Busby weather by month
What a typical year looks like in Busby, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Busby, 2 km from Busby; records cover 1907–2026.
The year at a glance
- Precipitation a year
- 15.7 in399 mm
- Snow a year
- 52 in133 cm
- Last spring freeze
- May 21
- First fall freeze
- Sep 10
- Heating degree days
- 7,682
- Cooling degree days
- 443
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −20°−29° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Busby in January
Highs average 34°1° and lows 9°−13°, with 0.69 in18 mm of precipitation and 10 in25 cm of snow in a typical January.
- Record high
- 69°21° (1992)
- Record low
- −52°−47° (1916)
- Heating degree days
- 1355
- Cooling degree days
- 0
Busby in February
Highs average 37°3° and lows 11°−11°, with 0.71 in18 mm of precipitation and 10 in25 cm of snow in a typical February.
- Record high
- 72°22° (2005)
- Record low
- −53°−47° (1936)
- Heating degree days
- 1139
- Cooling degree days
- 0
Busby in March
Highs average 49°10° and lows 21°−6°, with 0.95 in24 mm of precipitation and 7 in19 cm of snow in a typical March.
- Record high
- 84°29° (2004)
- Record low
- −36°−38° (1920)
- Heating degree days
- 919
- Cooling degree days
- 0
Busby in April
Highs average 59°15° and lows 30°−1°, with 1.7 in42 mm of precipitation and 6 in14 cm of snow in a typical April.
- Record high
- 87°31° (1908)
- Record low
- −12°−24° (1908)
- Heating degree days
- 627
- Cooling degree days
- 0
Busby in May
Highs average 68°20° and lows 39°4°, with 2.7 in69 mm of precipitation and 0.9 in2.3 cm of snow in a typical May.
- Record high
- 97°36° (1934)
- Record low
- 12°−11° (1954)
- Heating degree days
- 363
- Cooling degree days
- 5
Busby in June
Highs average 78°26° and lows 47°8°, with 2.1 in54 mm of precipitation in a typical June.
- Record high
- 107°42° (1936)
- Record low
- 17°−8° (2024)
- Heating degree days
- 119
- Cooling degree days
- 50
Busby in July
Highs average 88°31° and lows 53°12°, with 1.4 in35 mm of precipitation in a typical July.
- Record high
- 109°43° (2002)
- Record low
- 18°−8° (2024)
- Heating degree days
- 22
- Cooling degree days
- 196
Busby in August
Highs average 88°31° and lows 51°10°, with 1 in26 mm of precipitation in a typical August.
- Record high
- 107°42° (1949)
- Record low
- 26°−3° (1910)
- Heating degree days
- 34
- Cooling degree days
- 160
Busby in September
Highs average 77°25° and lows 41°5°, with 1.6 in40 mm of precipitation and 0.2 in0.5 cm of snow in a typical September.
- Record high
- 105°41° (1950)
- Record low
- 6°−14° (1910)
- Heating degree days
- 211
- Cooling degree days
- 31
Busby in OctoberThis month
Highs average 61°16° and lows 30°−1°, with 1.5 in38 mm of precipitation and 4 in10 cm of snow in a typical October.
- Record high
- 95°35° (2011)
- Record low
- −21°−29° (1991)
- Heating degree days
- 608
- Cooling degree days
- 1
Busby in November
Highs average 46°8° and lows 19°−7°, with 0.78 in20 mm of precipitation and 6 in16 cm of snow in a typical November.
- Record high
- 82°28° (1999)
- Record low
- −38°−39° (1959)
- Heating degree days
- 972
- Cooling degree days
- 0
Busby in December
Highs average 36°2° and lows 10°−12°, with 0.64 in16 mm of precipitation and 9 in22 cm of snow in a typical December.
- Record high
- 76°24° (1939)
- Record low
- −52°−47° (1989)
- Heating degree days
- 1313
- Cooling degree days
- 0