Sequim, WA Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Sequim's primary NOAA station, SEQUIM 2 E.
The climate verdict for Sequim
Dryness leads the climate profile for Sequim, Washington, with 16.9 inches of precipitation a year. NOAA records an annual average of 49°F. Its climate comfort score of 63/100 (good) lands mid-pack nationally, exceeding 46% of station-mapped location scores.
- 49°F
- average temperature, NOAA 1991-2020 normal
- 63/100
- comfort score, above 46% of station-mapped location scores
- 16.9"
- annual precipitation · 1" snow
- 182 days
- frost-free days per growing season
Sequim: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00457544 · Sequim, WA 49°F mean · 16.9" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-NARROW · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 49°F
- RANK-COOL #2,401
- PHOTO-FINISH ≈ Humptulips Salm…
- PRCP-DRY 16.9"
- SWING-NARROW 22°F
- COMF-MID 63/100
- LOAD-HEAT 5,887 HDD
- STN-1 USC00457544
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Humptulips Salmon Hatchery, WA ( -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.
- Sequim (this station) 49°F
- Cold Port Angeles, WA 49°F
- Hot Vernonia, OR 49°F
- Near Humptulips Salm…, WA 49°F
- Near Arlington, WA 49°F
Climate Living Index · Sequim
Sequim: 59/100 · grade C
Sequim publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Sequim, not an official NOAA rating. Rankings still use Comfort Score 63/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 45 calendar days | 92/100 · A |
| Snowfall burden | 1.4 inches/year | 80/100 · B |
| Frost-free season | 182 days/year | 51/100 · D |
| Annual temperature balance | 48.9°F · 18.6° from 67.5°F | 36/100 · F |
| Precipitation balance | 16.9 in · 18.1 from 35 in | 35/100 · F |
Sequim · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Sequim is a temperate Köppen climate: Csb
Coldest-month mean 38.8°F and warmest-month mean 60.8°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
- 60.8°F
- Coldest month
- 38.8°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 Sequim sits across the climate record
Three NOAA fields for Sequim's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 35th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 78%
- Sequim's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 96%
- Warmest-to-coldest month gap for Sequim is compact versus 6,861 complete station-years.
How Sequim compares across U.S. station-mapped locations
Sequim's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
63 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
Sequim's measured station temperature trend
MethodologyAcross 36 complete annual observations from 1981 to 2024, SEQUIM 2 E warmed at a fitted rate of 0.22°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Sequim primary station fitted change +0.22 °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 | 46°F (8°C) | 32°F (0°C) | 39°F (4°C) | 2.2" | 0.0" | 16.5 | 0.0 |
| February | 48°F (9°C) | 32°F (0°C) | 40°F (4°C) | 1.4" | 0.0" | 16.5 | 0.0 |
| March | 51°F (11°C) | 35°F (1°C) | 43°F (6°C) | 1.5" | 0.0" | 12.7 | 0.0 |
| April | 56°F (13°C) | 38°F (3°C) | 47°F (8°C) | 1.2" | 0.0" | 6.1 | 0.0 |
| May | 62°F (16°C) | 44°F (7°C) | 53°F (12°C) | 1.2" | 0.0" | 0.8 | 0.0 |
| June | 65°F (19°C) | 49°F (9°C) | 57°F (14°C) | 0.9" | 0.0" | 0.0 | 0.0 |
| July | 70°F (21°C) | 52°F (11°C) | 61°F (16°C) | 0.5" | 0.0" | 0.0 | 0.1 |
| August | 70°F (21°C) | 51°F (11°C) | 61°F (16°C) | 0.6" | 0.0" | 0.0 | 0.1 |
| September | 66°F (19°C) | 46°F (8°C) | 56°F (13°C) | 0.9" | 0.0" | 0.1 | 0.0 |
| October | 58°F (14°C) | 40°F (4°C) | 49°F (9°C) | 1.6" | 0.0" | 3.8 | 0.0 |
| November | 50°F (10°C) | 35°F (1°C) | 43°F (6°C) | 2.6" | 0.0" | 13.4 | 0.0 |
| December | 46°F (8°C) | 32°F (0°C) | 39°F (4°C) | 2.3" | 1.4" | 18.9 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 71°F around July 31, short of 90°F on every date, while 45 dates carry a normal low at or below freezing, the coldest 32°F near December 12.
The freezing stretch
The normal low stays at or below 32°F into February 18, then returns to freezing around December 5, covering 45 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 November 25, when 56% of years recorded at least a hundredth of an inch. The driest is July 29 at 15%. Summed across the calendar, that is about 142 wet dates a year.
The widest day
September 7 carries the biggest normal gap between afternoon and dawn, 20°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Sequim.
Where Sequim Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 20°F.
Sequim 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
16.2 days with precipitation
13.5 days with precipitation
14.5 days with precipitation
12.4 days with precipitation
10.7 days with precipitation
8.8 days with precipitation
4.8 days with precipitation
5.2 days with precipitation
8.6 days with precipitation
13.2 days with precipitation
16.7 days with precipitation
Snow: 1.4"
16.7 days with precipitation
Sequim spreads its precipitation across the year
Neither half of the year dominates here: June through August take 12% of the annual total and December through February 35%, with neither reaching the 35% that would mark a distinct wet season. Sequim has no dry season to plan around, though it does carry an unusually narrow 22°F seasonal spread.
The gap between the wettest and driest month still matters: November averages 2.6" and July 0.5". The three wettest months together take 42% 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 Sequim in small, frequent amounts
Sequim records about 141 days with measurable precipitation a year and 16.9" in total, which works out to roughly 0.12 inches on an average wet day. Precipitation on 39% 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: 0.12 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 Sequim, but rarely amounts to much
The normals record 1.4 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 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
October 20
50% probability date
Last Spring Freeze
April 21
50% probability date
Growing Season
182 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,887
Higher = more heating needed
Cooling Degree Days
21
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WA closest to Sequim 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 (49°F here).
- Armour, SD 49°F · 0.0°F off
- Basin, WY 49°F · 0.0°F off
- Castle Dale, UT 49°F · 0.0°F off
- El Rito, NM 49°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (16.9" here), excluding temperature-peer places.
- Geraldine, MT 16.9" · 0.0" off
- Rawlins, WY 16.9" · 0.0" off
- Lamesa, TX 16.8" · 0.0" off
- Beulah, ND 16.9" · 0.0" off
Data-derived climate profile
How Sequim's climate pattern fits together
heating led · dry · low swing
Heating is the larger measured load in Sequim, at 5,887 degree days versus 21 for cooling. Unlike a strongly continental record, however, its 22.0°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Sequim's frost-free season lasts about 182 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
The calendar stays thermally compact and dry. July and December mark the typical warm and cold ends of the calendar, only 22.0°F apart, while the annual precipitation total remains below PlainClimate's dry threshold. The annual average is 49°F. The monthly rows show whether that limited precipitation is spread through the year or concentrated in a shorter interval.
Sequim's cold-season load does not imply a wet climate. Annual precipitation is 16.9 inches, which places the station in PlainClimate's dry range. Annual snowfall totals 1.4 inches. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
These labels group NOAA 1991-2020 normals from Sequim'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 Sequim, not an official NOAA class or a year-ahead forecast.
Questions about Sequim's climate
How much rain does Sequim get? ▼
How much energy does heating and cooling require in Sequim? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Sequim's primary station: SEQUIM 2 E (USC00457544). 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 5363385). Match rule for Sequim: 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 Sequim 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.