Raritan, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Raritan, IL in one place.
A chance of showers and thunderstorms. Sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Raritan, 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: Jul 17, 2026 3:16 PM CDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Raritan, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 3:16 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Raritan
Saturday looks like the warmest upcoming period in Raritan at 92 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 15 mph NW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 3:16 PM CDT
- Coverage
- 7 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 chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Sunny. High near 92, with temperatures falling to around 90 in the afternoon. Heat index values as high as 101. West wind around 10 mph, with gusts as high as 20 mph.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Northeast wind around 5 mph. Chance of precipitation is 20%.
Sunny, with a high near 86.
Mostly clear, with a low around 69.
Mostly sunny, with a high near 92.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 73.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 87.
Mostly clear, with a low around 63.
Sunny, with a high near 80.
Mostly clear, with a low around 61.
A slight chance of rain showers between 7am and 1pm. Sunny, with a high near 80.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 17
|
Chance Showers And Thunderstorms
|
89°F |
5 to 10 mph
SW
|
|
Tonight
Jul 17
|
Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
5 to 10 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
92°F |
10 mph
W
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
69°F |
5 mph
NE
|
|
Sunday
Jul 19
|
Sunny
|
86°F |
5 mph
E
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
69°F |
5 mph
SE
|
|
Monday
Jul 20
|
Mostly Sunny
|
92°F |
5 to 10 mph
S
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
73°F |
5 to 10 mph
W
|
|
Tuesday
Jul 21
|
Slight Chance Showers And Thunderstorms then Sunny
|
87°F |
5 to 15 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
63°F |
5 to 15 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
80°F |
5 to 10 mph
NE
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
61°F |
0 to 5 mph
E
|
|
Thursday
Jul 23
|
Slight Chance Rain Showers
|
80°F |
5 mph
SE
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
63°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Raritan.