Seeley Lake weather by month
What a typical year looks like in Seeley Lake, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Seeley Lake Ranger Station, 7 km from Seeley Lake; records cover 1936–2026.
The year at a glance
- Precipitation a year
- 21.6 in549 mm
- Snow a year
- 119 in302 cm
- Last spring freeze
- Jun 12
- First fall freeze
- Aug 25
- Heating degree days
- 8,565
- Cooling degree days
- 108
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −16°−27° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Seeley Lake in January
Highs average 32°0° and lows 12°−11°, with 2.6 in67 mm of precipitation and 30 in77 cm of snow in a typical January.
- Record high
- 55°13° (1962)
- Record low
- −53°−47° (1937)
- Heating degree days
- 1332
- Cooling degree days
- 0
Seeley Lake in February
Highs average 37°3° and lows 13°−11°, with 1.9 in49 mm of precipitation and 19 in47 cm of snow in a typical February.
- Record high
- 62°17° (1941)
- Record low
- −45°−43° (1989)
- Heating degree days
- 1130
- Cooling degree days
- 0
Seeley Lake in March
Highs average 45°7° and lows 20°−7°, with 1.4 in37 mm of precipitation and 15 in39 cm of snow in a typical March.
- Record high
- 73°23° (2004)
- Record low
- −42°−41° (1945)
- Heating degree days
- 1008
- Cooling degree days
- 0
Seeley Lake in April
Highs average 54°12° and lows 27°−3°, with 1.4 in35 mm of precipitation and 5 in11 cm of snow in a typical April.
- Record high
- 86°30° (1987)
- Record low
- −4°−20° (2002)
- Heating degree days
- 744
- Cooling degree days
- 0
Seeley Lake in May
Highs average 65°18° and lows 34°1°, with 1.9 in48 mm of precipitation and 0.7 in1.8 cm of snow in a typical May.
- Record high
- 93°34° (1986)
- Record low
- 13°−11° (1954)
- Heating degree days
- 486
- Cooling degree days
- 0
Seeley Lake in June
Highs average 72°22° and lows 41°5°, with 2.3 in59 mm of precipitation and 0.4 in1 cm of snow in a typical June.
- Record high
- 98°37° (2015)
- Record low
- 23°−5° (2001)
- Heating degree days
- 268
- Cooling degree days
- 8
Seeley Lake in July
Highs average 83°28° and lows 44°7°, with 1.1 in27 mm of precipitation in a typical July.
- Record high
- 102°39° (2007)
- Record low
- 28°−2° (1971)
- Heating degree days
- 94
- Cooling degree days
- 55
Seeley Lake in August
Highs average 83°28° and lows 43°6°, with 0.96 in24 mm of precipitation in a typical August.
- Record high
- 101°38° (1940)
- Record low
- 24°−4° (1937)
- Heating degree days
- 110
- Cooling degree days
- 40
Seeley Lake in September
Highs average 73°23° and lows 37°3°, with 1.2 in30 mm of precipitation in a typical September.
- Record high
- 96°36° (2022)
- Record low
- 15°−9° (2000)
- Heating degree days
- 316
- Cooling degree days
- 5
Seeley Lake in OctoberThis month
Highs average 56°13° and lows 29°−2°, with 2 in50 mm of precipitation and 2.3 in5.8 cm of snow in a typical October.
- Record high
- 86°30° (1992)
- Record low
- −10°−23° (1971)
- Heating degree days
- 702
- Cooling degree days
- 0
Seeley Lake in November
Highs average 40°4° and lows 21°−6°, with 2.5 in64 mm of precipitation and 18 in46 cm of snow in a typical November.
- Record high
- 66°19° (2016)
- Record low
- −31°−35° (1959)
- Heating degree days
- 1036
- Cooling degree days
- 0
Seeley Lake in December
Highs average 31°−1° and lows 13°−11°, with 2.4 in60 mm of precipitation and 29 in73 cm of snow in a typical December.
- Record high
- 61°16° (2021)
- Record low
- −44°−42° (1990)
- Heating degree days
- 1339
- Cooling degree days
- 0