Tonasket weather by month
What a typical year looks like in Tonasket, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Tonasket 11ne, 17 km from Tonasket; records cover 2012–2026.
The year at a glance
- Precipitation a year
- 17.5 in444 mm
- Snow a year
- Rare
- Last spring freeze
- May 15
- First fall freeze
- Oct 3
- Heating degree days
- 8,323
- Cooling degree days
- 170
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 90°32° (cooling, 1%).
Month by month
Tonasket in January
Highs average 29°−2° and lows 16°−9°, with 1.7 in44 mm of precipitation in a typical January.
- Record high
- 48°9° (2014)
- Record low
- −23°−31° (2024)
- Heating degree days
- 1316
- Cooling degree days
- 0
Tonasket in February
Highs average 33°1° and lows 19°−7°, with 1.4 in36 mm of precipitation in a typical February.
- Record high
- 49°9° (2018)
- Record low
- −10°−23° (2014)
- Heating degree days
- 1089
- Cooling degree days
- 0
Tonasket in March
Highs average 41°5° and lows 26°−4°, with 1.4 in36 mm of precipitation in a typical March.
- Record high
- 63°17° (2024)
- Record low
- −2°−19° (2019)
- Heating degree days
- 980
- Cooling degree days
- 0
Tonasket in April
Highs average 51°11° and lows 32°0°, with 1.2 in31 mm of precipitation in a typical April.
- Record high
- 75°24° (2016)
- Record low
- 15°−9° (2022)
- Heating degree days
- 694
- Cooling degree days
- 0
Tonasket in May
Highs average 60°16° and lows 41°5°, with 2.1 in54 mm of precipitation in a typical May.
- Record high
- 86°30° (2021)
- Record low
- 26°−3° (2024)
- Heating degree days
- 451
- Cooling degree days
- 0
Tonasket in June
Highs average 67°19° and lows 46°8°, with 2.2 in57 mm of precipitation in a typical June.
- Record high
- 103°39° (2021)
- Record low
- 30°−1° (2021)
- Heating degree days
- 272
- Cooling degree days
- 15
Tonasket in July
Highs average 77°25° and lows 52°11°, with 0.82 in21 mm of precipitation in a typical July.
- Record high
- 99°37° (2021)
- Record low
- 39°4° (2012)
- Heating degree days
- 88
- Cooling degree days
- 78
Tonasket in August
Highs average 77°25° and lows 52°11°, with 0.55 in14 mm of precipitation in a typical August.
- Record high
- 96°36° (2021)
- Record low
- 39°4° (2021)
- Heating degree days
- 76
- Cooling degree days
- 65
Tonasket in September
Highs average 68°20° and lows 44°7°, with 0.72 in18 mm of precipitation in a typical September.
- Record high
- 96°36° (2025)
- Record low
- 27°−3° (2019)
- Heating degree days
- 287
- Cooling degree days
- 12
Tonasket in OctoberThis month
Highs average 52°11° and lows 33°1°, with 1.2 in30 mm of precipitation in a typical October.
- Record high
- 76°24° (2014)
- Record low
- 11°−12° (2020)
- Heating degree days
- 699
- Cooling degree days
- 0
Tonasket in November
Highs average 36°2° and lows 25°−4°, with 1.9 in47 mm of precipitation in a typical November.
- Record high
- 58°14° (2012)
- Record low
- −6°−21° (2014)
- Heating degree days
- 1038
- Cooling degree days
- 0
Tonasket in December
Highs average 28°−2° and lows 17°−9°, with 2.2 in56 mm of precipitation in a typical December.
- Record high
- 60°16° (2021)
- Record low
- −22°−30° (2022)
- Heating degree days
- 1333
- Cooling degree days
- 0