Washington County, IA Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Washington County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny, with a high near 59.
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 3 of 3 mapped cities in Washington County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 16 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 12:50 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Washington County
Sunday looks like the warmest upcoming period in Washington County at 64 degrees F.
Friday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 20 to 30 mph NW.
The forecast from Oct 16 through Oct 18 stays mostly dry.
Forecast Details
- Last updated
- Oct 12, 2026 12:50 AM CDT
- Coverage
- 3 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
Partly cloudy, with a low around 37.
Sunny, with a high near 57.
Clear, with a low around 38.
Sunny, with a high near 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Partly Sunny
|
59°F |
20 to 30 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
37°F |
5 to 20 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
57°F |
5 mph
NW
|
|
Saturday Night
Oct 17
|
Clear
|
38°F |
5 to 10 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
64°F |
10 to 20 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Washington County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Washington County.
Largest mapped city population in this region: 1,401.