Custer, ID Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Custer, ID in one place.
A slight chance of rain showers between 7am and 10am, then a slight chance of showers and thunderstorms between noon and 1pm, then showers and thunderstorms likely between 1pm and 5pm, then a chance of showers and thunderstorms. Partly sunny. High near 63, with temperatures falling to around 59 in the afternoon. Southeast wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Custer, ID is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 16, 2026 3:39 PM MDT.
The active forecast window currently covers Sep 17 to Sep 22, 2026 for Custer, ID.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 3:39 PM MDT
- Forecast office
- PIH
- Source
- NOAA / NWS
Daily Outlook
This Week in Custer
Thursday looks like the warmest upcoming period in Custer at 63 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Thursday at about 6 to 9 mph SE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 16, 2026 3:39 PM MDT
- Coverage
- 7 days
- Time zone
- America/Boise
- Forecast office
- PIH
- Radar station
- KCBX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 8pm. Mostly cloudy, with a low around 41. South southeast wind around 3 mph. Chance of precipitation is 30%.
A chance of rain showers before noon, then showers and thunderstorms likely. Mostly cloudy, with a high near 56. South wind 1 to 6 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.
Mostly sunny, with a high near 59.
Mostly clear, with a low around 37.
Sunny, with a high near 62.
Mostly clear, with a low around 39.
Sunny, with a high near 62.
Mostly clear, with a low around 39.
Sunny, with a high near 62.
Mostly clear, with a low around 40.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Sep 17
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
63°F |
6 to 9 mph
SE
|
|
Thursday Night
Sep 17
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
41°F |
3 mph
SSE
|
|
Friday
Sep 18
|
Showers And Thunderstorms Likely
|
56°F |
1 to 6 mph
S
|
|
Friday Night
Sep 18
|
Chance Showers And Thunderstorms
|
38°F |
1 to 6 mph
NW
|
|
Saturday
Sep 19
|
Mostly Sunny
|
59°F |
0 to 6 mph
NNW
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
37°F |
2 to 6 mph
N
|
|
Sunday
Sep 20
|
Sunny
|
62°F |
5 mph
S
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
39°F |
5 mph
NE
|
|
Monday
Sep 21
|
Sunny
|
62°F |
1 to 6 mph
SSW
|
|
Monday Night
Sep 21
|
Mostly Clear
|
39°F |
2 to 6 mph
WSW
|
|
Tuesday
Sep 22
|
Sunny
|
62°F |
1 to 7 mph
SSW
|
|
Tuesday Night
Sep 22
|
Mostly Clear
|
40°F |
2 to 6 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Custer.
