Iola weather by month
What a typical year looks like in Iola, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Rosholt, 20 km from Iola; records cover 1941–2026.
The year at a glance
- Precipitation a year
- 34 in862 mm
- Snow a year
- Rare
- Last spring freeze
- May 18
- First fall freeze
- Sep 28
- Heating degree days
- 7,981
- Cooling degree days
- 456
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −18°−28° (heating, 99%) and 90°32° (cooling, 1%).
Month by month
Iola in January
Highs average 24°−5° and lows 7°−14°, with 1.2 in31 mm of precipitation in a typical January.
- Record high
- 53°12° (1996)
- Record low
- −41° (1982)
- Heating degree days
- 1542
- Cooling degree days
- 0
Iola in February
Highs average 28°−2° and lows 9°−13°, with 1.1 in27 mm of precipitation in a typical February.
- Record high
- 70°21° (2024)
- Record low
- −38°−39° (1996)
- Heating degree days
- 1293
- Cooling degree days
- 0
Iola in March
Highs average 40°5° and lows 21°−6°, with 1.7 in44 mm of precipitation in a typical March.
- Record high
- 79°26° (2012)
- Record low
- −33°−36° (1962)
- Heating degree days
- 1071
- Cooling degree days
- 0
Iola in April
Highs average 54°12° and lows 33°1°, with 3.2 in81 mm of precipitation in a typical April.
- Record high
- 89°32° (1952)
- Record low
- 2°−17° (1982)
- Heating degree days
- 645
- Cooling degree days
- 1
Iola in May
Highs average 67°20° and lows 45°7°, with 4 in102 mm of precipitation in a typical May.
- Record high
- 94°34° (2018)
- Record low
- 15°−9° (1980)
- Heating degree days
- 296
- Cooling degree days
- 25
Iola in June
Highs average 77°25° and lows 55°13°, with 4.5 in114 mm of precipitation in a typical June.
- Record high
- 98°37° (1963)
- Record low
- 26°−3° (1980)
- Heating degree days
- 75
- Cooling degree days
- 93
Iola in July
Highs average 81°27° and lows 58°15°, with 3.8 in95 mm of precipitation in a typical July.
- Record high
- 103°39° (1995)
- Record low
- 35°2° (1988)
- Heating degree days
- 22
- Cooling degree days
- 165
Iola in August
Highs average 79°26° and lows 57°14°, with 4 in102 mm of precipitation in a typical August.
- Record high
- 100°38° (1948)
- Record low
- 26°−3° (1986)
- Heating degree days
- 35
- Cooling degree days
- 125
Iola in September
Highs average 71°22° and lows 49°10°, with 3.8 in98 mm of precipitation in a typical September.
- Record high
- 100°38° (2023)
- Record low
- 19°−7° (1989)
- Heating degree days
- 187
- Cooling degree days
- 44
Iola in OctoberThis month
Highs average 57°14° and lows 37°3°, with 3 in76 mm of precipitation in a typical October.
- Record high
- 90°32° (1976)
- Record low
- 7°−14° (1989)
- Heating degree days
- 549
- Cooling degree days
- 3
Iola in November
Highs average 42°5° and lows 26°−3°, with 2.1 in52 mm of precipitation in a typical November.
- Record high
- 73°23° (1990)
- Record low
- −14°−26° (1950)
- Heating degree days
- 930
- Cooling degree days
- 0
Iola in December
Highs average 29°−2° and lows 15°−10°, with 1.6 in41 mm of precipitation in a typical December.
- Record high
- 65°18° (1994)
- Record low
- −35°−37° (1989)
- Heating degree days
- 1336
- Cooling degree days
- 0