Hardin weather by month
What a typical year looks like in Hardin, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Hardin, 1 km from Hardin; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 13.7 in349 mm
- Snow a year
- 28 in71 cm
- Last spring freeze
- May 10
- First fall freeze
- Oct 4
- Heating degree days
- 6,896
- Cooling degree days
- 631
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −16°−27° (heating, 99%) and 102°39° (cooling, 1%).
Month by month
Hardin in January
Highs average 36°2° and lows 11°−12°, with 0.5 in13 mm of precipitation and 6 in15 cm of snow in a typical January.
- Record high
- 70°21° (2005)
- Record low
- −43°−42° (1982)
- Heating degree days
- 1282
- Cooling degree days
- 0
Hardin in February
Highs average 41°5° and lows 15°−10°, with 0.55 in14 mm of precipitation and 6 in16 cm of snow in a typical February.
- Record high
- 74°23° (1982)
- Record low
- −38°−39° (1949)
- Heating degree days
- 1041
- Cooling degree days
- 0
Hardin in March
Highs average 53°12° and lows 23°−5°, with 0.89 in23 mm of precipitation and 3 in9 cm of snow in a typical March.
- Record high
- 85°29° (2026)
- Record low
- −30°−34° (2019)
- Heating degree days
- 839
- Cooling degree days
- 0
Hardin in April
Highs average 62°17° and lows 32°0°, with 1.5 in38 mm of precipitation and 1.3 in3.3 cm of snow in a typical April.
- Record high
- 96°36° (1987)
- Record low
- −1°−18° (2022)
- Heating degree days
- 542
- Cooling degree days
- 0
Hardin in May
Highs average 71°22° and lows 41°5°, with 2.5 in64 mm of precipitation in a typical May.
- Record high
- 97°36° (1960)
- Record low
- 15°−9° (1953)
- Heating degree days
- 283
- Cooling degree days
- 13
Hardin in June
Highs average 81°27° and lows 50°10°, with 1.9 in49 mm of precipitation in a typical June.
- Record high
- 106°41° (1988)
- Record low
- 30°−1° (1951)
- Heating degree days
- 76
- Cooling degree days
- 86
Hardin in July
Highs average 91°33° and lows 56°13°, with 1.3 in33 mm of precipitation in a typical July.
- Record high
- 112°44° (2002)
- Record low
- 34°1° (1969)
- Heating degree days
- 10
- Cooling degree days
- 260
Hardin in August
Highs average 90°32° and lows 53°12°, with 0.86 in22 mm of precipitation in a typical August.
- Record high
- 109°43° (1952)
- Record low
- 30°−1° (1985)
- Heating degree days
- 19
- Cooling degree days
- 220
Hardin in September
Highs average 79°26° and lows 44°7°, with 1.4 in35 mm of precipitation in a typical September.
- Record high
- 105°41° (2022)
- Record low
- 15°−9° (1984)
- Heating degree days
- 152
- Cooling degree days
- 50
Hardin in OctoberThis month
Highs average 64°18° and lows 33°0°, with 1.4 in35 mm of precipitation and 1.6 in4.1 cm of snow in a typical October.
- Record high
- 94°34° (1963)
- Record low
- −14°−26° (1991)
- Heating degree days
- 523
- Cooling degree days
- 2
Hardin in November
Highs average 48°9° and lows 22°−6°, with 0.52 in13 mm of precipitation and 3 in8 cm of snow in a typical November.
- Record high
- 81°27° (1999)
- Record low
- −31°−35° (1959)
- Heating degree days
- 903
- Cooling degree days
- 0
Hardin in December
Highs average 38°3° and lows 13°−11°, with 0.49 in12 mm of precipitation and 6 in16 cm of snow in a typical December.
- Record high
- 72°22° (2021)
- Record low
- −47°−44° (1989)
- Heating degree days
- 1226
- Cooling degree days
- 0