Cottonwood Lake Weather Forecast
- 65
- 97
Chance Thunderstorms
- 57
- 83
Rain Showers Likely
- 61
- 87
Mostly Sunny
- 67
- 90
Breezy
- 64
- 96
Chance Thunderstorms
- 55
- 82
Mostly Sunny
Today 29 Jul McHenry
Sunny. Patchy smoke. Highs in the mid 90s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.
Tonight 29 Jul McHenry
Mostly cloudy with a chance of Showers and Thunderstorms. Lows in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest 5 to 10 Mph after midnight. Chance of rain 30 percent.
Cottonwood Lake Temperature Statistics
July Temperature
Harvey Municipal Airport (34.8 miles)
Lowest 22 July, 2026
50 °FAverage July
73 °FHighest 26 July, 2026
100.4 °F
Climate (2021–2026)
Harvey Municipal Airport (34.8 miles)
Average Low 2021–2026
30.3 °FAverage 2021–2026
41.2 °FAverage High 2021–2026
51.8 °F