Washington County, ID 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 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
- Nov 6 to Nov 9, 2026
- Latest sync
- Nov 3, 2026 12:55 AM MST
- Forecast office
- BOI
- Source
- NOAA / NWS
Daily Outlook
This Week in Washington County
Sunday looks like the warmest upcoming period in Washington County at 56 degrees F.
Friday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Friday at about 0 to 6 mph E.
The forecast from Nov 6 through Nov 9 stays mostly dry.
Forecast Details
- Last updated
- Nov 3, 2026 12:55 AM MST
- Coverage
- 4 days
- Time zone
- America/Boise
- Forecast office
- BOI
- Radar station
- KCBX
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 36.
Mostly sunny, with a high near 54.
Partly cloudy, with a low around 38.
Partly sunny, with a high near 56.
Mostly cloudy, with a low around 39.
Partly sunny, with a high near 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Nov 6
|
Mostly Sunny
|
50°F |
0 to 6 mph
E
|
|
Friday Night
Nov 6
|
Partly Cloudy
|
36°F |
2 mph
NNE
|
|
Saturday
Nov 7
|
Mostly Sunny
|
54°F |
2 mph
ESE
|
|
Saturday Night
Nov 7
|
Partly Cloudy
|
38°F |
2 mph
NNE
|
|
Sunday
Nov 8
|
Partly Sunny
|
56°F |
0 to 5 mph
NW
|
|
Sunday Night
Nov 8
|
Mostly Cloudy
|
39°F |
2 mph
NNE
|
|
Monday
Nov 9
|
Partly Sunny
|
55°F |
2 mph
ENE
|
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: 5,376.
