Hebgen Lake Estates weather by month
What a typical year looks like in Hebgen Lake Estates, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Hebgen Dam, 16 km from Hebgen Lake Estates; records cover 1904–2026.
The year at a glance
- Precipitation a year
- 28.6 in727 mm
- Snow a year
- 177 in450 cm
- Last spring freeze
- Jun 15
- First fall freeze
- Sep 6
- Heating degree days
- 10,200
- Cooling degree days
- 31
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 87°31° (cooling, 1%).
Month by month
Hebgen Lake Estates in January
Highs average 23°−5° and lows 4°−16°, with 3.1 in78 mm of precipitation and 44 in111 cm of snow in a typical January.
- Record high
- 45°7° (1915)
- Record low
- −47°−44° (1937)
- Heating degree days
- 1606
- Cooling degree days
- 0
Hebgen Lake Estates in February
Highs average 28°−2° and lows 5°−15°, with 2.8 in70 mm of precipitation and 34 in86 cm of snow in a typical February.
- Record high
- 49°9° (1916)
- Record low
- −60°−51° (1905)
- Heating degree days
- 1358
- Cooling degree days
- 0
Hebgen Lake Estates in March
Highs average 38°4° and lows 14°−10°, with 2.2 in55 mm of precipitation and 21 in52 cm of snow in a typical March.
- Record high
- 65°18° (2026)
- Record low
- −38°−39° (1917)
- Heating degree days
- 1206
- Cooling degree days
- 0
Hebgen Lake Estates in April
Highs average 47°8° and lows 23°−5°, with 2.3 in58 mm of precipitation and 8 in20 cm of snow in a typical April.
- Record high
- 75°24° (1910)
- Record low
- −20°−29° (1936)
- Heating degree days
- 898
- Cooling degree days
- 0
Hebgen Lake Estates in May
Highs average 58°15° and lows 32°0°, with 3.1 in80 mm of precipitation and 1.2 in3 cm of snow in a typical May.
- Record high
- 88°31° (1986)
- Record low
- 8°−13° (1954)
- Heating degree days
- 609
- Cooling degree days
- 0
Hebgen Lake Estates in June
Highs average 68°20° and lows 39°4°, with 3 in76 mm of precipitation in a typical June.
- Record high
- 96°36° (1940)
- Record low
- 19°−7° (1924)
- Heating degree days
- 342
- Cooling degree days
- 1
Hebgen Lake Estates in July
Highs average 79°26° and lows 45°7°, with 1.6 in41 mm of precipitation in a typical July.
- Record high
- 98°37° (1917)
- Record low
- 25°−4° (1904)
- Heating degree days
- 123
- Cooling degree days
- 19
Hebgen Lake Estates in August
Highs average 78°26° and lows 43°6°, with 1.4 in35 mm of precipitation in a typical August.
- Record high
- 94°34° (2003)
- Record low
- 12°−11° (1910)
- Heating degree days
- 144
- Cooling degree days
- 10
Hebgen Lake Estates in September
Highs average 68°20° and lows 37°3°, with 1.6 in40 mm of precipitation in a typical September.
- Record high
- 93°34° (1917)
- Record low
- 6°−14° (1926)
- Heating degree days
- 377
- Cooling degree days
- 1
Hebgen Lake Estates in OctoberThis month
Highs average 51°10° and lows 28°−2°, with 2.1 in53 mm of precipitation and 4 in10 cm of snow in a typical October.
- Record high
- 82°28° (2010)
- Record low
- −9°−23° (1906)
- Heating degree days
- 792
- Cooling degree days
- 0
Hebgen Lake Estates in November
Highs average 34°1° and lows 18°−8°, with 2.5 in63 mm of precipitation and 21 in53 cm of snow in a typical November.
- Record high
- 62°17° (2020)
- Record low
- −35°−37° (1911)
- Heating degree days
- 1172
- Cooling degree days
- 0
Hebgen Lake Estates in December
Highs average 23°−5° and lows 6°−15°, with 3.1 in78 mm of precipitation and 45 in115 cm of snow in a typical December.
- Record high
- 51°11° (2014)
- Record low
- −43°−42° (1924)
- Heating degree days
- 1573
- Cooling degree days
- 0