Sleeping Buffalo weather by month
What a typical year looks like in Sleeping Buffalo, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Saco 1 Nnw, 14 km from Sleeping Buffalo; records cover 1966–2026.
The year at a glance
- Precipitation a year
- 13.4 in339 mm
- Snow a year
- Rare
- Last spring freeze
- May 15
- First fall freeze
- Sep 22
- Heating degree days
- 8,702
- Cooling degree days
- 349
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −28°−33° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
Sleeping Buffalo in January
Highs average 26°−4° and lows 2°−17°, with 0.26 in6.6 mm of precipitation in a typical January.
- Record high
- 62°17° (1968)
- Record low
- −51°−46° (2024)
- Heating degree days
- 1595
- Cooling degree days
- 0
Sleeping Buffalo in February
Highs average 30°−1° and lows 6°−15°, with 0.33 in8.4 mm of precipitation in a typical February.
- Record high
- 72°22° (1992)
- Record low
- −45°−43° (1971)
- Heating degree days
- 1322
- Cooling degree days
- 0
Sleeping Buffalo in March
Highs average 43°6° and lows 17°−8°, with 0.53 in13 mm of precipitation in a typical March.
- Record high
- 79°26° (1993)
- Record low
- −34°−37° (1996)
- Heating degree days
- 1082
- Cooling degree days
- 0
Sleeping Buffalo in April
Highs average 57°14° and lows 29°−2°, with 1.1 in27 mm of precipitation in a typical April.
- Record high
- 92°33° (1980)
- Record low
- −5°−21° (1975)
- Heating degree days
- 654
- Cooling degree days
- 0
Sleeping Buffalo in May
Highs average 68°20° and lows 40°4°, with 1.8 in45 mm of precipitation in a typical May.
- Record high
- 100°38° (1988)
- Record low
- 14°−10° (1984)
- Heating degree days
- 357
- Cooling degree days
- 6
Sleeping Buffalo in June
Highs average 74°24° and lows 50°10°, with 3 in76 mm of precipitation in a typical June.
- Record high
- 104°40° (1988)
- Record low
- 28°−2° (1979)
- Heating degree days
- 121
- Cooling degree days
- 42
Sleeping Buffalo in July
Highs average 83°28° and lows 55°13°, with 1.7 in43 mm of precipitation in a typical July.
- Record high
- 104°40° (1968)
- Record low
- 34°1° (1972)
- Heating degree days
- 27
- Cooling degree days
- 151
Sleeping Buffalo in August
Highs average 82°28° and lows 53°12°, with 1.4 in34 mm of precipitation in a typical August.
- Record high
- 105°41° (1971)
- Record low
- 31°−1° (1969)
- Heating degree days
- 51
- Cooling degree days
- 131
Sleeping Buffalo in September
Highs average 72°22° and lows 42°6°, with 1.4 in34 mm of precipitation in a typical September.
- Record high
- 100°38° (1983)
- Record low
- 17°−8° (1972)
- Heating degree days
- 262
- Cooling degree days
- 19
Sleeping Buffalo in OctoberThis month
Highs average 57°14° and lows 30°−1°, with 1.1 in27 mm of precipitation in a typical October.
- Record high
- 89°32° (1970)
- Record low
- −9°−23° (1991)
- Heating degree days
- 668
- Cooling degree days
- 0
Sleeping Buffalo in November
Highs average 41°5° and lows 17°−9°, with 0.54 in14 mm of precipitation in a typical November.
- Record high
- 78°26° (1999)
- Record low
- −37°−38° (1985)
- Heating degree days
- 1089
- Cooling degree days
- 0
Sleeping Buffalo in December
Highs average 29°−2° and lows 6°−14°, with 0.43 in11 mm of precipitation in a typical December.
- Record high
- 67°19° (2021)
- Record low
- −48°−44° (1972)
- Heating degree days
- 1474
- Cooling degree days
- 0