Johnsburg Weather Forecast
- 62
- 77
Rain Showers
- 63
- 82
Chance Rain Showers
- 72
- 84
Slight Chance Thunderstorms
- 75
- 94
Mostly Sunny
- 76
- 95
Mostly Sunny
- 73
- 95
Slight Chance Thunderstorms
- 66
- 91
Chance Thunderstorms
Today 18 Jun McHenry
Cloudy. A chance of Showers and Thunderstorms early to mid Afternoon, then Showers and Thunderstorms in the afternoon. Locally heavy rainfall possible in the afternoon. Highs in the upper 70s. North Winds around 5 Mph, becoming east in the afternoon. Chance of precipitation 90 percent.
Tonight 18 Jun McHenry
Cloudy. Showers likely late in the Evening, then a chance of Showers after midnight. Lows in the lower 60s. Northwest Winds 5 to 10 Mph. Chance of precipitation 70 percent.
Johnsburg Temperature Statistics
June Temperature
Chicago/Waukegan Regional Airport (19.3 miles)
Lowest 1 June, 2025
38.6 °FAverage June
64.7 °FHighest 11 June, 2025
91.7 °F
Climate (2020–Present)
Chicago/Waukegan Regional Airport (19.3 miles)
Average Low 2020–2025
42.2 °FAverage 2020–2025
50.9 °FAverage High 2020–2025
59.4 °F