Arbon Valley weather by month
What a typical year looks like in Arbon Valley, Idaho: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Pocatello Regional Airport, 4 km from Arbon Valley; records cover 1939–2026.
The year at a glance
- Precipitation a year
- 11.8 in300 mm
- Snow a year
- 39 in98 cm
- Last spring freeze
- May 18
- First fall freeze
- Sep 11
- Heating degree days
- 6,958
- Cooling degree days
- 430
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −5°−21° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Arbon Valley in January
Highs average 34°1° and lows 17°−8°, with 1.1 in28 mm of precipitation and 9 in22 cm of snow in a typical January.
- Record high
- 61°16° (2018)
- Record low
- −31°−35° (1949)
- Heating degree days
- 1220
- Cooling degree days
- 0
Arbon Valley in February
Highs average 39°4° and lows 20°−6°, with 0.97 in25 mm of precipitation and 8 in19 cm of snow in a typical February.
- Record high
- 65°18° (1992)
- Record low
- −33°−36° (1985)
- Heating degree days
- 990
- Cooling degree days
- 0
Arbon Valley in March
Highs average 51°10° and lows 28°−2°, with 1.2 in31 mm of precipitation and 4 in10 cm of snow in a typical March.
- Record high
- 77°25° (2026)
- Record low
- −12°−24° (1985)
- Heating degree days
- 802
- Cooling degree days
- 0
Arbon Valley in April
Highs average 59°15° and lows 33°0°, with 1.2 in30 mm of precipitation and 2.6 in6.6 cm of snow in a typical April.
- Record high
- 86°30° (1946)
- Record low
- 12°−11° (1945)
- Heating degree days
- 579
- Cooling degree days
- 0
Arbon Valley in May
Highs average 69°20° and lows 40°4°, with 1.4 in36 mm of precipitation and 0.4 in1 cm of snow in a typical May.
- Record high
- 97°36° (2003)
- Record low
- 20°−7° (1972)
- Heating degree days
- 340
- Cooling degree days
- 5
Arbon Valley in June
Highs average 79°26° and lows 46°8°, with 0.93 in24 mm of precipitation in a typical June.
- Record high
- 103°39° (1940)
- Record low
- 28°−2° (1995)
- Heating degree days
- 129
- Cooling degree days
- 46
Arbon Valley in July
Highs average 89°32° and lows 52°11°, with 0.51 in13 mm of precipitation in a typical July.
- Record high
- 104°40° (2000)
- Record low
- 34°1° (1981)
- Heating degree days
- 16
- Cooling degree days
- 195
Arbon Valley in August
Highs average 88°31° and lows 51°10°, with 0.53 in13 mm of precipitation in a typical August.
- Record high
- 104°40° (1969)
- Record low
- 30°−1° (1992)
- Heating degree days
- 25
- Cooling degree days
- 158
Arbon Valley in September
Highs average 77°25° and lows 42°6°, with 0.89 in23 mm of precipitation in a typical September.
- Record high
- 102°39° (2022)
- Record low
- 19°−7° (1983)
- Heating degree days
- 186
- Cooling degree days
- 26
Arbon Valley in OctoberThis month
Highs average 62°16° and lows 33°0°, with 0.99 in25 mm of precipitation and 1.2 in3 cm of snow in a typical October.
- Record high
- 91°33° (1992)
- Record low
- −6°−21° (2019)
- Heating degree days
- 554
- Cooling degree days
- 0
Arbon Valley in November
Highs average 46°8° and lows 24°−5°, with 0.95 in24 mm of precipitation and 4 in10 cm of snow in a typical November.
- Record high
- 75°24° (1999)
- Record low
- −14°−26° (1993)
- Heating degree days
- 902
- Cooling degree days
- 0
Arbon Valley in December
Highs average 34°1° and lows 17°−8°, with 1.1 in29 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 64°18° (1995)
- Record low
- −29°−34° (1990)
- Heating degree days
- 1215
- Cooling degree days
- 0