Pontoosuc, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Pontoosuc, IL in one place.
A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Local Weather Overview
This forecast page for Pontoosuc, 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: Apr 21, 2026 6:29 AM CDT.
The active forecast window currently covers Apr 23 to Apr 27, 2026 for Pontoosuc, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 23 to Apr 27, 2026
- Latest sync
- Apr 21, 2026 6:29 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Pontoosuc
Thursday looks like the warmest upcoming period in Pontoosuc at 78 degrees F.
Saturday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Thursday at about 10 to 15 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 21, 2026 6:29 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 90%.
Showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 70. Chance of precipitation is 90%.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Mostly sunny, with a high near 67.
Partly cloudy, with a low around 49.
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 67.
Showers and thunderstorms likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 23
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
78°F |
10 to 15 mph
S
|
|
Thursday Night
Apr 23
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
|
59°F |
10 to 15 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
70°F |
10 mph
W
|
|
Friday Night
Apr 24
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
51°F |
10 mph
N
|
|
Saturday
Apr 25
|
Mostly Sunny
|
67°F |
10 mph
NE
|
|
Saturday Night
Apr 25
|
Partly Cloudy
|
49°F |
10 mph
NE
|
|
Sunday
Apr 26
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
67°F |
10 mph
E
|
|
Sunday Night
Apr 26
|
Showers And Thunderstorms Likely
|
54°F |
10 mph
E
|
|
Monday
Apr 27
|
Showers And Thunderstorms Likely
|
66°F |
10 to 15 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Pontoosuc.