Trout Creek weather by month
What a typical year looks like in Trout Creek, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Trout Creek Rs, 5 km from Trout Creek; records cover 1960–2026.
The year at a glance
- Precipitation a year
- 26.8 in681 mm
- Snow a year
- 51 in131 cm
- Last spring freeze
- May 24
- First fall freeze
- Sep 22
- Heating degree days
- 7,089
- Cooling degree days
- 233
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 0°−18° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Trout Creek in January
Highs average 34°1° and lows 22°−5°, with 3.2 in81 mm of precipitation and 18 in46 cm of snow in a typical January.
- Record high
- 57°14° (1989)
- Record low
- −33°−36° (1979)
- Heating degree days
- 1147
- Cooling degree days
- 0
Trout Creek in February
Highs average 39°4° and lows 23°−5°, with 2.3 in59 mm of precipitation and 6 in16 cm of snow in a typical February.
- Record high
- 69°21° (1995)
- Record low
- −23°−31° (1972)
- Heating degree days
- 957
- Cooling degree days
- 0
Trout Creek in March
Highs average 48°9° and lows 28°−2°, with 1.9 in49 mm of precipitation and 4 in9 cm of snow in a typical March.
- Record high
- 77°25° (2004)
- Record low
- −11°−24° (2009)
- Heating degree days
- 836
- Cooling degree days
- 0
Trout Creek in April
Highs average 58°14° and lows 32°0°, with 1.8 in44 mm of precipitation and 0.3 in0.8 cm of snow in a typical April.
- Record high
- 92°33° (1977)
- Record low
- 9°−13° (1975)
- Heating degree days
- 600
- Cooling degree days
- 0
Trout Creek in May
Highs average 68°20° and lows 39°4°, with 2.1 in52 mm of precipitation in a typical May.
- Record high
- 98°37° (1966)
- Record low
- 18°−8° (1972)
- Heating degree days
- 359
- Cooling degree days
- 5
Trout Creek in June
Highs average 74°23° and lows 45°7°, with 2.4 in61 mm of precipitation in a typical June.
- Record high
- 102°39° (2008)
- Record low
- 27°−3° (1964)
- Heating degree days
- 187
- Cooling degree days
- 22
Trout Creek in July
Highs average 85°29° and lows 49°9°, with 0.9 in23 mm of precipitation in a typical July.
- Record high
- 105°41° (1994)
- Record low
- 27°−3° (1979)
- Heating degree days
- 52
- Cooling degree days
- 108
Trout Creek in August
Highs average 85°29° and lows 47°8°, with 0.86 in22 mm of precipitation in a typical August.
- Record high
- 110°43° (1961)
- Record low
- 26°−3° (1965)
- Heating degree days
- 66
- Cooling degree days
- 86
Trout Creek in September
Highs average 74°23° and lows 41°5°, with 1.3 in34 mm of precipitation in a typical September.
- Record high
- 101°38° (1998)
- Record low
- 18°−8° (2000)
- Heating degree days
- 234
- Cooling degree days
- 12
Trout Creek in OctoberThis month
Highs average 58°14° and lows 35°1°, with 2.9 in73 mm of precipitation in a typical October.
- Record high
- 89°32° (1970)
- Record low
- 5°−15° (1971)
- Heating degree days
- 584
- Cooling degree days
- 0
Trout Creek in November
Highs average 41°5° and lows 29°−2°, with 3.5 in88 mm of precipitation and 6 in15 cm of snow in a typical November.
- Record high
- 69°21° (1965)
- Record low
- −8°−22° (1985)
- Heating degree days
- 909
- Cooling degree days
- 0
Trout Creek in December
Highs average 33°1° and lows 22°−5°, with 3.7 in94 mm of precipitation and 17 in43 cm of snow in a typical December.
- Record high
- 57°14° (2025)
- Record low
- −40° (1968)
- Heating degree days
- 1158
- Cooling degree days
- 0