| National Weather Service Forecast for:
Decatur IL Issued by: National Weather Service Lincoln, IL |
||||||||||||||||||
| Updated: 1:26 am CDT Jun 22, 2026 | ||||||||||||||||||
|
| Today |
Mostly cloudy, with a high near 74. North wind 11 to 14 mph, with gusts as high as 22 mph. |
| Tonight |
Mostly clear, with a low around 54. North northeast wind 3 to 8 mph. |
| Tuesday |
Sunny, with a high near 78. Light east northeast wind. |
| Tuesday Night |
Partly cloudy, with a low around 59. Calm wind becoming southeast around 5 mph after midnight. |
| Wednesday |
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southwest wind 6 to 8 mph. |
| Wednesday Night |
Partly cloudy, with a low around 63. South southwest wind 3 to 6 mph. |
| Thursday |
Partly sunny, with a high near 79. Light west northwest wind becoming northwest 5 to 9 mph in the morning. |
| Thursday Night |
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 61. |
| Friday |
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. |
| Friday Night |
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%. |
| Saturday |
A chance of showers. Mostly cloudy, with a high near 82. |
| Saturday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. |
| Sunday |
Mostly sunny, with a high near 88. |
Forecast from NOAA-NWS for Decatur IL.
