Washington County, WI Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Washington County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 78.
County Weather Overview
This county weather page brings together forecast coverage for Washington County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Washington County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29, 2026
- Latest sync
- Aug 23, 2026 7:22 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Washington County
Saturday looks like the warmest upcoming period in Washington County at 78 degrees F.
Saturday is the coolest period ahead with temperatures near 78 degrees F.
The strongest winds are forecast for Saturday at about 0 to 5 mph S.
The forecast from Aug 29 through Aug 29 stays mostly dry.
Forecast Details
- Last updated
- Aug 23, 2026 7:22 AM CDT
- Coverage
- 1 day
- 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
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Mostly Sunny
|
78°F |
0 to 5 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Washington County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Washington County.
Largest mapped city population in this region: 4,715.
