Harco, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Harco, IL in one place.
Mostly sunny. High near 56, with temperatures falling to around 53 in the afternoon. North northwest wind 7 to 12 mph.
Local Weather Overview
This forecast page for Harco, 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: Nov 6, 2026 12:54 PM CST.
The active forecast window currently covers Nov 6 to Nov 12, 2026 for Harco, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 6 to Nov 12, 2026
- Latest sync
- Nov 6, 2026 12:54 PM CST
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Harco
Tuesday looks like the warmest upcoming period in Harco at 69 degrees F.
Saturday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Today at about 7 to 12 mph NNW.
The forecast from Nov 6 through Nov 12 stays mostly dry.
Forecast Details
- Last updated
- Nov 6, 2026 12:54 PM CST
- Coverage
- 8 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KPAH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Widespread frost after 1am. Clear, with a low around 32. North wind 1 to 6 mph.
Widespread frost before 9am. Sunny. High near 56, with temperatures falling to around 51 in the afternoon. North northwest wind 1 to 5 mph.
Widespread frost after 10pm. Mostly clear, with a low around 31. West northwest wind around 1 mph.
Widespread frost before 8am. Sunny, with a high near 63. West southwest wind 1 to 8 mph.
Patchy frost after 4am. Clear, with a low around 36. West southwest wind 0 to 3 mph.
Patchy frost before 7am. Sunny, with a high near 68. West southwest wind 0 to 6 mph.
Clear, with a low around 41. Southwest wind around 3 mph.
Sunny, with a high near 69. West southwest wind 2 to 6 mph.
Mostly clear, with a low around 42. Northwest wind around 1 mph.
Mostly sunny, with a high near 66. North northwest wind 0 to 6 mph.
Partly cloudy, with a low around 39. North northwest wind around 2 mph.
Mostly sunny, with a high near 59. North northwest wind 2 to 10 mph.
Partly cloudy, with a low around 35. North wind around 3 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Nov 6
|
Mostly Sunny
|
56°F |
7 to 12 mph
NNW
|
|
Tonight
Nov 6
|
Clear then Widespread Frost
|
32°F |
1 to 6 mph
N
|
|
Saturday
Nov 7
|
Widespread Frost then Sunny
|
56°F |
1 to 5 mph
NNW
|
|
Saturday Night
Nov 7
|
Widespread Frost
|
31°F |
1 mph
WNW
|
|
Sunday
Nov 8
|
Widespread Frost then Sunny
|
63°F |
1 to 8 mph
WSW
|
|
Sunday Night
Nov 8
|
Clear then Patchy Frost
|
36°F |
0 to 3 mph
WSW
|
|
Monday
Nov 9
|
Patchy Frost then Sunny
|
68°F |
0 to 6 mph
WSW
|
|
Monday Night
Nov 9
|
Clear
|
41°F |
3 mph
SW
|
|
Tuesday
Nov 10
|
Sunny
|
69°F |
2 to 6 mph
WSW
|
|
Tuesday Night
Nov 10
|
Mostly Clear
|
42°F |
1 mph
NW
|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
66°F |
0 to 6 mph
NNW
|
|
Wednesday Night
Nov 11
|
Partly Cloudy
|
39°F |
2 mph
NNW
|
|
Thursday
Nov 12
|
Mostly Sunny
|
59°F |
2 to 10 mph
NNW
|
|
Thursday Night
Nov 12
|
Partly Cloudy
|
35°F |
3 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harco.