Colfax weather by month
What a typical year looks like in Colfax, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Pullman 2 NW, 20 km from Colfax; records cover 1940–2026.
The year at a glance
- Precipitation a year
- 20.4 in518 mm
- Snow a year
- 33 in83 cm
- Last spring freeze
- May 8
- First fall freeze
- Sep 24
- Heating degree days
- 6,419
- Cooling degree days
- 331
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 5°−15° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Colfax in January
Highs average 38°3° and lows 26°−4°, with 2.7 in68 mm of precipitation and 10 in24 cm of snow in a typical January.
- Record high
- 59°15° (2015)
- Record low
- −29°−34° (1957)
- Heating degree days
- 1034
- Cooling degree days
- 0
Colfax in February
Highs average 42°6° and lows 27°−3°, with 1.9 in49 mm of precipitation and 5 in12 cm of snow in a typical February.
- Record high
- 66°19° (1986)
- Record low
- −24°−31° (1996)
- Heating degree days
- 854
- Cooling degree days
- 0
Colfax in March
Highs average 50°10° and lows 31°0°, with 2.1 in52 mm of precipitation and 2.5 in6.4 cm of snow in a typical March.
- Record high
- 77°25° (2025)
- Record low
- −6°−21° (2019)
- Heating degree days
- 766
- Cooling degree days
- 0
Colfax in April
Highs average 57°14° and lows 35°2°, with 2 in50 mm of precipitation and 0.7 in1.8 cm of snow in a typical April.
- Record high
- 88°31° (1987)
- Record low
- 13°−11° (1966)
- Heating degree days
- 563
- Cooling degree days
- 0
Colfax in May
Highs average 66°19° and lows 42°5°, with 1.8 in46 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 97°36° (2001)
- Record low
- 21°−6° (2002)
- Heating degree days
- 345
- Cooling degree days
- 8
Colfax in June
Highs average 73°23° and lows 46°8°, with 1.2 in31 mm of precipitation in a typical June.
- Record high
- 106°41° (2021)
- Record low
- 30°−1° (1962)
- Heating degree days
- 191
- Cooling degree days
- 26
Colfax in July
Highs average 84°29° and lows 50°10°, with 0.44 in11 mm of precipitation in a typical July.
- Record high
- 104°40° (1960)
- Record low
- 32°0° (1945)
- Heating degree days
- 55
- Cooling degree days
- 123
Colfax in August
Highs average 85°30° and lows 50°10°, with 0.48 in12 mm of precipitation in a typical August.
- Record high
- 110°43° (1961)
- Record low
- 30°−1° (1942)
- Heating degree days
- 49
- Cooling degree days
- 134
Colfax in September
Highs average 76°24° and lows 44°7°, with 0.65 in17 mm of precipitation in a typical September.
- Record high
- 103°39° (2022)
- Record low
- 20°−7° (1983)
- Heating degree days
- 187
- Cooling degree days
- 38
Colfax in OctoberThis month
Highs average 61°16° and lows 36°2°, with 1.8 in46 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 90°32° (1992)
- Record low
- 7°−14° (2002)
- Heating degree days
- 513
- Cooling degree days
- 2
Colfax in November
Highs average 46°8° and lows 31°−1°, with 2.6 in67 mm of precipitation and 5 in12 cm of snow in a typical November.
- Record high
- 71°22° (1988)
- Record low
- −14°−26° (1955)
- Heating degree days
- 808
- Cooling degree days
- 0
Colfax in December
Highs average 37°3° and lows 25°−4°, with 2.8 in70 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 63°17° (2021)
- Record low
- −32°−36° (1968)
- Heating degree days
- 1054
- Cooling degree days
- 0