Riggins weather by month
What a typical year looks like in Riggins, Idaho: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Riggins, 10 km from Riggins; records cover 1896–2026.
The year at a glance
- Precipitation a year
- 17.4 in443 mm
- Snow a year
- 7 in18 cm
- Last spring freeze
- Apr 18
- First fall freeze
- Oct 25
- Heating degree days
- 5,907
- Cooling degree days
- 552
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 15°−9° (heating, 99%) and 104°40° (cooling, 1%).
Month by month
Riggins in January
Highs average 41°5° and lows 25°−4°, with 1.3 in33 mm of precipitation and 2.1 in5.3 cm of snow in a typical January.
- Record high
- 70°21° (2024)
- Record low
- −10°−23° (1957)
- Heating degree days
- 1006
- Cooling degree days
- 0
Riggins in February
Highs average 46°8° and lows 26°−4°, with 1.4 in36 mm of precipitation and 2.3 in5.8 cm of snow in a typical February.
- Record high
- 72°22° (1977)
- Record low
- −8°−22° (1899)
- Heating degree days
- 815
- Cooling degree days
- 0
Riggins in March
Highs average 55°13° and lows 30°−1°, with 1.8 in46 mm of precipitation and 0.1 in0.3 cm of snow in a typical March.
- Record high
- 83°28° (1960)
- Record low
- 3°−16° (1896)
- Heating degree days
- 694
- Cooling degree days
- 0
Riggins in April
Highs average 62°17° and lows 35°1°, with 2 in52 mm of precipitation in a typical April.
- Record high
- 95°35° (1977)
- Record low
- 18°−8° (1972)
- Heating degree days
- 500
- Cooling degree days
- 1
Riggins in May
Highs average 71°22° and lows 41°5°, with 2.2 in55 mm of precipitation in a typical May.
- Record high
- 103°39° (2003)
- Record low
- 25°−4° (1982)
- Heating degree days
- 297
- Cooling degree days
- 15
Riggins in June
Highs average 78°25° and lows 47°8°, with 1.7 in44 mm of precipitation in a typical June.
- Record high
- 108°42° (1940)
- Record low
- 22°−6° (1897)
- Heating degree days
- 133
- Cooling degree days
- 52
Riggins in July
Highs average 90°32° and lows 52°11°, with 0.76 in19 mm of precipitation in a typical July.
- Record high
- 113°45° (2002)
- Record low
- 36°2° (1968)
- Heating degree days
- 24
- Cooling degree days
- 213
Riggins in August
Highs average 90°32° and lows 52°11°, with 0.73 in19 mm of precipitation in a typical August.
- Record high
- 115°46° (1967)
- Record low
- 36°2° (1992)
- Heating degree days
- 21
- Cooling degree days
- 209
Riggins in September
Highs average 80°26° and lows 45°7°, with 1.2 in29 mm of precipitation in a typical September.
- Record high
- 110°43° (1950)
- Record low
- 20°−7° (1984)
- Heating degree days
- 137
- Cooling degree days
- 60
Riggins in OctoberThis month
Highs average 64°18° and lows 36°2°, with 1.5 in38 mm of precipitation in a typical October.
- Record high
- 95°35° (1963)
- Record low
- 11°−12° (2019)
- Heating degree days
- 471
- Cooling degree days
- 2
Riggins in November
Highs average 48°9° and lows 29°−2°, with 1.4 in36 mm of precipitation and 0.6 in1.5 cm of snow in a typical November.
- Record high
- 80°27° (1999)
- Record low
- −2°−19° (1896)
- Heating degree days
- 788
- Cooling degree days
- 0
Riggins in December
Highs average 40°4° and lows 25°−4°, with 1.4 in37 mm of precipitation and 2 in5.1 cm of snow in a typical December.
- Record high
- 69°21° (1939)
- Record low
- −8°−22° (1964)
- Heating degree days
- 1021
- Cooling degree days
- 0