Sunbeam Weather Forecast
- 77
- 93
Decreasing Clouds
- 73
- 95
Mostly Sunny
- 65
- 88
Mostly Sunny
- 64
- 87
Mostly Sunny
- 67
- 87
Slight Chance Thunderstorms
- 66
- 84
Slight Chance Thunderstorms
Today 26 Jul Mercer
Areas of fog early this morning. Mostly cloudy with a slight chance of Showers and Thunderstorms early this Morning, then mostly sunny this afternoon. Hot with Highs in the lower 90s. South Winds around 5 Mph, becoming southwest this afternoon. Chance of rain 20 percent. Heat index Values up to 111.
Tonight 26 Jul Mercer
Partly cloudy in the Evening, then becoming mostly clear. Humid with Lows in the upper 70s. Southwest Winds 5 to 10 Mph. Heat index Values up to 110 early in the evening.
Sunbeam Temperature Statistics
July Temperature
Galesburg Municipal Airport (20.5 miles)
Lowest 23 July, 2026
53.6 °FAverage July
75.4 °FHighest 18 July, 2026
91.8 °F
Climate (2021–2026)
Galesburg Municipal Airport (20.5 miles)
Average Low 2021–2026
41.7 °FAverage 2021–2026
52.1 °FAverage High 2021–2026
62.5 °F