Stephenson County, IL Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Stephenson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny. High near 80, with temperatures falling to around 78 in the afternoon. East wind 5 to 15 mph, with gusts as high as 25 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
- May 30 to Jun 5, 2026
- Latest sync
- May 30, 2026 8:32 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Stephenson County
Thursday looks like the warmest upcoming period in Stephenson County at 87 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Today at about 5 to 15 mph E.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 8:32 AM 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
Mostly cloudy, with a low around 55. East wind 10 to 15 mph, with gusts as high as 25 mph.
Partly sunny, with a high near 80. Southeast wind 5 to 10 mph.
A slight chance of rain showers between 1am and 4am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 56. East wind around 5 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7am. Partly sunny, with a high near 82.
Partly cloudy, with a low around 54.
Sunny, with a high near 82.
Mostly clear, with a low around 53.
Sunny, with a high near 84.
Mostly clear, with a low around 59.
Mostly sunny, with a high near 87.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
May 30
|
Partly Sunny
|
80°F |
5 to 15 mph
E
|
|
Tonight
May 30
|
Mostly Cloudy
|
55°F |
10 to 15 mph
E
|
|
Sunday
May 31
|
Partly Sunny
|
80°F |
5 to 10 mph
SE
|
|
Sunday Night
May 31
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
56°F |
5 mph
E
|
|
Monday
Jun 1
|
Slight Chance Showers And Thunderstorms then Partly Sunny
|
82°F |
5 mph
E
|
|
Monday Night
Jun 1
|
Partly Cloudy
|
54°F |
5 to 10 mph
E
|
|
Tuesday
Jun 2
|
Sunny
|
82°F |
5 to 10 mph
E
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
53°F |
0 to 10 mph
E
|
|
Wednesday
Jun 3
|
Sunny
|
84°F |
0 to 5 mph
SE
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
59°F |
5 mph
S
|
|
Thursday
Jun 4
|
Mostly Sunny
|
87°F |
5 to 10 mph
SW
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
SW
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms
|
87°F |
10 mph
SW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
W
|
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.
