Ada County, ID Weather Forecast
County weather hub
Sunny
Compare major city weather across Ada County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 61. Northwest wind 14 to 17 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
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 12:27 PM MDT
- Forecast office
- BOI
- Source
- NOAA / NWS
Daily Outlook
This Week in Ada County
Saturday looks like the warmest upcoming period in Ada County at 76 degrees F.
Tonight is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Friday at about 8 to 18 mph SE.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Oct 13, 2026 12:27 PM MDT
- Coverage
- 8 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
Areas of frost after 4am. Mostly clear, with a low around 33. Northwest wind 2 to 14 mph.
Areas of frost before 10am. Mostly sunny, with a high near 66. North wind 2 to 14 mph, with gusts as high as 23 mph.
Clear, with a low around 39. Northwest wind 3 to 12 mph, with gusts as high as 22 mph.
Sunny, with a high near 71. East southeast wind 2 to 10 mph.
Clear, with a low around 42.
Sunny, with a high near 75.
Clear, with a low around 46.
Sunny, with a high near 76.
Mostly clear, with a low around 44.
Sunny, with a high near 74.
Mostly clear, with a low around 47.
Mostly sunny, with a high near 74.
A slight chance of rain showers. Partly cloudy, with a low around 42.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 13
|
Sunny
|
61°F |
14 to 17 mph
NW
|
|
Tonight
Oct 13
|
Mostly Clear then Areas Of Frost
|
33°F |
2 to 14 mph
NW
|
|
Wednesday
Oct 14
|
Areas Of Frost then Mostly Sunny
|
66°F |
2 to 14 mph
N
|
|
Wednesday Night
Oct 14
|
Clear
|
39°F |
3 to 12 mph
NW
|
|
Thursday
Oct 15
|
Sunny
|
71°F |
2 to 10 mph
ESE
|
|
Thursday Night
Oct 15
|
Clear
|
42°F |
8 mph
SE
|
|
Friday
Oct 16
|
Sunny
|
75°F |
8 to 18 mph
SE
|
|
Friday Night
Oct 16
|
Clear
|
46°F |
12 to 16 mph
SE
|
|
Saturday
Oct 17
|
Sunny
|
76°F |
9 to 15 mph
SSE
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
44°F |
6 mph
ENE
|
|
Sunday
Oct 18
|
Sunny
|
74°F |
6 to 9 mph
SE
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
47°F |
6 to 12 mph
SE
|
|
Monday
Oct 19
|
Mostly Sunny
|
74°F |
13 to 16 mph
SSE
|
|
Monday Night
Oct 19
|
Slight Chance Rain Showers
|
42°F |
10 to 15 mph
ESE
|
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.
