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October 2026 Climate Summary

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

52°F

11°C

Humidity	89%
Wind Speed	W 9 mph
Barometer	29.92 in (1013.2 mb)
Dewpoint	49°F (9°C)
Visibility	10.00 mi
Wind Chill	49°F (9°C)
Last update	5 Nov 5:54 pm CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Blue Mound IL

Tonight
Low: 40 °F
Chance
Showers
Friday
High: 50 °F
Gradual
Clearing
Friday Night
Low: 29 °F
Mostly Clear
Saturday
High: 52 °F
Sunny
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 60 °F
Sunny
Sunday Night
Low: 35 °F
Clear
Monday
High: 67 °F
Sunny
Monday Night
Low: 39 °F
Clear

Detailed Forecast

Tonight

A chance of showers with a slight chance of drizzle before 2am, then a slight chance of drizzle between 2am and 3am. Cloudy, with a low around 40. West wind 7 to 13 mph becoming north northwest after midnight. Winds could gust as high as 17 mph. Chance of precipitation is 30%.

Friday

Cloudy through mid morning, then gradual clearing, with a high near 50. North northwest wind 9 to 15 mph, with gusts as high as 21 mph.

Friday Night

Mostly clear, with a low around 29. North northwest wind 5 to 8 mph becoming calm in the evening.

Saturday

Sunny, with a high near 52. Calm wind becoming northwest around 5 mph.

Saturday Night

Mostly clear, with a low around 30. Light west southwest wind.

Sunday

Sunny, with a high near 60. West southwest wind 3 to 8 mph.

Sunday Night

Clear, with a low around 35. West southwest wind around 5 mph becoming calm in the evening.