Stephenson County, IL Weather Forecast
County weather hub
Sunny
Compare major city weather across Stephenson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 92. Northwest wind 0 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Stephenson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 5 of 5 mapped cities in Stephenson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14 to Jul 19, 2026
- Latest sync
- Jul 13, 2026 6:39 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Stephenson County
Wednesday looks like the warmest upcoming period in Stephenson County at 93 degrees F.
Saturday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 13, 2026 6:39 AM CDT
- Coverage
- 6 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
Clear, with a low around 70.
Sunny, with a high near 93.
Mostly clear, with a low around 70.
Sunny, with a high near 91.
Mostly clear, with a low around 71.
Sunny, with a high near 90.
Mostly clear, with a low around 72.
Sunny, with a high near 89.
A slight chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 68.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 87.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
92°F |
0 to 5 mph
NW
|
|
Tuesday Night
Jul 14
|
Clear
|
70°F |
0 to 5 mph
W
|
|
Wednesday
Jul 15
|
Sunny
|
93°F |
5 mph
NW
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
70°F |
0 to 5 mph
NW
|
|
Thursday
Jul 16
|
Sunny
|
91°F |
0 to 5 mph
W
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
71°F |
5 mph
S
|
|
Friday
Jul 17
|
Sunny
|
90°F |
5 to 10 mph
SW
|
|
Friday Night
Jul 17
|
Mostly Clear
|
72°F |
5 to 10 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
89°F |
10 to 15 mph
SW
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms
|
68°F |
5 to 15 mph
SW
|
|
Sunday
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
87°F |
5 to 10 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Stephenson County.
Coverage
Forecast coverage currently spans 5 of 5 mapped cities in Stephenson County.
Largest mapped city population in this region: 23,447.
