Warm River weather by month
What a typical year looks like in Warm River, Idaho: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Ashton 1n, 12 km from Warm River; records cover 1897–2026.
The year at a glance
- Precipitation a year
- 19.7 in500 mm
- Snow a year
- 70 in178 cm
- Last spring freeze
- May 29
- First fall freeze
- Sep 14
- Heating degree days
- 8,041
- Cooling degree days
- 210
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −8°−22° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Warm River in January
Highs average 29°−2° and lows 13°−10°, with 2.3 in59 mm of precipitation and 20 in50 cm of snow in a typical January.
- Record high
- 54°12° (1899)
- Record low
- −35°−37° (1937)
- Heating degree days
- 1359
- Cooling degree days
- 0
Warm River in February
Highs average 33°0° and lows 17°−8°, with 1.5 in39 mm of precipitation and 11 in27 cm of snow in a typical February.
- Record high
- 61°16° (1963)
- Record low
- −37°−38° (1933)
- Heating degree days
- 1128
- Cooling degree days
- 0
Warm River in March
Highs average 42°6° and lows 25°−4°, with 1.3 in33 mm of precipitation and 5 in13 cm of snow in a typical March.
- Record high
- 74°23° (2026)
- Record low
- −30°−34° (1897)
- Heating degree days
- 980
- Cooling degree days
- 0
Warm River in April
Highs average 54°12° and lows 31°0°, with 1.7 in43 mm of precipitation and 2 in5.1 cm of snow in a typical April.
- Record high
- 88°31° (1939)
- Record low
- −3°−19° (1936)
- Heating degree days
- 672
- Cooling degree days
- 0
Warm River in May
Highs average 65°19° and lows 40°4°, with 2.2 in57 mm of precipitation in a typical May.
- Record high
- 90°32° (1936)
- Record low
- 6°−14° (1899)
- Heating degree days
- 390
- Cooling degree days
- 3
Warm River in June
Highs average 73°23° and lows 46°8°, with 2.2 in55 mm of precipitation in a typical June.
- Record high
- 98°37° (1936)
- Record low
- 18°−8° (1899)
- Heating degree days
- 189
- Cooling degree days
- 21
Warm River in July
Highs average 83°28° and lows 51°11°, with 0.64 in16 mm of precipitation in a typical July.
- Record high
- 101°38° (2007)
- Record low
- 24°−4° (1900)
- Heating degree days
- 45
- Cooling degree days
- 99
Warm River in August
Highs average 83°28° and lows 49°9°, with 0.85 in22 mm of precipitation in a typical August.
- Record high
- 99°37° (1907)
- Record low
- 20°−7° (1899)
- Heating degree days
- 57
- Cooling degree days
- 76
Warm River in September
Highs average 73°23° and lows 42°5°, with 1.2 in30 mm of precipitation in a typical September.
- Record high
- 95°35° (1950)
- Record low
- 10°−12° (1898)
- Heating degree days
- 246
- Cooling degree days
- 11
Warm River in OctoberThis month
Highs average 57°14° and lows 32°0°, with 1.6 in41 mm of precipitation and 1.6 in4.1 cm of snow in a typical October.
- Record high
- 85°29° (1957)
- Record low
- −7°−22° (2002)
- Heating degree days
- 631
- Cooling degree days
- 0
Warm River in November
Highs average 40°5° and lows 23°−5°, with 1.9 in48 mm of precipitation and 11 in27 cm of snow in a typical November.
- Record high
- 74°23° (1904)
- Record low
- −18°−28° (1916)
- Heating degree days
- 1008
- Cooling degree days
- 0
Warm River in December
Highs average 29°−2° and lows 15°−10°, with 2.3 in57 mm of precipitation and 20 in51 cm of snow in a typical December.
- Record high
- 60°16° (1902)
- Record low
- −36°−38° (1924)
- Heating degree days
- 1336
- Cooling degree days
- 0