Clearwater, Washington climate: Climate normals at a NOAA weather station
Clearwater's normal year runs from 35°F December nights to 73°F August afternoons, with 109.7 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.2°C, December lows of 1°C, August highs of 23°C, 2,787 mm of precipitation a year.
- NOAA stationClearwater
- Station IDUSC00451496
- Location47.57°N 124.29°W
- Elevation80 ft (24 m)
On October 23, the normal high in Clearwater is 58°F and the normal low 41°F, and the chance of measurable rain or snow is 63%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Clearwater.
- Jan 47° 36°
- Feb 51° 34°
- Mar 54° 37°
- Apr 59° 39°
- May 64° 43°
- Jun 67° 47°
- Jul 72° 50°
- Aug 73° 50°
- Sep 70° 46°
- Oct 61° 42°
- Nov 51° 38°
- Dec 46° 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 Clearwater each month?
August is the warmest month, with normal highs of 73°F; December the coldest, with normal lows of 35°F. The most precipitation falls in January (17.65 in), the least in July (1.81 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 47°F | 36°F | 41.4°F | 17.65 | 23 | <1 | 13 | 8 h 50 min |
| February | 51°F | 34°F | 42.6°F | 10.37 | 19 | <1 | 12 | 10 h 10 min |
| March | 54°F | 37°F | 45.2°F | 13.05 | 22 | <1 | 10 | 11 h 50 min |
| April | 59°F | 39°F | 48.5°F | 8.68 | 18 | <1 | 6 | 13 h 30 min |
| May | 64°F | 43°F | 53.3°F | 5.04 | 15 | <1 | 2 | 15 h |
| June | 67°F | 47°F | 57.0°F | 3.49 | 13 | <1 | <1 | 16 h |
| July | 72°F | 50°F | 60.8°F | 1.81 | 8 | 1 | <1 | 15 h 40 min |
| August | 73°F | 50°F | 61.2°F | 2.69 | 8 | <1 | <1 | 14 h 20 min |
| September | 70°F | 46°F | 58.3°F | 4.80 | 10 | <1 | 1 | 12 h 40 min |
| October | 61°F | 42°F | 51.4°F | 10.51 | 18 | <1 | 4 | 11 h |
| November | 51°F | 38°F | 44.5°F | 16.59 | 22 | <1 | 9 | 9 h 20 min |
| December | 46°F | 35°F | 40.2°F | 15.04 | 23 | <1 | 14 | 8 h 30 min |
| Year (annual) | 60°F | 41°F | 50.4°F | 109.72 | 199 | 1 | 72 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 8°C | 2°C | 5.2°C | 448 mm |
| February | 10°C | 1°C | 5.9°C | 263 mm |
| March | 12°C | 3°C | 7.3°C | 331 mm |
| April | 15°C | 4°C | 9.2°C | 220 mm |
| May | 18°C | 6°C | 11.8°C | 128 mm |
| June | 19°C | 8°C | 13.9°C | 89 mm |
| July | 22°C | 10°C | 16.0°C | 46 mm |
| August | 23°C | 10°C | 16.2°C | 68 mm |
| September | 21°C | 8°C | 14.6°C | 122 mm |
| October | 16°C | 6°C | 10.8°C | 267 mm |
| November | 11°C | 3°C | 6.9°C | 421 mm |
| December | 8°C | 1°C | 4.6°C | 382 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00451496; 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 Clearwater?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, July has the fewest days with rain (8).
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 USC00451496.
When is the last frost at Clearwater?
In Clearwater, the last spring frost (32°F) comes after April 29 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 17 in half of years and before September 27 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
- April 291 year in 10 after May 16; 9 in 10 after April 2
- First autumn frost, half of years before
- October 171 year in 10 before September 27; 9 in 10 before November 10
NOAA puts the median frost-free season at 171 days, and the season without a hard freeze (28°F) at 231 days.
A hard freeze (28°F) comes after March 25 in half of springs and before November 11 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Clearwater in zone 8b in ZIP code 98331, the nearest ZIP area.
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00451496; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Clearwater?
In a normal year in Clearwater, 1 day a year reaches 90°F, 72 nights fall to 32°F or colder and 199 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 72a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 199a normal year
The highest temperature in this station's record (since 1895) is 100°F, on July 30, 1907; the lowest is −8°F, on January 14, 1950.
The wettest calendar year on that record is 1968, with 156.75 in; the snowiest season is 1950–51, with 42.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00451496; records: ACIS (NOAA Regional Climate Centers), station USC00451496. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Clearwater?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds at Clearwater, 3.4 kWh per square metre a day. September is the sunniest month (73%) and January the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 54% | 1.0 |
| February | 62% | 1.9 |
| March | 62% | 3.0 |
| April | 66% | 4.3 |
| May | 67% | 5.2 |
| June | 68% | 5.7 |
| July | 71% | 5.7 |
| August | 72% | 4.9 |
| September | 73% | 3.9 |
| October | 65% | 2.3 |
| November | 58% | 1.3 |
| December | 54% | 0.9 |
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 Clearwater record?
A normal year at Clearwater brings 5,349 heating degree days, 0% fewer than the median U.S. place (5,373), and 26 cooling degree days, 97% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,415 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 730 | 0 |
| February | 629 | 0 |
| March | 615 | 0 |
| April | 494 | 0 |
| May | 364 | 1 |
| June | 242 | 3 |
| July | 140 | 10 |
| August | 128 | 9 |
| September | 204 | 3 |
| October | 422 | 0 |
| November | 614 | 0 |
| December | 769 | 0 |
| Year (annual) | 5,349 | 26 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00451496. 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.
How does Clearwater's climate compare?
Clearwater is warmer than 45 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 50.4°F is warmer than 42%.
In the Köppen classification computed from these normals, Clearwater is Cfb: temperate, no dry season, 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 Clearwater share this climate record?
Queets has no NOAA station with 1991-2020 normals of its 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.
- Queets, WA45 people · 4 mi SW
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 Clearwater's climate
What is the coldest month at Clearwater?
December, with a normal high of 46°F and a normal low of 35°F. The warmest is August (73°F by day, 50°F at night).
What is the rainiest month at Clearwater?
January, with 17.65 in of precipitation in a normal year; the driest is July with 1.81 in.
What plant hardiness zone is Clearwater in?
The USDA's 2023 map puts Clearwater in zone 8b in ZIP code 98331, the nearest ZIP area.
How late can frost come at Clearwater?
In half of years the last 32°F night comes after April 29; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Quinault (4 mi NE), WA23 miles from this station, 50.0°F a year
- Forks, WA27 miles from this station, 50.4°F a year
- Humptulips, WA27 miles from this station, 48.8°F a year
- Quillayute State Airport, WA28 miles from this station, 49.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made