Marine Weather and Tide Forecast for Ashland, IL

DISCUSSION
Issued at 209 PM CDT Thu Apr 30 2026

Good afternoon! Today is a chilly spring day with some light rain drifting its way across central IL this afternoon. There is some dry air aloft so not all the rain will reach the ground, limiting rainfall accumulations today. Some of the heavier showers could have some gusty winds in them. Overnight, temperatures will drop down in the upper 30s to mid 40s, with a 40-60% chance of them getting below 36 degrees west of the Illinois River Valley. Along and west of the Illinois River Valley could have some frost develop in the colder, low spots tonight.

Tomorrow and Saturday will be slightly chillier, with highs in the mid 50s to low 60s. We will warm up to the mid 70s for a quick moment on Monday before cooling back into the low to mid 60s for the rest of the week. Lows will will be coolest tonight and tomorrow in the mid 30s to low 40s, then will be in the 40s to 50s. Additional frost chances arrive tomorrow night north of a Galesburg to Casey line.

There could be some sprinkles or light rain briefly tomorrow night.
We will be transforming into a more split flow pattern next week.
Which will bring multiple chances for rain throughout the next work week. The WPC has our QPF for the next 7 days in the 0.5-1.5 inch range. The CPC is showing above normal for precipitation in the next 6-10 days. The best chance for rain comes Tuesday into Wednesday morning with 50-70% POPs in the forecast.

AVIATION /00Z TAFS THROUGH 00Z SATURDAY/
Issued at 615 PM CDT Thu Apr 30 2026

Showers will bring a few hours of light rain to all terminals this evening. Once the precip ends, west winds will veer to the north-northwest. Winds pick up by mid to late morning with speeds increasing to 10-15 kts through the afternoon. An upper wave will bring widely scattered showers to west-central IL later in the period, but chances are pretty low (20%) so have refrained from including at this time.

ILX WATCHES/WARNINGS/ADVISORIES
None.