Republic, Washington climate: Normal weather by month, frost dates and records
Republic's normal year runs from 16°F December nights to 84°F July afternoons, with 18.1 inches of precipitation and 53 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.6°C, December lows of −9°C, July highs of 29°C, 459 mm of precipitation a year.
- NOAA stationRepublic
- Station IDUSC00456974
- Location48.65°N 118.74°W
- Elevation2,555 ft (779 m)
- Population1,020
On October 23, the normal high in Republic is 52°F and the normal low 28°F, and the chance of measurable rain or snow is 30%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Republic.
- Jan 31° 16°
- Feb 38° 18°
- Mar 49° 24°
- Apr 58° 29°
- May 68° 37°
- Jun 74° 42°
- Jul 84° 47°
- Aug 84° 45°
- Sep 74° 38°
- Oct 57° 29°
- Nov 40° 23°
- Dec 30° 16°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Republic each month?
July is the warmest month, with normal highs of 84°F; December the coldest, with normal lows of 16°F. The most precipitation falls in December (2.19 in), the least in August (0.64 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 31°F | 16°F | 23.6°F | 1.62 | 13.1 | 11 | <1 | 30 | 8 h 40 min |
| February | 38°F | 18°F | 27.9°F | 1.34 | 6.6 | 8 | <1 | 26 | 10 h 10 min |
| March | 49°F | 24°F | 36.3°F | 1.54 | 3.3 | 9 | <1 | 27 | 11 h 50 min |
| April | 58°F | 29°F | 43.8°F | 1.38 | 0.5 | 9 | <1 | 19 | 13 h 40 min |
| May | 68°F | 37°F | 52.5°F | 2.06 | 0.0 | 11 | <1 | 7 | 15 h 10 min |
| June | 74°F | 42°F | 58.1°F | 2.17 | 0.0 | 10 | 1 | <1 | 16 h 10 min |
| July | 84°F | 47°F | 65.3°F | 1.16 | 0.0 | 6 | 8 | <1 | 15 h 50 min |
| August | 84°F | 45°F | 64.6°F | 0.64 | 0.0 | 4 | 8 | <1 | 14 h 30 min |
| September | 74°F | 38°F | 56.0°F | 0.87 | 0.0 | 5 | 1 | 5 | 12 h 40 min |
| October | 57°F | 29°F | 43.2°F | 1.25 | 0.4 | 8 | <1 | 19 | 10 h 50 min |
| November | 40°F | 23°F | 31.5°F | 1.86 | 7.7 | 11 | <1 | 25 | 9 h 10 min |
| December | 30°F | 16°F | 23.1°F | 2.19 | 20.9 | 12 | <1 | 30 | 8 h 20 min |
| Year (annual) | 57°F | 30°F | 43.8°F | 18.08 | 52.5 | 106 | 18 | 188 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −9°C | −4.7°C | 41 mm | 33 cm |
| February | 3°C | −8°C | −2.3°C | 34 mm | 17 cm |
| March | 9°C | −5°C | 2.4°C | 39 mm | 8 cm |
| April | 15°C | −1°C | 6.6°C | 35 mm | 1 cm |
| May | 20°C | 3°C | 11.4°C | 52 mm | 0 cm |
| June | 23°C | 6°C | 14.5°C | 55 mm | 0 cm |
| July | 29°C | 8°C | 18.5°C | 29 mm | 0 cm |
| August | 29°C | 7°C | 18.1°C | 16 mm | 0 cm |
| September | 23°C | 3°C | 13.3°C | 22 mm | 0 cm |
| October | 14°C | −1°C | 6.2°C | 32 mm | 1 cm |
| November | 4°C | −5°C | −0.3°C | 47 mm | 20 cm |
| December | −1°C | −9°C | −4.9°C | 56 mm | 53 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00456974; 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.
When is the best weather to visit Republic?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August 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 USC00456974.
When is the last frost in Republic?
In Republic, the last spring frost (32°F) comes after May 30 in half of years and after June 17 in one year in ten; the first autumn frost comes before September 10 in half of years and before August 28 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
- May 301 year in 10 after June 17; 9 in 10 after May 11
- First autumn frost, half of years before
- September 101 year in 10 before August 28; 9 in 10 before September 25
NOAA puts the median frost-free season at 102 days, and the season without a hard freeze (28°F) at 135 days.
