Clear Lake Weather Forecast
- 72
- 84
Mostly Cloudy
- 74
- 89
Partly Sunny
- 75
- 93
Mostly Sunny
- 73
- 93
Chance Thunderstorms
- 72
- 88
Chance Thunderstorms
- 72
- 88
Chance Thunderstorms
- 72
- 90
Slight Chance Thunderstorms
Today 21 Jul Sangamon
Partly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 80s. East Winds around 5 Mph. Chance of rain 20 percent.
Tonight 21 Jul Sangamon
Mostly cloudy in the Evening, then partly cloudy with isolated Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent.
Clear Lake Temperature Statistics
July Temperature
Springfield - Abraham Lincoln Capital Airport (6.2 miles)
Lowest 2 July, 2025
62.7 °FAverage July
77.6 °FHighest 11 July, 2025
92.6 °F
Climate (2020–Present)
Springfield - Abraham Lincoln Capital Airport (6.2 miles)
Average Low 2020–2025
44.8 °FAverage 2020–2025
55 °FAverage High 2020–2025
64.9 °F