Sunbeam Weather Forecast
- 12
- 45
Rain
- 24
- 31
Partly Sunny
- 18
- 45
Partly Sunny
- 24
- 36
Mostly Cloudy
- 34
- 42
Mostly Cloudy
- 29
- 48
Mostly Cloudy
Today 18 Dec Mercer
Rain in the Morning, then mostly sunny with isolated snow Showers in the afternoon. Windy with Highs in the mid 40s. Temperature falling into the upper 20s in the afternoon. Southwest Winds 15 to 20 Mph, becoming west 20 to 30 Mph in the afternoon. Gusts up to 45 Mph. Chance of precipitation near 100 percent.
Tonight 18 Dec Mercer
Mostly cloudy and windy. Much cooler with Lows around 12. West Winds 25 to 30 Mph, becoming northwest 15 to 25 Mph after midnight. Gusts up to 45 Mph. Wind chill Values as low as 9 below.
Sunbeam Temperature Statistics
December Temperature
Galesburg Municipal Airport (20.5 miles)
Lowest 14 December, 2025
-12.5 °FAverage December
19.5 °FHighest 9 December, 2025
41.2 °F
Climate (2020–Present)
Galesburg Municipal Airport (20.5 miles)
Average Low 2020–2025
41.3 °FAverage 2020–2025
51.5 °FAverage High 2020–2025
61.7 °F