Cushman Powerhouse #2, Washington climate: Climate normals at a NOAA weather station
Cushman Powerhouse #2's normal year runs from 35°F December nights to 76°F July afternoons, with 92.0 inches of precipitation and 4 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.7°C, December lows of 2°C, July highs of 24°C, 2,336 mm of precipitation a year.
- NOAA stationCushman Powerhouse #2
- Station IDUSC00451939
- Location47.37°N 123.16°W
- Elevation21 ft (6 m)
On October 22, the normal high in Cushman Powerhouse #2 is 56°F and the normal low 43°F, and the chance of measurable rain or snow is 52%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Cushman Powerhouse #2.
- Jan 45° 36°
- Feb 48° 35°
- Mar 53° 37°
- Apr 58° 40°
- May 65° 46°
- Jun 70° 50°
- Jul 76° 54°
- Aug 76° 54°
- Sep 69° 50°
- Oct 58° 44°
- Nov 50° 39°
- Dec 44° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Cushman Powerhouse #2 each month?
July is the warmest month, with normal highs of 76°F; December the coldest, with normal lows of 35°F. The most precipitation falls in December (16.21 in), the least in July (0.87 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 45°F | 36°F | 40.5°F | 15.48 | 1.3 | 20 | <1 | 11 | 8 h 50 min |
| February | 48°F | 35°F | 41.6°F | 9.20 | 1.2 | 16 | <1 | 10 | 10 h 10 min |
| March | 53°F | 37°F | 44.9°F | 9.89 | 0.1 | 19 | <1 | 7 | 11 h 50 min |
| April | 58°F | 40°F | 48.9°F | 6.13 | 0.0 | 17 | <1 | 2 | 13 h 30 min |
| May | 65°F | 46°F | 55.5°F | 3.03 | 0.0 | 11 | <1 | <1 | 15 h |
| June | 70°F | 50°F | 59.9°F | 1.91 | 0.0 | 9 | <1 | <1 | 16 h |
| July | 76°F | 54°F | 64.8°F | 0.87 | 0.0 | 4 | 1 | <1 | 15 h 40 min |
| August | 76°F | 54°F | 64.8°F | 1.40 | 0.0 | 5 | <1 | <1 | 14 h 20 min |
| September | 69°F | 50°F | 59.6°F | 3.02 | 0.0 | 8 | <1 | <1 | 12 h 40 min |
| October | 58°F | 44°F | 51.2°F | 9.10 | 0.0 | 15 | <1 | 1 | 11 h |
| November | 50°F | 39°F | 44.1°F | 15.72 | 0.1 | 20 | <1 | 5 | 9 h 20 min |
| December | 44°F | 35°F | 39.7°F | 16.21 | 1.7 | 20 | <1 | 11 | 8 h 30 min |
| Year (annual) | 59°F | 43°F | 51.3°F | 91.96 | 4.4 | 164 | 2 | 46 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 7°C | 2°C | 4.7°C | 393 mm | 3 cm |
| February | 9°C | 2°C | 5.3°C | 234 mm | 3 cm |
| March | 11°C | 3°C | 7.2°C | 251 mm | 0 cm |
| April | 14°C | 5°C | 9.4°C | 156 mm | 0 cm |
| May | 19°C | 8°C | 13.1°C | 77 mm | 0 cm |
| June | 21°C | 10°C | 15.5°C | 49 mm | 0 cm |
| July | 24°C | 12°C | 18.2°C | 22 mm | 0 cm |
| August | 24°C | 12°C | 18.2°C | 36 mm | 0 cm |
| September | 21°C | 10°C | 15.3°C | 77 mm | 0 cm |
| October | 15°C | 7°C | 10.7°C | 231 mm | 0 cm |
| November | 10°C | 4°C | 6.7°C | 399 mm | 0 cm |
| December | 7°C | 2°C | 4.3°C | 412 mm | 4 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00451939; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Cushman Powerhouse #2?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, July has the fewest days with rain (4).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00451939.
When is the last frost at Cushman Powerhouse #2?
In Cushman Powerhouse #2, the last spring frost (32°F) comes after March 24 in half of years and after April 17 in one year in ten; the first autumn frost comes before November 15 in half of years and before October 25 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 241 year in 10 after April 17; 9 in 10 after February 26
- First autumn frost, half of years before
- November 151 year in 10 before October 25; 9 in 10 before December 8
NOAA puts the median frost-free season at 235 days, and the season without a hard freeze (28°F) at 294 days.
