Rexburg weather by month
What a typical year looks like in Rexburg, Idaho: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Saint Anthony, 17 km from Rexburg; records cover 1895–2026.
The year at a glance
- Precipitation a year
- 14.8 in376 mm
- Snow a year
- Rare
- Last spring freeze
- Jun 4
- First fall freeze
- Sep 8
- Heating degree days
- 8,168
- Cooling degree days
- 215
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −13°−25° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Rexburg in January
Highs average 28°−2° and lows 12°−11°, with 1.7 in42 mm of precipitation in a typical January.
- Record high
- 52°11° (1981)
- Record low
- −33°−36° (1963)
- Heating degree days
- 1403
- Cooling degree days
- 0
Rexburg in February
Highs average 32°0° and lows 14°−10°, with 0.89 in23 mm of precipitation in a typical February.
- Record high
- 60°16° (1963)
- Record low
- −34°−37° (1985)
- Heating degree days
- 1170
- Cooling degree days
- 0
Rexburg in March
Highs average 44°6° and lows 23°−5°, with 1.1 in27 mm of precipitation in a typical March.
- Record high
- 76°24° (2026)
- Record low
- −21°−29° (1993)
- Heating degree days
- 984
- Cooling degree days
- 0
Rexburg in April
Highs average 55°13° and lows 31°−1°, with 1.3 in34 mm of precipitation in a typical April.
- Record high
- 85°29° (1987)
- Record low
- 1°−17° (1975)
- Heating degree days
- 660
- Cooling degree days
- 0
Rexburg in May
Highs average 65°18° and lows 39°4°, with 2 in50 mm of precipitation in a typical May.
- Record high
- 90°32° (2003)
- Record low
- 14°−10° (1984)
- Heating degree days
- 406
- Cooling degree days
- 1
Rexburg in June
Highs average 73°23° and lows 45°7°, with 1.7 in44 mm of precipitation in a typical June.
- Record high
- 100°38° (1988)
- Record low
- 23°−5° (1951)
- Heating degree days
- 192
- Cooling degree days
- 21
Rexburg in July
Highs average 83°29° and lows 50°10°, with 0.71 in18 mm of precipitation in a typical July.
- Record high
- 98°37° (1946)
- Record low
- 23°−5° (1895)
- Heating degree days
- 45
- Cooling degree days
- 104
Rexburg in August
Highs average 83°28° and lows 49°9°, with 0.62 in16 mm of precipitation in a typical August.
- Record high
- 98°37° (1990)
- Record low
- 22°−6° (1992)
- Heating degree days
- 56
- Cooling degree days
- 78
Rexburg in September
Highs average 73°23° and lows 41°5°, with 1.1 in27 mm of precipitation in a typical September.
- Record high
- 95°35° (1948)
- Record low
- 13°−11° (1895)
- Heating degree days
- 256
- Cooling degree days
- 11
Rexburg in OctoberThis month
Highs average 58°14° and lows 32°0°, with 1.3 in33 mm of precipitation in a typical October.
- Record high
- 86°30° (1992)
- Record low
- 1°−17° (2019)
- Heating degree days
- 631
- Cooling degree days
- 0
Rexburg in November
Highs average 41°5° and lows 22°−6°, with 1.1 in28 mm of precipitation in a typical November.
- Record high
- 77°25° (1949)
- Record low
- −21°−29° (1993)
- Heating degree days
- 1004
- Cooling degree days
- 0
Rexburg in December
Highs average 29°−2° and lows 13°−10°, with 1.4 in36 mm of precipitation in a typical December.
- Record high
- 65°18° (1989)
- Record low
- −40° (1990)
- Heating degree days
- 1361
- Cooling degree days
- 0