Donnelly weather by month
What a typical year looks like in Donnelly, Idaho: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mccall, 17 km from Donnelly; records cover 1906–2026.
The year at a glance
- Precipitation a year
- 25 in634 mm
- Snow a year
- 132 in336 cm
- Last spring freeze
- Jun 23
- First fall freeze
- Sep 2
- Heating degree days
- 8,734
- Cooling degree days
- 95
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Donnelly in January
Highs average 31°0° and lows 13°−11°, with 2.9 in74 mm of precipitation and 35 in89 cm of snow in a typical January.
- Record high
- 53°12° (2024)
- Record low
- −35°−37° (1943)
- Heating degree days
- 1333
- Cooling degree days
- 0
Donnelly in February
Highs average 36°2° and lows 15°−10°, with 2.3 in58 mm of precipitation and 24 in61 cm of snow in a typical February.
- Record high
- 59°15° (1924)
- Record low
- −33°−36° (1933)
- Heating degree days
- 1114
- Cooling degree days
- 0
Donnelly in March
Highs average 43°6° and lows 21°−6°, with 2.7 in69 mm of precipitation and 16 in39 cm of snow in a typical March.
- Record high
- 71°22° (2026)
- Record low
- −22°−30° (1955)
- Heating degree days
- 1035
- Cooling degree days
- 0
Donnelly in April
Highs average 51°10° and lows 27°−3°, with 2.2 in55 mm of precipitation and 4 in11 cm of snow in a typical April.
- Record high
- 84°29° (1910)
- Record low
- −17°−27° (1936)
- Heating degree days
- 784
- Cooling degree days
- 0
Donnelly in May
Highs average 61°16° and lows 35°2°, with 2.4 in61 mm of precipitation and 0.4 in1 cm of snow in a typical May.
- Record high
- 90°32° (1910)
- Record low
- 14°−10° (1922)
- Heating degree days
- 523
- Cooling degree days
- 0
Donnelly in June
Highs average 70°21° and lows 40°4°, with 2.1 in54 mm of precipitation and 0.2 in0.5 cm of snow in a typical June.
- Record high
- 98°37° (2015)
- Record low
- 20°−7° (1926)
- Heating degree days
- 312
- Cooling degree days
- 6
Donnelly in July
Highs average 81°27° and lows 45°7°, with 0.59 in15 mm of precipitation in a typical July.
- Record high
- 102°39° (1928)
- Record low
- 22°−6° (1986)
- Heating degree days
- 105
- Cooling degree days
- 49
Donnelly in August
Highs average 81°27° and lows 43°6°, with 0.55 in14 mm of precipitation in a typical August.
- Record high
- 104°40° (1928)
- Record low
- 20°−7° (1992)
- Heating degree days
- 118
- Cooling degree days
- 36
Donnelly in September
Highs average 72°22° and lows 36°2°, with 1.1 in28 mm of precipitation in a typical September.
- Record high
- 95°35° (2017)
- Record low
- 9°−13° (1909)
- Heating degree days
- 341
- Cooling degree days
- 4
Donnelly in OctoberThis month
Highs average 57°14° and lows 28°−2°, with 1.8 in46 mm of precipitation and 2.1 in5.3 cm of snow in a typical October.
- Record high
- 86°30° (2010)
- Record low
- 1°−17° (1919)
- Heating degree days
- 698
- Cooling degree days
- 0
Donnelly in November
Highs average 40°5° and lows 21°−6°, with 2.8 in71 mm of precipitation and 17 in44 cm of snow in a typical November.
- Record high
- 68°20° (1988)
- Record low
- −17°−27° (2010)
- Heating degree days
- 1034
- Cooling degree days
- 0
Donnelly in December
Highs average 30°−1° and lows 13°−10°, with 3.5 in88 mm of precipitation and 34 in85 cm of snow in a typical December.
- Record high
- 58°14° (1939)
- Record low
- −31°−35° (1919)
- Heating degree days
- 1337
- Cooling degree days
- 0