Colchester, IL Weather Forecast
Local 7-day forecast
Areas Of Frost then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Colchester, IL in one place.
Areas of frost before 9am. Sunny, with a high near 57.
Local Weather Overview
This forecast page for Colchester, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 6:06 PM CDT.
The active forecast window currently covers Oct 17 to Oct 21, 2026 for Colchester, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 17 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 6:06 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Colchester
Wednesday looks like the warmest upcoming period in Colchester at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Sunday at about 5 to 10 mph S.
The forecast from Oct 17 through Oct 21 stays mostly dry.
Forecast Details
- Last updated
- Oct 15, 2026 6:06 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Areas of frost after 4am. Clear, with a low around 36.
Areas of frost before 8am. Sunny, with a high near 66.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 74.
Mostly clear, with a low around 48.
Sunny, with a high near 76.
Mostly clear, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
57°F |
0 to 5 mph
E
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
36°F |
0 to 5 mph
S
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
66°F |
5 to 10 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
70°F |
0 to 5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
44°F |
0 to 5 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
74°F |
0 to 5 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
48°F |
0 to 5 mph
E
|
|
Wednesday
Oct 21
|
Sunny
|
76°F |
0 to 5 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
52°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Colchester.