Whidbey Island, WA Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Whidbey Island's primary NOAA station, WHIDBEY ISLAND NAS.
The climate verdict for Whidbey Island
Dryness leads the climate profile for Whidbey Island, Washington, with 19.9 inches of precipitation a year. NOAA records an annual average of 52°F. Its climate comfort score of 62/100 (good) lands mid-pack nationally, exceeding 46% of station-mapped location scores.
- 52°F
- average temperature, NOAA 1991-2020 normal
- 62/100
- comfort score, above 46% of station-mapped location scores
- 19.9"
- annual precipitation · 5" snow
- 246 days
- growing season, frost-free days
Whidbey Island: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00024255 · Whidbey Island, WA 52°F mean · 19.9" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-DRY · SWING-NARROW · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 52°F
- RANK-MID #3,431
- PHOTO-FINISH ≈ Crescent City
- PRCP-DRY 19.9"
- SWING-NARROW 19°F
- COMF-MID 62/100
- LOAD-HEAT 4,727 HDD
- STN-1 USW00024255
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Crescent City, CA (+ 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.
- Hot Cloverdale, OR 53°F
- Whidbey Island (this station) 52°F
- Cold Fort Clatsop Na…, OR 52°F
- Near Crescent City, CA 52°F
- Near Yachats, OR 52°F
Climate Living Index · Whidbey Island
Whidbey Island: 71/100 · grade B
Whidbey Island publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Whidbey Island, not an official NOAA rating. Rankings still use Comfort Score 62/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Frost-free season | 246 days/year | 87/100 · A |
| Snowfall burden | 5.4 inches/year | 70/100 · B |
| Annual temperature balance | 52.1°F · 15.4° from 67.5°F | 50/100 · D |
| Precipitation balance | 19.9 in · 15.1 from 35 in | 47/100 · D |
Whidbey Island · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Whidbey Island is a temperate Köppen climate: Csb
Coldest-month mean 43.3°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
- 43.3°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 Whidbey Island sits across the climate record
Three NOAA fields for Whidbey Island's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 50th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 72%
- Whidbey Island's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 97%
- Warmest-to-coldest month gap for Whidbey Island is compact versus 6,861 complete station-years.
How Whidbey Island compares across U.S. station-mapped locations
Whidbey Island's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
62 46th percentile score exceeds 46% 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%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 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
Whidbey Island's measured station temperature trend
MethodologyAcross 61 complete annual observations from 1948 to 2025, WHIDBEY ISLAND NAS warmed at a fitted rate of 0.12°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Whidbey Island primary station fitted change +0.12 °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 | 49°F (10°C) | 38°F (3°C) | 44°F (7°C) | 2.4" | 1.1" | 9.4 | 0.0 |
| February | 51°F (11°C) | 37°F (3°C) | 44°F (7°C) | 1.6" | 1.0" | 9.5 | 0.0 |
| March | 55°F (13°C) | 40°F (5°C) | 47°F (8°C) | 1.7" | 0.6" | 4.6 | 0.0 |
| April | 58°F (15°C) | 43°F (6°C) | 51°F (11°C) | 1.7" | 0.0" | 0.9 | 0.0 |
| May | 62°F (17°C) | 48°F (9°C) | 55°F (13°C) | 1.7" | 0.0" | 0.0 | 0.0 |
| June | 66°F (19°C) | 52°F (11°C) | 59°F (15°C) | 1.1" | 0.0" | 0.0 | 0.0 |
| July | 69°F (21°C) | 54°F (12°C) | 62°F (16°C) | 0.6" | 0.0" | 0.0 | 0.0 |
| August | 70°F (21°C) | 54°F (12°C) | 62°F (17°C) | 0.8" | 0.0" | 0.0 | 0.0 |
| September | 67°F (19°C) | 50°F (10°C) | 59°F (15°C) | 1.1" | 0.0" | 0.0 | 0.0 |
| October | 60°F (16°C) | 46°F (8°C) | 53°F (12°C) | 2.0" | 0.0" | 1.0 | 0.0 |
| November | 54°F (12°C) | 41°F (5°C) | 47°F (8°C) | 3.1" | 0.3" | 4.9 | 0.0 |
| December | 49°F (9°C) | 38°F (3°C) | 43°F (6°C) | 1.9" | 2.4" | 9.4 | 0.0 |
The year, day by day
The calendar barely moves in Whidbey Island: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 37°F near February 13 and 70°F near August 5.
