Ada County, ID Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Ada County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 97. North northwest wind 5 to 14 mph, with gusts as high as 23 mph.
County Weather Overview
This county weather page brings together forecast coverage for Ada 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 Ada County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 13 to Jul 17, 2026
- Latest sync
- Jul 11, 2026 5:03 PM MDT
- Forecast office
- BOI
- Source
- NOAA / NWS
Daily Outlook
This Week in Ada County
Friday looks like the warmest upcoming period in Ada County at 98 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 15 mph NW.
The forecast from Jul 13 through Jul 17 stays mostly dry.
Forecast Details
- Last updated
- Jul 11, 2026 5:03 PM MDT
- Coverage
- 6 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
Mostly cloudy, with a low around 67.
Partly sunny, with a high near 94.
Partly cloudy, with a low around 64.
Sunny, with a high near 96.
Mostly clear, with a low around 63.
Sunny, with a high near 96.
Mostly clear, with a low around 63.
Sunny, with a high near 98.
Partly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Jul 13
|
Mostly Sunny
|
97°F |
5 to 14 mph
NNW
|
|
Monday Night
Jul 13
|
Mostly Cloudy
|
67°F |
7 to 14 mph
WNW
|
|
Tuesday
Jul 14
|
Partly Sunny
|
94°F |
6 to 15 mph
NW
|
|
Tuesday Night
Jul 14
|
Partly Cloudy
|
64°F |
3 to 8 mph
NW
|
|
Wednesday
Jul 15
|
Sunny
|
96°F |
3 to 8 mph
NW
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
63°F |
7 mph
N
|
|
Thursday
Jul 16
|
Sunny
|
96°F |
9 to 13 mph
NW
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
63°F |
7 to 13 mph
NNW
|
|
Friday
Jul 17
|
Sunny
|
98°F |
7 to 10 mph
NW
|
|
Friday Night
Jul 17
|
Partly Cloudy
|
64°F |
3 to 10 mph
NNW
|
Major City Forecasts
Live forecast snapshots for major cities across Ada County.
Coverage
Forecast coverage currently spans 6 of 6 mapped cities in Ada County.
Largest mapped city population in this region: 228,959.
