Twin Bridges weather by month
What a typical year looks like in Twin Bridges, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Twin Bridges, 1 km from Twin Bridges; records cover 1955–2026.
The year at a glance
- Precipitation a year
- 9.4 in240 mm
- Snow a year
- Rare
- Last spring freeze
- Jun 11
- First fall freeze
- Aug 27
- Heating degree days
- 7,932
- Cooling degree days
- 117
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −11°−24° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Twin Bridges in January
Highs average 35°2° and lows 13°−11°, with 0.22 in5.6 mm of precipitation in a typical January.
- Record high
- 62°17° (2015)
- Record low
- −39° (1957)
- Heating degree days
- 1265
- Cooling degree days
- 0
Twin Bridges in February
Highs average 40°4° and lows 15°−9°, with 0.22 in5.6 mm of precipitation in a typical February.
- Record high
- 65°18° (2015)
- Record low
- −32°−36° (1989)
- Heating degree days
- 1054
- Cooling degree days
- 0
Twin Bridges in March
Highs average 49°10° and lows 22°−6°, with 0.37 in9.4 mm of precipitation in a typical March.
- Record high
- 78°26° (1986)
- Record low
- −28°−33° (2019)
- Heating degree days
- 913
- Cooling degree days
- 0
Twin Bridges in April
Highs average 57°14° and lows 28°−2°, with 0.85 in22 mm of precipitation in a typical April.
- Record high
- 86°30° (2021)
- Record low
- 2°−17° (1997)
- Heating degree days
- 675
- Cooling degree days
- 0
Twin Bridges in May
Highs average 66°19° and lows 36°2°, with 1.7 in43 mm of precipitation in a typical May.
- Record high
- 93°34° (2003)
- Record low
- 12°−11° (2010)
- Heating degree days
- 427
- Cooling degree days
- 1
Twin Bridges in June
Highs average 75°24° and lows 43°6°, with 2.2 in55 mm of precipitation in a typical June.
- Record high
- 99°37° (2015)
- Record low
- 24°−4° (1975)
- Heating degree days
- 201
- Cooling degree days
- 12
Twin Bridges in July
Highs average 85°29° and lows 46°8°, with 0.89 in23 mm of precipitation in a typical July.
- Record high
- 101°38° (2002)
- Record low
- 28°−2° (1981)
- Heating degree days
- 52
- Cooling degree days
- 65
Twin Bridges in August
Highs average 83°29° and lows 43°6°, with 0.75 in19 mm of precipitation in a typical August.
- Record high
- 101°38° (2018)
- Record low
- 23°−5° (1992)
- Heating degree days
- 88
- Cooling degree days
- 36
Twin Bridges in September
Highs average 74°23° and lows 37°3°, with 0.88 in22 mm of precipitation in a typical September.
- Record high
- 98°37° (2017)
- Record low
- 10°−12° (1985)
- Heating degree days
- 300
- Cooling degree days
- 3
Twin Bridges in OctoberThis month
Highs average 59°15° and lows 28°−2°, with 0.73 in19 mm of precipitation in a typical October.
- Record high
- 87°31° (2010)
- Record low
- −9°−23° (2020)
- Heating degree days
- 664
- Cooling degree days
- 0
Twin Bridges in November
Highs average 44°7° and lows 19°−7°, with 0.33 in8.4 mm of precipitation in a typical November.
- Record high
- 73°23° (2020)
- Record low
- −27°−33° (1959)
- Heating degree days
- 999
- Cooling degree days
- 0
Twin Bridges in December
Highs average 35°1° and lows 12°−11°, with 0.33 in8.4 mm of precipitation in a typical December.
- Record high
- 68°20° (2021)
- Record low
- −35°−37° (1990)
- Heating degree days
- 1294
- Cooling degree days
- 0