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 37°F around February 13.
Where the wet dates fall
The likeliest wet date is November 18, when 56% of years recorded at least a hundredth of an inch. The driest is July 30 at 15%. Summed across the calendar, that is about 148 wet dates a year.
The widest day
September 6 carries the biggest normal gap between afternoon and dawn, 17°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Whidbey Island.
Where Whidbey Island Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 17°F.
Whidbey Island 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: 1.1"
16.3 days with precipitation
Snow: 1.0"
14.3 days with precipitation
Snow: 0.6"
15.5 days with precipitation
13.1 days with precipitation
11.7 days with precipitation
8.9 days with precipitation
5.3 days with precipitation
5.6 days with precipitation
9.5 days with precipitation
14.5 days with precipitation
Snow: 0.3"
17.1 days with precipitation
Snow: 2.4"
16.5 days with precipitation
Whidbey Island spreads its precipitation across the year
Neither half of the year dominates here: June through August take 13% of the annual total and December through February 30%, with neither reaching the 35% that would mark a distinct wet season. Whidbey Island has no dry season to plan around, though it does carry an unusually narrow 18.5°F seasonal spread.
The gap between the wettest and driest month still matters: November averages 3.1" and July 0.6". The three wettest months together take 38% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Rain reaches Whidbey Island in small, frequent amounts
Whidbey Island records about 148 days with measurable precipitation a year and 19.9" in total, which works out to roughly 0.13 inches on an average wet day. Precipitation on 41% of all days, arriving that lightly, is the damp many-grey-days pattern rather than the storm-driven one.
Places in this band read as wetter than their annual totals suggest, because what people notice is the number of overcast days, not the depth in the gauge.
- Most wet days: November, about 17 of them.
- Fewest: July, about 5.
- Average depth per wet day: 0.13 inches.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Snow reaches Whidbey Island, but rarely amounts to much
The normals record 5.4 inches of snow a year here, most likely in December. 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 3 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 14
50% probability date
Last Spring Freeze
March 13
50% probability date
Growing Season
246 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,727
Higher = more heating needed
Cooling Degree Days
25
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WA closest to Whidbey Island 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 (52°F here).
- Canon City, CO 52°F · 0.0°F off
- Donora, PA 52°F · 0.0°F off
- Dyer, NV 52°F · 0.0°F off
- Flemington, NJ 52°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (19.9" here), excluding temperature-peer places.
- Whitefish, MT 19.9" · 0.0" off
- Lakeview, MT 19.9" · 0.0" off
- Porcupine, SD 19.9" · 0.0" off
- Nezperce, ID 20.0" · 0.0" off
Data-derived climate profile
How Whidbey Island's climate pattern fits together
heating led · dry · low swing
Heating is the larger measured load in Whidbey Island, at 4,727 degree days versus 25 for cooling. Unlike a strongly continental record, however, its 18.5°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Whidbey Island has a long frost-free window of roughly 246 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
The calendar stays thermally compact and dry. August and December mark the typical warm and cold ends of the calendar, only 18.5°F apart, while the annual precipitation total remains below PlainClimate's dry threshold. The annual average is 52°F. The monthly rows show whether that limited precipitation is spread through the year or concentrated in a shorter interval.
Whidbey Island's cold-season load does not imply a wet climate. Annual precipitation is 19.9 inches, which places the station in PlainClimate's dry range. Annual snowfall totals 5.4 inches. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
These labels group NOAA 1991-2020 normals from Whidbey Island'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 Whidbey Island, not an official NOAA class or a year-ahead forecast.
Questions about Whidbey Island's climate
How much rain does Whidbey Island get? ▼
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Whidbey Island's primary station: WHIDBEY ISLAND NAS (USW00024255). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Whidbey Island; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Whidbey Island 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.