Gallatin River Ranch weather by month
What a typical year looks like in Gallatin River Ranch, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at BOZEMAN GALLATIN FIELD AP, 18 km from Gallatin River Ranch; records cover 1941–2026.
The year at a glance
- Precipitation a year
- 13.4 in341 mm
- Snow a year
- Rare
- Last spring freeze
- May 31
- First fall freeze
- Sep 9
- Heating degree days
- 8,246
- 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 −19°−28° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Gallatin River Ranch in January
Highs average 32°0° and lows 10°−12°, with 0.44 in11 mm of precipitation in a typical January.
- Record high
- 60°16° (1953)
- Record low
- −46°−43° (1957)
- Heating degree days
- 1358
- Cooling degree days
- 0
Gallatin River Ranch in February
Highs average 36°2° and lows 13°−11°, with 0.42 in11 mm of precipitation in a typical February.
- Record high
- 66°19° (1995)
- Record low
- −43°−42° (1989)
- Heating degree days
- 1144
- Cooling degree days
- 0
Gallatin River Ranch in March
Highs average 46°8° and lows 22°−6°, with 0.93 in24 mm of precipitation in a typical March.
- Record high
- 79°26° (2026)
- Record low
- −39° (2019)
- Heating degree days
- 961
- Cooling degree days
- 0
Gallatin River Ranch in April
Highs average 55°13° and lows 29°−2°, with 1.7 in43 mm of precipitation in a typical April.
- Record high
- 86°30° (1962)
- Record low
- −5°−21° (1970)
- Heating degree days
- 684
- Cooling degree days
- 0
Gallatin River Ranch in May
Highs average 65°18° and lows 38°3°, with 2.1 in54 mm of precipitation in a typical May.
- Record high
- 92°33° (1954)
- Record low
- 14°−10° (2002)
- Heating degree days
- 426
- Cooling degree days
- 1
Gallatin River Ranch in June
Highs average 74°23° and lows 44°7°, with 2.5 in65 mm of precipitation in a typical June.
- Record high
- 100°38° (1990)
- Record low
- 26°−3° (1951)
- Heating degree days
- 198
- Cooling degree days
- 17
Gallatin River Ranch in July
Highs average 85°30° and lows 49°10°, with 1.1 in27 mm of precipitation in a typical July.
- Record high
- 106°41° (2007)
- Record low
- 30°−1° (1944)
- Heating degree days
- 42
- Cooling degree days
- 117
Gallatin River Ranch in August
Highs average 84°29° and lows 47°9°, with 0.94 in24 mm of precipitation in a typical August.
- Record high
- 103°39° (1961)
- Record low
- 27°−3° (1992)
- Heating degree days
- 64
- Cooling degree days
- 87
Gallatin River Ranch in September
Highs average 73°23° and lows 40°4°, with 1 in25 mm of precipitation in a typical September.
- Record high
- 100°38° (2020)
- Record low
- 15°−9° (1985)
- Heating degree days
- 274
- Cooling degree days
- 11
Gallatin River Ranch in OctoberThis month
Highs average 58°14° and lows 29°−1°, with 1.1 in28 mm of precipitation in a typical October.
- Record high
- 89°32° (2010)
- Record low
- −20°−29° (2020)
- Heating degree days
- 670
- Cooling degree days
- 0
Gallatin River Ranch in November
Highs average 42°5° and lows 18°−8°, with 0.74 in19 mm of precipitation in a typical November.
- Record high
- 76°24° (2009)
- Record low
- −36°−38° (1959)
- Heating degree days
- 1052
- Cooling degree days
- 0
Gallatin River Ranch in December
Highs average 32°0° and lows 10°−12°, with 0.44 in11 mm of precipitation in a typical December.
- Record high
- 66°19° (2021)
- Record low
- −46°−43° (1983)
- Heating degree days
- 1373
- Cooling degree days
- 0