West Kootenai weather by month
What a typical year looks like in West Kootenai, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Eureka Ranger Station, 13 km from West Kootenai; records cover 1960–2025.
The year at a glance
- Precipitation a year
- 15 in381 mm
- Snow a year
- 35 in89 cm
- Last spring freeze
- May 14
- First fall freeze
- Sep 21
- Heating degree days
- 6,947
- Cooling degree days
- 399
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
West Kootenai in January
Highs average 32°0° and lows 19°−7°, with 0.92 in23 mm of precipitation and 9 in22 cm of snow in a typical January.
- Record high
- 63°17° (2005)
- Record low
- −35°−37° (1963)
- Heating degree days
- 1215
- Cooling degree days
- 0
West Kootenai in February
Highs average 39°4° and lows 21°−6°, with 0.72 in18 mm of precipitation and 6 in15 cm of snow in a typical February.
- Record high
- 66°19° (1995)
- Record low
- −30°−34° (1996)
- Heating degree days
- 984
- Cooling degree days
- 0
West Kootenai in March
Highs average 49°10° and lows 28°−2°, with 0.9 in23 mm of precipitation and 4 in9 cm of snow in a typical March.
- Record high
- 78°26° (2004)
- Record low
- −23°−31° (2019)
- Heating degree days
- 826
- Cooling degree days
- 0
West Kootenai in April
Highs average 60°15° and lows 34°1°, with 1 in25 mm of precipitation and 1 in2.5 cm of snow in a typical April.
- Record high
- 89°32° (1987)
- Record low
- 8°−13° (1975)
- Heating degree days
- 546
- Cooling degree days
- 0
West Kootenai in May
Highs average 70°21° and lows 42°5°, with 1.8 in45 mm of precipitation and 0.2 in0.5 cm of snow in a typical May.
- Record high
- 94°34° (1966)
- Record low
- 22°−6° (1967)
- Heating degree days
- 292
- Cooling degree days
- 10
West Kootenai in June
Highs average 77°25° and lows 49°9°, with 2.5 in64 mm of precipitation in a typical June.
- Record high
- 106°41° (2021)
- Record low
- 27°−3° (1973)
- Heating degree days
- 119
- Cooling degree days
- 46
West Kootenai in July
Highs average 87°30° and lows 53°12°, with 1.1 in29 mm of precipitation in a typical July.
- Record high
- 105°41° (2006)
- Record low
- 30°−1° (1962)
- Heating degree days
- 27
- Cooling degree days
- 169
West Kootenai in August
Highs average 86°30° and lows 51°11°, with 1.1 in27 mm of precipitation in a typical August.
- Record high
- 106°41° (2018)
- Record low
- 30°−1° (1969)
- Heating degree days
- 36
- Cooling degree days
- 148
West Kootenai in September
Highs average 75°24° and lows 44°7°, with 1.3 in32 mm of precipitation in a typical September.
- Record high
- 98°37° (1967)
- Record low
- 18°−8° (1985)
- Heating degree days
- 196
- Cooling degree days
- 26
West Kootenai in OctoberThis month
Highs average 57°14° and lows 35°2°, with 1.2 in31 mm of precipitation and 0.6 in1.5 cm of snow in a typical October.
- Record high
- 86°30° (1980)
- Record low
- 0°−18° (2002)
- Heating degree days
- 582
- Cooling degree days
- 0
West Kootenai in November
Highs average 41°5° and lows 27°−3°, with 1.2 in31 mm of precipitation and 5 in13 cm of snow in a typical November.
- Record high
- 68°20° (1999)
- Record low
- −23°−31° (1985)
- Heating degree days
- 918
- Cooling degree days
- 0
West Kootenai in December
Highs average 31°0° and lows 21°−6°, with 1.2 in31 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 59°15° (2021)
- Record low
- −50°−46° (1968)
- Heating degree days
- 1206
- Cooling degree days
- 0