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 75. Northwest wind around 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
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 1:18 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Stephenson County
Today looks like the warmest upcoming period in Stephenson County at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Friday at about 15 to 25 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 1:18 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
Showers and thunderstorms likely between 7pm and 5am. Mostly cloudy, with a low around 58. North wind 0 to 5 mph. Chance of precipitation is 70%.
Partly sunny, with a high near 67. Northeast wind 5 to 10 mph.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 51. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.
Rain showers. Cloudy, with a high near 62. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers before 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 80%.
Mostly sunny, with a high near 56.
Widespread frost after 2am. Mostly clear, with a low around 32.
Widespread frost before 9am. Sunny, with a high near 58.
Clear, with a low around 38.
Sunny, with a high near 64.
Partly cloudy, with a low around 45.
A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 67.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 13
|
Sunny
|
75°F |
5 mph
NW
|
|
Tonight
Oct 13
|
Showers And Thunderstorms Likely
|
58°F |
0 to 5 mph
N
|
|
Wednesday
Oct 14
|
Partly Sunny
|
67°F |
5 to 10 mph
NE
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy then Slight Chance Rain Showers
|
51°F |
5 to 10 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers
|
62°F |
5 to 10 mph
NE
|
|
Thursday Night
Oct 15
|
Rain Showers
|
44°F |
5 to 20 mph
NW
|
|
Friday
Oct 16
|
Mostly Sunny
|
56°F |
15 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Widespread Frost
|
32°F |
0 to 15 mph
NW
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
58°F |
0 to 10 mph
W
|
|
Saturday Night
Oct 17
|
Clear
|
38°F |
5 to 10 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
64°F |
10 to 15 mph
SW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
45°F |
5 to 10 mph
S
|
|
Monday
Oct 19
|
Slight Chance Rain Showers
|
67°F |
5 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy then Slight Chance Rain Showers
|
47°F |
0 to 5 mph
S
|
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.