A hard freeze (28°F) comes after February 20 in half of springs and before December 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Cushman Powerhouse #2 in zone 8b in ZIP code 98592, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 9a: the coldest night of a typical year reaches 21°F (21 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00451939; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Cushman Powerhouse #2?
In a normal year in Cushman Powerhouse #2, 2 days a year reach 90°F, 46 nights fall to 32°F or colder and 164 days bring measurable precipitation.
- Days at 90°F or more
- 2a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 46a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 164a normal year
- Days with 1 inch of snow or more
- 2a normal year
The highest temperature in this station's record (since 1973) is 105°F, on June 29, 2021; the lowest is 11°F, on January 29, 1980.
The wettest calendar year on that record is 1983, with 115.59 in; the snowiest season is 2008–09, with 29.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00451939; records: ACIS (NOAA Regional Climate Centers), station USC00451939. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Cushman Powerhouse #2?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds at Cushman Powerhouse #2, 3.4 kWh per square metre a day. August is the sunniest month (78%) and December the cloudiest (51%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 52% | 1.0 |
| February | 60% | 1.9 |
| March | 58% | 2.9 |
| April | 63% | 4.2 |
| May | 66% | 5.3 |
| June | 68% | 5.7 |
| July | 78% | 6.3 |
| August | 78% | 5.4 |
| September | 74% | 3.9 |
| October | 63% | 2.3 |
| November | 54% | 1.2 |
| December | 51% | 0.8 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Cushman Powerhouse #2 record?
A normal year at Cushman Powerhouse #2 brings 5,106 heating degree days, 5% fewer than the median U.S. place (5,373), and 123 cooling degree days, 86% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,831 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 760 | 0 |
| February | 655 | 0 |
| March | 625 | 0 |
| April | 483 | 0 |
| May | 296 | 3 |
| June | 169 | 14 |
| July | 58 | 51 |
| August | 55 | 47 |
| September | 170 | 7 |
| October | 428 | 0 |
| November | 626 | 0 |
| December | 784 | 0 |
| Year (annual) | 5,106 | 123 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00451939. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Cushman Powerhouse #2 been warmer than normal?
2025 averaged 51.9°F, 0.6°F above the 1991-2020 normal of 51.3°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 51.4°F | +0.1°F | 103.40 | – |
| 2022 | 50.9°F | −0.4°F | 90.02 | – |
| 2023 | 51.9°F | +0.6°F | 88.01 | – |
| 2024 | 51.7°F | +0.4°F | 94.77 | – |
| 2025 | 51.9°F | +0.6°F | 77.81 | – |
Over 35 complete years from 1975 to 2025, the station's annual mean temperature rose at a fitted 2.4°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00451939; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Cushman Powerhouse #2's climate compare?
Cushman Powerhouse #2 is warmer than 66 of the 96 places with their own NOAA record in Washington, and wetter than 86. Across the 7,247 U.S. stations with normals, its annual mean of 51.3°F is warmer than 46%.
In the Köppen classification computed from these normals, Cushman Powerhouse #2 is Csb: temperate, dry-summer, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Cushman Powerhouse #2 share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Skokomish, WA558 people · 3 mi S
- Union, WA281 people · 3 mi SE
- Hoodsport, WA136 people · 2 mi N
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Cushman Powerhouse #2's climate
What is the coldest month at Cushman Powerhouse #2?
December, with a normal high of 44°F and a normal low of 35°F. The warmest is July (76°F by day, 54°F at night).
Does it snow at Cushman Powerhouse #2?
Yes: 4 inches in a normal year, falling on 2 days with 0.1 inch or more, the most in December (1.7 inches).
What is the rainiest month at Cushman Powerhouse #2?
December, with 16.21 in of precipitation in a normal year; the driest is July with 0.87 in.
What plant hardiness zone is Cushman Powerhouse #2 in?
The USDA's 2023 map puts Cushman Powerhouse #2 in zone 8b in ZIP code 98592, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 21°F (21 years, 1991-2020): zone 9a.
How late can frost come at Cushman Powerhouse #2?
In half of years the last 32°F night comes after March 24; in one year in ten it comes after April 17. Waiting until April 17 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Shelton, WA9 miles from this station, 51.4°F a year
- Matlock (8 mi S), WA19 miles from this station, 51.1°F a year
- Bremerton, WA26 miles from this station, 52.3°F a year
- Elma, WA27 miles from this station, 52.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made