Grantsburg Weather Forecast
- 55
- 80
Mostly Sunny
- 63
- 81
Rain Showers Likely
- 59
- 77
Rain Showers
- 55
- 78
Chance Rain Showers
- 61
- 79
Chance Rain Showers
- 56
- 80
Rain Showers Likely
Today 22 Apr Johnson
Sunny. Highs in the upper 70s. Southwest Winds 10 to 15 Mph.
Tonight 22 Apr Johnson
Clear. Lows in the mid 50s. South Winds 5 to 10 Mph.
Grantsburg Temperature Statistics
April Temperature
Metropolis Municipal Airport (14.3 miles)
Lowest 6 April, 2026
35.1 °FAverage April
64.8 °FHighest 17 April, 2026
84.4 °F
Climate (2021–Present)
Metropolis Municipal Airport (14.3 miles)
Average Low 2021–2026
48.8 °FAverage 2021–2026
59.1 °FAverage High 2021–2026
69.5 °F