textproduct: Central Illinois

KEY MESSAGES

- Above normal temperatures will prevail...with highs reaching 60 degrees or higher by next Monday through Wednesday. The warmest day being next Wednesday with the NBM having a 40-60% chance of temperatures exceeding 65 degrees that afternoon.

- A storm system will bring rain to parts of central Illinois late Saturday afternoon through early Sunday morning. The highest probability of 20-50% chance of exceeding 1 inch of rain south of I-72.

DISCUSSION

Issued at 129 AM CST Fri Feb 13 2026

Another nice February day is in store for today as a high pressure center sits over the Ohio Valley. Mostly clear skies, highs in the upper 50s, and dry weather makes for a wonderful Friday the 13th. With the small dewpoint depressions and clear skies, there could be some patchy, shallow fog across the forecast area this morning as the sun rises.

Tomorrow, the pattern is expected to make a change. A low pressure system is expected to travel eastward from Oklahoma Saturday through Sunday. Thankfully, temperatures will remain above freezing for the next week, so any precipitation we receive will be in liquid/rain form. The models have wobbled around with where exactly this low will travel, which will determine how much rain our CWA will see. The best chances to see a healthy dose of rain will be focused along and south of the I-72 corridor. The NBM is showing a 20-50% chance of exceeding 1 inch of rain from 18z Sat to 18z Sun south of I-72. Currently, have QPF of 0.25-0.90 across most of the forecast area, decreasing amounts as you move north through central IL. The soil has begun to thaw thanks to the warm temperatures as of recent and the snow pack has vanished, so flooding risks are low as of now. The WPC does have us in a Marginal Risk for excessive rainfall for Saturday.

The start of the new week will be dry and warm. Above normal temperatures aren't going anywhere anytime soon. Highs in the upper 50s to mid 60s, and lows in the mid 30s to mid 40s are forecast for the next week. The warmest day being next Wednesday with the NBM having a 40-60% chance of temperatures exceeding 65 degrees that afternoon. More chances for some light rain arrive midweek, next week.

Copple

AVIATION

(For the 18z TAFs through 18z Saturday Afternoon) Issued at 1123 AM CST Fri Feb 13 2026

VFR conditions will prevail at all TAF sites next 24hrs. Skies will be clear this afternoon through tonight and then high cirrus will advect into the area with sites becoming broken cirrus tomorrow morning. Winds will be southwest at 10-15kts this afternoon but then decrease this evening and remain southwesterly. Winds become light and variable tomorrow morning.

Auten

ILX WATCHES/WARNINGS/ADVISORIES

None.