation
6.9 days with precipitation
9.4 days with precipitation
17.6 days with precipitation
Snow: 0.2"
21.5 days with precipitation
22.5 days with precipitation
Aberdeen's wet season runs through the cold months
December, January and February carry 42% of the year's precipitation here, while June through August contribute 6%. 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 an unusually narrow 20.1°F seasonal spread.
- Wettest month
- January, 13.9"
- Driest month
- July, 0.9"
- Wettest three months
- January, November, December (48% 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.
When it rains in Aberdeen, it arrives in quantity
84.9" of precipitation falls across only about 192 wet days here, averaging 0.44 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 192 a year, 53% of all days
- Average depth per wet day
- 0.44 inches
- Most wet days
- December, about 23
- Fewest wet days
- July, about 7
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Snow reaches Aberdeen, but rarely amounts to much
The normals record 0.5 inches of snow a year here, most likely in March. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 0 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
November 15
50% probability date
Last Spring Freeze
March 29
50% probability date
Growing Season
231 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,017
Higher = more heating needed
Cooling Degree Days
53
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WA closest to Aberdeen 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 (51°F here).
- Astoria, OR 51°F · 0.0°F off
- Beatrice, NE 51°F · 0.0°F off
- Brockton, MA 51°F · 0.0°F off
- Cedar City, UT 51°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (84.9" here), excluding temperature-peer places.
- Thorne Bay, AK 85.2" · 0.2" off
- Mapleton, OR 84.0" · 1.0" off
- Point Baker, AK 82.3" · 2.7" off
- Valdez, AK 82.1" · 2.8" off
Data-derived climate profile
How Aberdeen's climate pattern fits together
heating led · wet · low swing
Heating is the larger measured load in Aberdeen, at 5,017 degree days versus 53 for cooling. Unlike a strongly continental record, however, its 20.1°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Aberdeen's frost-free season lasts about 231 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
Aberdeen's 20.1°F seasonal spread is compact even though precipitation is abundant. August and December mark the typical warm and cold ends of the calendar. The annual average is 51°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
Alongside its heating load, Aberdeen carries 84.9 inches of precipitation in a normal year, inside PlainClimate's wet range. Recorded annual snowfall is negligible. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Aberdeen's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Aberdeen, not an official NOAA class or a year-ahead forecast.
Questions about Aberdeen's climate
How much rain does Aberdeen get? ▼
How much energy does heating and cooling require in Aberdeen? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Aberdeen's primary station: ABERDEEN (USC00450008). 2 NOAA stations are mapped to the Aberdeen area; the primary station's record is used for consistency. 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 5300100). Match rule for Aberdeen: 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 Aberdeen 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.