Clinton weather by month
What a typical year looks like in Clinton, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Potomac, 17 km from Clinton; records cover 1964–2026.
The year at a glance
- Precipitation a year
- 15.1 in384 mm
- Snow a year
- 52 in132 cm
- Last spring freeze
- Jun 21
- First fall freeze
- Aug 6
- Heating degree days
- 9,387
- Cooling degree days
- 52
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −21°−29° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Clinton in January
Highs average 30°−1° and lows 8°−13°, with 1.4 in35 mm of precipitation and 16 in39 cm of snow in a typical January.
- Record high
- 60°16° (2005)
- Record low
- −47°−44° (2024)
- Heating degree days
- 1424
- Cooling degree days
- 0
Clinton in February
Highs average 35°2° and lows 9°−13°, with 1 in26 mm of precipitation and 7 in18 cm of snow in a typical February.
- Record high
- 64°18° (1995)
- Record low
- −45°−43° (1996)
- Heating degree days
- 1211
- Cooling degree days
- 0
Clinton in March
Highs average 46°8° and lows 18°−8°, with 0.76 in19 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 76°24° (2004)
- Record low
- −37°−38° (2019)
- Heating degree days
- 1039
- Cooling degree days
- 0
Clinton in April
Highs average 54°12° and lows 24°−5°, with 1.1 in29 mm of precipitation and 1.3 in3.3 cm of snow in a typical April.
- Record high
- 86°30° (1987)
- Record low
- −4°−20° (2002)
- Heating degree days
- 786
- Cooling degree days
- 0
Clinton in May
Highs average 64°18° and lows 30°−1°, with 1.9 in47 mm of precipitation and 0.4 in1 cm of snow in a typical May.
- Record high
- 97°36° (1986)
- Record low
- 13°−11° (1999)
- Heating degree days
- 560
- Cooling degree days
- 0
Clinton in June
Highs average 71°22° and lows 38°3°, with 2.2 in55 mm of precipitation in a typical June.
- Record high
- 97°36° (1977)
- Record low
- 23°−5° (1965)
- Heating degree days
- 310
- Cooling degree days
- 4
Clinton in July
Highs average 82°28° and lows 41°5°, with 0.83 in21 mm of precipitation in a typical July.
- Record high
- 103°39° (2002)
- Record low
- 24°−4° (1971)
- Heating degree days
- 145
- Cooling degree days
- 30
Clinton in August
Highs average 82°28° and lows 39°4°, with 0.62 in16 mm of precipitation in a typical August.
- Record high
- 102°39° (1969)
- Record low
- 22°−6° (1965)
- Heating degree days
- 165
- Cooling degree days
- 18
Clinton in September
Highs average 71°22° and lows 32°0°, with 0.91 in23 mm of precipitation and 0.2 in0.5 cm of snow in a typical September.
- Record high
- 97°36° (1998)
- Record low
- 10°−12° (2000)
- Heating degree days
- 406
- Cooling degree days
- 0
Clinton in OctoberThis month
Highs average 55°13° and lows 23°−5°, with 1.5 in37 mm of precipitation and 1.9 in4.8 cm of snow in a typical October.
- Record high
- 88°31° (1992)
- Record low
- −21°−29° (2020)
- Heating degree days
- 794
- Cooling degree days
- 0
Clinton in November
Highs average 39°4° and lows 16°−9°, with 1.6 in39 mm of precipitation and 7 in19 cm of snow in a typical November.
- Record high
- 72°22° (1999)
- Record low
- −23°−31° (2022)
- Heating degree days
- 1118
- Cooling degree days
- 0
Clinton in December
Highs average 29°−2° and lows 9°−13°, with 1.4 in36 mm of precipitation and 13 in34 cm of snow in a typical December.
- Record high
- 64°18° (2021)
- Record low
- −50°−46° (1983)
- Heating degree days
- 1429
- Cooling degree days
- 0