Winslow weather by month
What a typical year looks like in Winslow, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Stockton 3nne, 19 km from Winslow; records cover 1943–2026.
The year at a glance
- Precipitation a year
- 38.7 in982 mm
- Snow a year
- 36 in91 cm
- Last spring freeze
- Apr 27
- First fall freeze
- Oct 6
- Heating degree days
- 6,867
- Cooling degree days
- 654
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Winslow in January
Highs average 28°−2° and lows 12°−11°, with 1.2 in30 mm of precipitation and 11 in27 cm of snow in a typical January.
- Record high
- 61°16° (2002)
- Record low
- −32°−36° (2019)
- Heating degree days
- 1396
- Cooling degree days
- 0
Winslow in February
Highs average 32°0° and lows 16°−9°, with 1.5 in39 mm of precipitation and 8 in21 cm of snow in a typical February.
- Record high
- 73°23° (2024)
- Record low
- −30°−34° (1996)
- Heating degree days
- 1149
- Cooling degree days
- 0
Winslow in March
Highs average 45°7° and lows 27°−3°, with 2.2 in56 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 84°29° (1986)
- Record low
- −18°−28° (1962)
- Heating degree days
- 901
- Cooling degree days
- 1
Winslow in April
Highs average 59°15° and lows 37°3°, with 3.9 in100 mm of precipitation and 1.3 in3.3 cm of snow in a typical April.
- Record high
- 91°33° (1980)
- Record low
- 7°−14° (1982)
- Heating degree days
- 516
- Cooling degree days
- 5
Winslow in May
Highs average 71°22° and lows 49°9°, with 4.1 in105 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 97°36° (2022)
- Record low
- 24°−4° (1978)
- Heating degree days
- 210
- Cooling degree days
- 50
Winslow in June
Highs average 79°26° and lows 59°15°, with 5.7 in145 mm of precipitation in a typical June.
- Record high
- 99°37° (1988)
- Record low
- 37°3° (1945)
- Heating degree days
- 33
- Cooling degree days
- 153
Winslow in July
Highs average 82°28° and lows 61°16°, with 4.5 in114 mm of precipitation in a typical July.
- Record high
- 99°37° (1963)
- Record low
- 40°4° (1988)
- Heating degree days
- 9
- Cooling degree days
- 211
Winslow in August
Highs average 80°27° and lows 59°15°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 99°37° (1988)
- Record low
- 39°4° (1979)
- Heating degree days
- 19
- Cooling degree days
- 160
Winslow in September
Highs average 74°23° and lows 51°11°, with 4.2 in107 mm of precipitation in a typical September.
- Record high
- 98°37° (1953)
- Record low
- 26°−3° (1949)
- Heating degree days
- 134
- Cooling degree days
- 66
Winslow in OctoberThis month
Highs average 62°16° and lows 40°5°, with 3.1 in79 mm of precipitation and 0.5 in1.3 cm of snow in a typical October.
- Record high
- 89°32° (1953)
- Record low
- 13°−11° (1988)
- Heating degree days
- 447
- Cooling degree days
- 8
Winslow in November
Highs average 46°8° and lows 29°−2°, with 2.3 in59 mm of precipitation and 2.1 in5.3 cm of snow in a typical November.
- Record high
- 77°25° (2000)
- Record low
- −10°−23° (1950)
- Heating degree days
- 830
- Cooling degree days
- 0
Winslow in December
Highs average 33°1° and lows 18°−8°, with 1.7 in43 mm of precipitation and 8 in20 cm of snow in a typical December.
- Record high
- 69°21° (2021)
- Record low
- −24°−31° (1983)
- Heating degree days
- 1223
- Cooling degree days
- 0