Grimsby Weather Forecast
- 66
- 82
Partly Sunny
- 68
- 86
Partly Sunny
- 63
- 84
Rain Showers Likely
- 62
- 82
Chance Thunderstorms
- 64
- 87
Chance Rain Showers
- 45
- 79
Rain Showers Likely
Today 13 Apr Jackson
Partly sunny. Highs in the lower 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.
Tonight 13 Apr Jackson
Partly cloudy. Lows in the upper 60s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.
Grimsby Temperature Statistics
April Temperature
Southern Illinois Airport (11.2 miles)
Lowest 6 April, 2026
36.6 °FAverage April
62.6 °FHighest 3 April, 2026
81.6 °F
Climate (2021–Present)
Southern Illinois Airport (11.2 miles)
Average Low 2021–2026
48 °FAverage 2021–2026
58.5 °FAverage High 2021–2026
69.1 °F