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| OVERNIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | FRIDAY | SATURDAY |
 |  | | | | | | | | | |
| Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Clear | Clear | Clear | Sunny |
| Lo: 39°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C | Hi: 75°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Sun Oct 18 2026 
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Issued: 1200 AM CDT Sun Oct 18 2026
Key Messages
- Widespread frost is expected tonight as temperatures drop into the lower to middle 30s. Portions of southeast Missouri and southern Illinois may briefly reach the freezing mark.
- A warming trend will begin on Sunday, with high temperatures climbing a few degrees above normal for Wednesday through Friday. No rain and few clouds are expected.
Discussion
... Issued at 1200 AM CDT Sun Oct 18 2026
1034mb surface ridge sits just to the northeast of the area. Dewpoints are in the upper 30s to l...