Ada County, ID Weather Forecast
County weather hub
Rain Showers
Compare major city weather across Ada County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain showers before noon, then showers and thunderstorms. Mostly cloudy, with a high near 65. South southeast wind 6 to 10 mph. Chance of precipitation is 80%.
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
- Apr 11 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 2:07 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 65 degrees F.
Monday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Monday at about 8 to 17 mph NW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 2:07 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
Rain showers likely. Mostly cloudy, with a low around 43. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers. Cloudy, with a high near 55. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
A chance of rain showers. Partly sunny, with a high near 55. Chance of precipitation is 50%.
Partly cloudy, with a low around 35.
Mostly sunny, with a high near 59.
Partly cloudy, with a low around 38.
A slight chance of rain showers after noon. Partly sunny, with a high near 63. Chance of precipitation is 20%.
A slight chance of rain showers. Mostly cloudy, with a low around 38.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Rain Showers
|
65°F |
6 to 10 mph
SSE
|
|
Saturday Night
Apr 11
|
Rain Showers Likely
|
43°F |
8 mph
ESE
|
|
Sunday
Apr 12
|
Rain Showers
|
55°F |
6 to 15 mph
WNW
|
|
Sunday Night
Apr 12
|
Chance Rain Showers
|
37°F |
9 mph
WNW
|
|
Monday
Apr 13
|
Chance Rain Showers
|
55°F |
8 to 17 mph
NW
|
|
Monday Night
Apr 13
|
Partly Cloudy
|
35°F |
8 to 14 mph
NW
|
|
Tuesday
Apr 14
|
Mostly Sunny
|
59°F |
7 to 13 mph
NW
|
|
Tuesday Night
Apr 14
|
Partly Cloudy
|
38°F |
6 to 9 mph
ESE
|
|
Wednesday
Apr 15
|
Partly Sunny then Slight Chance Rain Showers
|
63°F |
9 mph
SSW
|
|
Wednesday Night
Apr 15
|
Slight Chance Rain Showers
|
38°F |
9 mph
NW
|
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.
