Onarga, IL Weather Forecast
Local 7-day forecast
Scattered Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Onarga, IL in one place.
Scattered rain showers after 10am. Mostly cloudy, with a high near 52. Northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Onarga, 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 1:26 PM CDT.
The active forecast window currently covers Oct 16 to Oct 21, 2026 for Onarga, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 16 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 1:26 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Onarga
Wednesday looks like the warmest upcoming period in Onarga at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Friday at about 15 to 20 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 1:26 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Scattered rain showers before 1am. Partly cloudy, with a low around 36. North northwest wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.
Patchy frost between 7am and 8am. Sunny, with a high near 57. Northwest wind 5 to 10 mph.
Areas of frost after 3am. Clear, with a low around 36.
Areas of frost before 8am. Sunny, with a high near 63.
Mostly clear, with a low around 38.
Mostly sunny, with a high near 72.
Partly cloudy, with a low around 41.
Mostly sunny, with a high near 73.
Mostly clear, with a low around 43.
Sunny, with a high near 75.
Mostly clear, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Scattered Rain Showers
|
52°F |
15 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Scattered Rain Showers
|
36°F |
10 to 20 mph
NNW
|
|
Saturday
Oct 17
|
Patchy Frost then Sunny
|
57°F |
5 to 10 mph
NW
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
36°F |
5 mph
SSW
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
63°F |
5 to 10 mph
SSW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
0 to 5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
72°F |
0 to 5 mph
SSW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
41°F |
0 mph
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
73°F |
0 mph
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
43°F |
0 mph
|
|
Wednesday
Oct 21
|
Sunny
|
75°F |
0 to 5 mph
SSE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
47°F |
0 mph
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Onarga.
