Jefferson County, WI Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Jefferson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny, with a high near 65. Northeast wind 5 to 10 mph.
County Weather Overview
This county weather page brings together forecast coverage for Jefferson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 6 of 6 mapped cities in Jefferson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 14 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 10:22 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Jefferson County
Monday looks like the warmest upcoming period in Jefferson County at 66 degrees F.
Friday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Friday at about 15 to 20 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 10:22 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
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 48. Northeast wind around 5 mph.
Rain showers after 7am. Cloudy, with a high near 61. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers before 1am. Mostly cloudy, with a low around 43. Northwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly sunny, with a high near 55. Northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Mostly clear, with a low around 31. Northwest wind 0 to 15 mph.
Sunny, with a high near 57.
Clear, with a low around 36.
Sunny, with a high near 64.
Partly cloudy, with a low around 44.
A slight chance of rain showers between 7am and 1pm. Partly sunny, with a high near 66. Chance of precipitation is 20%.
Partly cloudy, with a low around 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Oct 14
|
Partly Sunny
|
65°F |
5 to 10 mph
NE
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy
|
48°F |
5 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers
|
61°F |
5 to 10 mph
E
|
|
Thursday Night
Oct 15
|
Rain Showers
|
43°F |
5 to 15 mph
NW
|
|
Friday
Oct 16
|
Mostly Sunny
|
55°F |
15 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear
|
31°F |
0 to 15 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
57°F |
0 to 10 mph
W
|
|
Saturday Night
Oct 17
|
Clear
|
36°F |
5 to 10 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
64°F |
10 to 15 mph
SW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
44°F |
5 to 15 mph
SW
|
|
Monday
Oct 19
|
Slight Chance Rain Showers
|
66°F |
5 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
45°F |
0 to 5 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Jefferson County.
Coverage
Forecast coverage currently spans 6 of 6 mapped cities in Jefferson County.
Largest mapped city population in this region: 12,372.
