Dubois weather by month
What a typical year looks like in Dubois, Idaho: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Dubois Experiment Station, 8 km from Dubois; records cover 1925–2026.
The year at a glance
- Precipitation a year
- 12.2 in311 mm
- Snow a year
- 47 in120 cm
- Last spring freeze
- May 30
- First fall freeze
- Sep 22
- Heating degree days
- 7,577
- Cooling degree days
- 432
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Dubois in January
Highs average 30°−1° and lows 15°−9°, with 0.78 in20 mm of precipitation and 10 in26 cm of snow in a typical January.
- Record high
- 53°12° (1981)
- Record low
- −28°−33° (1937)
- Heating degree days
- 1327
- Cooling degree days
- 0
Dubois in February
Highs average 33°1° and lows 18°−8°, with 0.64 in16 mm of precipitation and 8 in19 cm of snow in a typical February.
- Record high
- 58°14° (1963)
- Record low
- −27°−33° (1989)
- Heating degree days
- 1110
- Cooling degree days
- 0
Dubois in March
Highs average 44°7° and lows 26°−4°, with 0.81 in21 mm of precipitation and 5 in11 cm of snow in a typical March.
- Record high
- 76°24° (2026)
- Record low
- −13°−25° (1955)
- Heating degree days
- 930
- Cooling degree days
- 0
Dubois in April
Highs average 57°14° and lows 33°0°, with 1.3 in33 mm of precipitation and 3 in8 cm of snow in a typical April.
- Record high
- 82°28° (1927)
- Record low
- 0°−18° (1936)
- Heating degree days
- 606
- Cooling degree days
- 0
Dubois in May
Highs average 67°19° and lows 41°5°, with 2 in52 mm of precipitation and 0.5 in1.3 cm of snow in a typical May.
- Record high
- 92°33° (2003)
- Record low
- 15°−9° (1929)
- Heating degree days
- 356
- Cooling degree days
- 4
Dubois in June
Highs average 76°25° and lows 47°8°, with 1.6 in40 mm of precipitation and 0.1 in0.3 cm of snow in a typical June.
- Record high
- 100°38° (1926)
- Record low
- 22°−6° (1926)
- Heating degree days
- 142
- Cooling degree days
- 45
Dubois in July
Highs average 87°30° and lows 55°13°, with 0.68 in17 mm of precipitation in a typical July.
- Record high
- 103°39° (2002)
- Record low
- 30°−1° (1929)
- Heating degree days
- 21
- Cooling degree days
- 197
Dubois in August
Highs average 85°30° and lows 53°12°, with 0.73 in19 mm of precipitation in a typical August.
- Record high
- 101°38° (2003)
- Record low
- 30°−1° (1925)
- Heating degree days
- 26
- Cooling degree days
- 158
Dubois in September
Highs average 75°24° and lows 45°7°, with 0.89 in23 mm of precipitation in a typical September.
- Record high
- 95°35° (1950)
- Record low
- 2°−17° (1926)
- Heating degree days
- 187
- Cooling degree days
- 28
Dubois in OctoberThis month
Highs average 58°15° and lows 34°1°, with 1.1 in28 mm of precipitation and 1.4 in3.6 cm of snow in a typical October.
- Record high
- 84°29° (1934)
- Record low
- 0°−18° (2019)
- Heating degree days
- 583
- Cooling degree days
- 0
Dubois in November
Highs average 41°5° and lows 24°−5°, with 0.71 in18 mm of precipitation and 6 in16 cm of snow in a typical November.
- Record high
- 69°21° (1930)
- Record low
- −15°−26° (1955)
- Heating degree days
- 976
- Cooling degree days
- 0
Dubois in December
Highs average 30°−1° and lows 16°−9°, with 0.99 in25 mm of precipitation and 14 in35 cm of snow in a typical December.
- Record high
- 54°12° (1939)
- Record low
- −31°−35° (1990)
- Heating degree days
- 1313
- Cooling degree days
- 0