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Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
65°F
18°C
| Humidity | 78% |
| Wind Speed | E 8 mph |
| Barometer | 30.10 in (1018.8 mb) |
| Dewpoint | 58°F (14°C) |
| Visibility | 10.00 mi |
| Last update | 15 Oct 2:54 am CDT |
Extended Forecast for
Bethany IL
Overnight

Low: 61 °F
Slight Chance
ShowersThursday

High: 77 °F
Showers
Thursday Night
Low: 45 °F
Showers
Likely then
Chance
Showers and
BreezyFriday
High: 55 °F
Breezy.
Mostly Cloudy
then Chance
ShowersFriday Night

Low: 35 °F
Decreasing
CloudsSaturday

High: 58 °F
Areas Frost
then SunnySaturday Night

Low: 34 °F
Clear then
FrostSunday

High: 68 °F
Frost then
SunnySunday Night

Low: 36 °F
Mostly Clear
Detailed Forecast
Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 61. East northeast wind around 7 mph.
Thursday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 77. East wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 4am. Increasing clouds, with a low around 45. Breezy, with a southwest wind 11 to 20 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers after 4pm. Partly sunny, with a high near 55. Breezy, with a northwest wind around 21 mph, with gusts as high as 31 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. North wind 10 to 15 mph, with gusts as high as 22 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 58. North wind 5 to 7 mph becoming calm in the afternoon.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, clear, with a low around 34. Light and variable wind.
Sunday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 76.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Bethany IL
39.64°N 88.75°W (Elev. 650 ft)
39.64°N 88.75°W (Elev. 650 ft)
1:55 am CDT Oct 15, 2026
3am CDT Oct 15, 2026-6pm CDT Oct 21, 2026



