Grantsburg Weather Forecast
- 41
- 69
Mostly Sunny
- 39
- 62
Mostly Sunny
- 53
- 75
Partly Sunny
- 54
- 75
Mostly Sunny
- 57
- 79
Slight Chance Thunderstorms
- 61
- 80
Slight Chance Thunderstorms
- 67
- 85
Chance Rain Showers
Today 6 Apr Johnson
Sunny. Near steady temperature in the upper 60s. Northwest Winds around 10 Mph.
Tonight 6 Apr Johnson
Mostly clear. Lows around 40. North Winds 5 to 10 Mph.
Grantsburg Temperature Statistics
April Temperature
Metropolis Municipal Airport (14.3 miles)
Lowest 4 April, 2026
45.7 °FAverage April
71 °FHighest 1 April, 2026
82.9 °F
Climate (2021–Present)
Metropolis Municipal Airport (14.3 miles)
Average Low 2021–2026
48.8 °FAverage 2021–2026
59 °FAverage High 2021–2026
69.4 °F