A hard freeze (28°F) comes after May 12 in half of springs and before September 24 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Republic in zone 6a in ZIP code 99166, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Republic's NOAA station is in zone 5b: the coldest night of a typical year reaches −10°F (23 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 USC00456974; 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 in Republic?
In a normal year in Republic, 18 days a year reach 90°F (1 of them 100°F or more), 188 nights fall to 32°F or colder and 106 days bring measurable precipitation.
- Days at 90°F or more
- 18a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 188a normal year
- Days that stay below freezing
- 47high of 32°F or less
- Days with 0.01 inch of precipitation
- 106a normal year
- Days with 1 inch of snow or more
- 19a normal year
The highest temperature in this station's record (since 1899) is 109°F, on June 30, 2021; the lowest is −38°F, on December 30, 1968.
The wettest calendar year on that record is 2012, with 28.20 in; the snowiest season is 1968–69, with 113.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00456974; records: ACIS (NOAA Regional Climate Centers), station USC00456974. Records use complete months only; a month missing more than three days is left out.
How sunny is Republic?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Republic, 3.9 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 1.1 |
| February | 68% | 2.2 |
| March | 68% | 3.3 |
| April | 71% | 4.8 |
| May | 74% | 5.9 |
| June | 75% | 6.4 |
| July | 88% | 7.2 |
| August | 87% | 6.0 |
| September | 82% | 4.4 |
| October | 73% | 2.6 |
| November | 59% | 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 much heating and cooling does Republic need?
A normal year in Republic brings 7,866 heating degree days, 46% more than the median U.S. place (5,373), and 167 cooling degree days, 82% 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 1,547 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,283 | 0 |
| February | 1,037 | 0 |
| March | 891 | 0 |
| April | 638 | 0 |
| May | 391 | 2 |
| June | 219 | 13 |
| July | 69 | 78 |
| August | 78 | 66 |
| September | 278 | 8 |
| October | 677 | 0 |
| November | 1,005 | 0 |
| December | 1,299 | 0 |
| Year (annual) | 7,866 | 167 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00456974. 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.
Has Republic been warmer than normal lately?
Over 79 complete years from 1900 to 2022, the station's annual mean temperature rose at a fitted 3.3°F per century (+0.19°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Republic's climate compare?
Republic is warmer than 0 of the other 95 places with their own NOAA record in Washington, and wetter than 36. Across the 7,247 U.S. stations with normals, its annual mean of 43.8°F is warmer than 15%.
In the Köppen classification computed from these normals, Republic is Dsb: continental, 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 Republic share this climate record?
6 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.
- Curlew Lake, WA605 people · 7 mi NE
- Torboy, WA260 people · 3 mi NE
- Curlew, WA135 people · 17 mi N
- Danville, WA39 people · 26 mi NE
- Malo, WA36 people · 12 mi NE
- Pine Grove, WA13 people · 2 mi E
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 Republic's climate
What is the coldest month in Republic?
December, with a normal high of 30°F and a normal low of 16°F. The warmest is July (84°F by day, 47°F at night).
Does it snow in Republic?
Yes: 53 inches in a normal year, falling on 30 days with 0.1 inch or more, the most in December (20.9 inches).
What is the rainiest month in Republic?
December, with 2.19 in of precipitation in a normal year; the driest is August with 0.64 in.
What plant hardiness zone is Republic in?
The USDA's 2023 map puts Republic in zone 6a in ZIP code 99166, the nearest ZIP area. By the same method at Republic's NOAA station, the coldest night of a typical year reaches −10°F (23 years, 1991-2020): zone 5b.
How late can frost come in Republic?
In half of years the last 32°F night comes after May 30; in one year in ten it comes after June 17. Waiting until June 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
- Tonasket, WA33 miles from this station, 49.7°F a year
- Colville, WA37 miles from this station, 48.9°F a year
- Omak, WA38 miles from this station, 49.9°F a year
- Northport, WA45 miles from this station, 46.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made