Deer Park, 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 Deer Park's primary NOAA station, DEER PARK AP.
The climate verdict for Deer Park
Deer Park, Washington has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 46°F. Its climate comfort score of 64/100 (good) lands mid-pack nationally, exceeding 49% of station-mapped location scores.
- 46°F
- average temperature, NOAA 1991-2020 normal
- 64/100
- comfort score, above 49% of station-mapped location scores
- 22.5"
- precipitation, annual total
- 115 days
- growing season, frost-free days
Deer Park: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00094119 · Deer Park, WA 46°F mean · 22.5" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 46°F
- RANK-COOL #1,441
- PHOTO-FINISH ≈ Stevensville
- PRCP-DRY 22.5"
- SWING-MID 39°F
- COMF-MID 64/100
- LOAD-HEAT 7,286 HDD
- STN-1 USW00094119
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Stevensville, MT (+ 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.
- Deer Park (this station) 46°F
- Hot Livingston, MT 46°F
- Near Stevensville, MT 46°F
- Near Laurel Summit, PA 46°F
- Near Diamond Valley…, NV 46°F
Climate Living Index · Deer Park
Deer Park: 26/100 · grade F
Deer Park publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Deer Park, not an official NOAA rating. Rankings still use Comfort Score 64/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 22.5 in · 12.5 from 35 in | 56/100 · C |
| Annual temperature balance | 45.5°F · 22.0° from 67.5°F | 21/100 · F |
| Normal heat + freeze calendar | 187 calendar days | 21/100 · F |
| Frost-free season | 115 days/year | 5/100 · F |
Deer Park · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Deer Park is a continental Köppen climate: Dsb
Coldest-month mean 27.2°F and warmest-month mean 66.3°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
- 66.3°F
- Coldest month
- 27.2°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 Deer Park sits across the climate record
Three NOAA fields for Deer Park's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 79%
- Among 6,861 stations, Deer Park sits in the cooler third of annual means.
- Annual precipitation
- 31st percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 31st percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Deer Park compares across U.S. station-mapped locations
Deer Park's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 49th percentile score exceeds 49% 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 34°F (1°C) | 21°F (-6°C) | 28°F (-2°C) | 2.9" | 27.5 | 0.0 |
| February | 39°F (4°C) | 22°F (-6°C) | 30°F (-1°C) | 1.6" | 25.1 | 0.0 |
| March | 49°F (9°C) | 27°F (-3°C) | 38°F (3°C) | 2.3" | 24.6 | 0.0 |
| April | 58°F (14°C) | 32°F (0°C) | 45°F (7°C) | 1.9" | 17.9 | 0.0 |
| May | 67°F (20°C) | 39°F (4°C) | 53°F (12°C) | 1.9" | 6.7 | 0.1 |
| June | 73°F (23°C) | 44°F (7°C) | 59°F (15°C) | 1.9" | 0.5 | 1.5 |
| July | 84°F (29°C) | 48°F (9°C) | 66°F (19°C) | 0.6" | 0.1 | 9.5 |
| August | 84°F (29°C) | 47°F (8°C) | 66°F (19°C) | 0.7" | 0.1 | 8.8 |
| September | 74°F (23°C) | 40°F (4°C) | 57°F (14°C) | 0.8" | 4.3 | 1.5 |
| October | 58°F (14°C) | 32°F (0°C) | 45°F (7°C) | 2.0" | 17.4 | 0.0 |
| November | 42°F (5°C) | 26°F (-3°C) | 34°F (1°C) | 2.8" | 21.7 | 0.0 |
| December | 33°F (1°C) | 21°F (-6°C) | 27°F (-3°C) | 3.1" | 28.2 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 87°F around July 28, short of 90°F on every date, while 187 dates carry a normal low at or below freezing, the coldest 20°F near December 27.
The freezing stretch
The normal low stays at or below 32°F into April 17, then returns to freezing around October 14, covering 187 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 51% of years recorded at least a hundredth of an inch. The driest is July 30 at 12%. Summed across the calendar, that is about 124 wet dates a year.
The widest day
August 2 carries the biggest normal gap between afternoon and dawn, 38°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Deer Park.
Where Deer Park Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 38°F, sharper than nine in ten ranked stations see.
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 187 nights a year, more than most ranked stations.
Deer Park earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
14.9 days with precipitation
11.4 days with precipitation
13.6 days with precipitation
11.4 days with precipitation
11.0 days with precipitation
9.5 days with precipitation
4.0 days with precipitation
4.1 days with precipitation
5.6 days with precipitation
9.6 days with precipitation
14.2 days with precipitation
14.8 days with precipitation
Deer Park spreads its precipitation across the year
Neither half of the year dominates here: June through August take 14% of the annual total and December through February 34%, with neither reaching the 35% that would mark a distinct wet season. Deer Park has no dry season to plan around, though it does carry a 39.1°F seasonal spread.
The gap between the wettest and driest month still matters: December averages 3.1" and July 0.6". The three wettest months together take 39% 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 Deer Park in small, frequent amounts
Deer Park records about 124 days with measurable precipitation a year and 22.5" in total, which works out to roughly 0.18 inches on an average wet day. Precipitation on 34% 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: January, about 15 of them.
- Fewest: July, about 4.
- Average depth per wet day: 0.18 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.
Frost Dates & Growing Season
First Fall Freeze
September 14
50% probability date
Last Spring Freeze
May 22
50% probability date
Growing Season
115 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,286
Higher = more heating needed
Cooling Degree Days
217
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WA closest to Deer Park 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 (46°F here).
- Big Horn, WY 46°F · 0.0°F off
- Britt, IA 46°F · 0.0°F off
- Caledonia, MN 46°F · 0.0°F off
- Charlevoix, MI 46°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (22.5" here), excluding temperature-peer places.
- Culbertson, NE 22.5" · 0.0" off
- Monument, CO 22.5" · 0.0" off
- Flagstaff, AZ 22.5" · 0.0" off
- Spur, TX 22.5" · 0.0" off
Data-derived climate profile
How Deer Park's climate pattern fits together
heating led · moderate · mid swing
Deer Park's energy balance leans toward cold weather: 7,286 annual heating degree days against 217 for cooling. Its 39.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 115 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.
July and December mark the typical warm and cold ends of the calendar in Deer Park's middle-range seasonal profile. The measured spread is 39.1°F. The annual average is 46°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Deer Park's 22.5 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Deer Park'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 Deer Park, not an official NOAA class or a year-ahead forecast.
Questions about Deer Park's climate
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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 Deer Park's primary station: DEER PARK AP (USW00094119). 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 5317320). Match rule for Deer Park: 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 Deer Park 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.