Matlock (8 mi S), Washington climate: Climate normals at a NOAA weather station
Matlock (8 mi S)'s normal year runs from 34°F December nights to 78°F August afternoons, with 89.9 inches of precipitation and 2 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.6°C, December lows of 1°C, August highs of 25°C, 2,283 mm of precipitation a year.
- NOAA stationMatlock (8 mi S)
- Station IDUSC00455086
- Location47.15°N 123.40°W
- Elevation110 ft (34 m)
On October 23, the normal high in Matlock (8 mi S) is 58°F and the normal low 40°F, and the chance of measurable rain or snow is 60%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Matlock (8 mi S).
- Jan 47° 35°
- Feb 50° 34°
- Mar 54° 36°
- Apr 59° 38°
- May 67° 44°
- Jun 71° 48°
- Jul 77° 51°
- Aug 78° 51°
- Sep 72° 47°
- Oct 61° 41°
- Nov 51° 37°
- Dec 45° 34°
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 Matlock (8 mi S) each month?
August is the warmest month, with normal highs of 78°F; December the coldest, with normal lows of 34°F. The most precipitation falls in January (14.45 in), the least in July (1.04 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 47°F | 35°F | 40.9°F | 14.45 | 0.5 | 22 | <1 | 13 | 8 h 50 min |
| February | 50°F | 34°F | 41.8°F | 8.75 | 0.5 | 18 | <1 | 12 | 10 h 20 min |
| March | 54°F | 36°F | 44.6°F | 10.14 | 0.3 | 22 | <1 | 11 | 11 h 50 min |
| April | 59°F | 38°F | 48.8°F | 6.78 | 0.0 | 19 | <1 | 6 | 13 h 30 min |
| May | 67°F | 44°F | 55.2°F | 3.81 | 0.0 | 14 | <1 | 1 | 15 h |
| June | 71°F | 48°F | 59.5°F | 2.47 | 0.0 | 12 | 1 | <1 | 15 h 50 min |
| July | 77°F | 51°F | 64.3°F | 1.04 | 0.0 | 7 | 3 | <1 | 15 h 30 min |
| August | 78°F | 51°F | 64.4°F | 1.71 | 0.0 | 8 | 3 | <1 | 14 h 20 min |
| September | 72°F | 47°F | 59.4°F | 3.25 | 0.0 | 11 | 1 | <1 | 12 h 40 min |
| October | 61°F | 41°F | 51.0°F | 9.16 | 0.0 | 18 | <1 | 4 | 11 h |
| November | 51°F | 37°F | 44.1°F | 14.33 | 0.5 | 21 | <1 | 10 | 9 h 20 min |
| December | 45°F | 34°F | 39.5°F | 14.01 | 0.1 | 22 | <1 | 14 | 8 h 30 min |
| Year (annual) | 61°F | 41°F | 51.1°F | 89.90 | 1.9 | 195 | 9 | 71 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 8°C | 2°C | 4.9°C | 367 mm | 1 cm |
| February | 10°C | 1°C | 5.4°C | 222 mm | 1 cm |
| March | 12°C | 2°C | 7.0°C | 258 mm | 1 cm |
| April | 15°C | 3°C | 9.3°C | 172 mm | 0 cm |
| May | 19°C | 6°C | 12.9°C | 97 mm | 0 cm |
| June | 22°C | 9°C | 15.3°C | 63 mm | 0 cm |
| July | 25°C | 11°C | 17.9°C | 26 mm | 0 cm |
| August | 25°C | 11°C | 18.0°C | 43 mm | 0 cm |
| September | 22°C | 8°C | 15.2°C | 83 mm | 0 cm |
| October | 16°C | 5°C | 10.6°C | 233 mm | 0 cm |
| November | 11°C | 3°C | 6.7°C | 364 mm | 1 cm |
| December | 7°C | 1°C | 4.2°C | 356 mm | 0 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00455086; 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 Matlock (8 mi S)?
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 (7).
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 USC00455086.
When is the last frost at Matlock (8 mi S)?
In Matlock (8 mi S), the last spring frost (32°F) comes after April 23 in half of years and after May 7 in one year in ten; the first autumn frost comes before October 20 in half of years and before October 1 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 231 year in 10 after May 7; 9 in 10 after April 1
- First autumn frost, half of years before
- October 201 year in 10 before October 1; 9 in 10 before November 10
NOAA puts the median frost-free season at 183 days, and the season without a hard freeze (28°F) at 236 days.
A hard freeze (28°F) comes after March 23 in half of springs and before November 10 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Matlock (8 mi S) in zone 8b in ZIP code 98541, 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 USC00455086; 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 Matlock (8 mi S)?
In a normal year in Matlock (8 mi S), 9 days a year reach 90°F, 71 nights fall to 32°F or colder and 195 days bring measurable precipitation.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 71a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 195a normal year
- Days with 1 inch of snow or more
- 1a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00455086.
How sunny is it at Matlock (8 mi S)?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds at Matlock (8 mi S), 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 Matlock (8 mi S) record?
A normal year at Matlock (8 mi S) brings 5,155 heating degree days, 4% fewer than the median U.S. place (5,373), and 103 cooling degree days, 89% 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 1,770 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 749 | 0 |
| February | 651 | 0 |
| March | 632 | 0 |
| April | 486 | 0 |
| May | 307 | 2 |
| June | 178 | 13 |
| July | 64 | 42 |
| August | 59 | 40 |
| September | 175 | 6 |
| October | 436 | 0 |
| November | 627 | 0 |
| December | 790 | 0 |
| Year (annual) | 5,155 | 103 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00455086. 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 Matlock (8 mi S) been warmer than normal?
2025 averaged 51.7°F, 0.6°F above the 1991-2020 normal of 51.1°F. 2 of the 3 complete years since 2023 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2023 | 51.5°F | +0.4°F | 75.22 | – |
| 2024 | 51.1°F | at normal | 96.26 | – |
| 2025 | 51.7°F | +0.6°F | 84.11 | – |
Source: observed years: ACIS, station USC00455086. A year counts only with all twelve months complete.
How does Matlock (8 mi S)'s climate compare?
Matlock (8 mi S) is warmer than 62 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 51.1°F is warmer than 45%.
In the Köppen classification computed from these normals, Matlock (8 mi S) 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.
Questions about Matlock (8 mi S)'s climate
What is the coldest month at Matlock (8 mi S)?
December, with a normal high of 45°F and a normal low of 34°F. The warmest is August (78°F by day, 51°F at night).
Does it snow at Matlock (8 mi S)?
Yes: 2 inches in a normal year, falling on 1 days with 0.1 inch or more, the most in January (0.5 inches).
What is the rainiest month at Matlock (8 mi S)?
January, with 14.45 in of precipitation in a normal year; the driest is July with 1.04 in.
What plant hardiness zone is Matlock (8 mi S) in?
The USDA's 2023 map puts Matlock (8 mi S) in zone 8b in ZIP code 98541, the nearest ZIP area.
How late can frost come at Matlock (8 mi S)?
In half of years the last 32°F night comes after April 23; in one year in ten it comes after May 7. Waiting until May 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Elma, WA9 miles from this station, 52.3°F a year
- Shelton, WA14 miles from this station, 51.4°F a year
- Cushman Powerhouse #2, WA19 miles from this station, 51.3°F a year
- Aberdeen, WA24 miles from this station, 51.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made