Washington County, MO Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Washington County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
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 1 of 1 mapped cities in Washington County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 15 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 3:30 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Washington County
Wednesday looks like the warmest upcoming period in Washington County at 84 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Wednesday at about 8 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 3:30 AM CDT
- Coverage
- 2 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms
|
84°F |
8 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
59°F |
6 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
80°F |
3 to 7 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Washington County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Washington County.
Largest mapped city population in this region: 2,548.
