Crystal, ID Weather Forecast
Local 7-day forecast
Isolated Showers And Thunderstorms then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Crystal, ID in one place.
Isolated showers and thunderstorms before 9am. Mostly sunny, with a high near 82. West northwest wind 3 to 9 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Crystal, 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 Crystal, 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
- BOI
- Source
- NOAA / NWS
Daily Outlook
This Week in Crystal
Monday looks like the warmest upcoming period in Crystal at 83 degrees F.
Thursday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Thursday at about 3 to 9 mph WNW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 16, 2026 3:39 PM MDT
- Coverage
- 7 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 49. South wind 2 to 8 mph.
A slight chance of rain showers before noon, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 77. Southeast wind around 3 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 49. Chance of precipitation is 20%.
Sunny, with a high near 80.
Mostly clear, with a low around 49.
Sunny, with a high near 82.
Mostly clear, with a low around 50.
Sunny, with a high near 83.
Mostly clear, with a low around 50.
Sunny, with a high near 83.
Mostly clear, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Sep 17
|
Isolated Showers And Thunderstorms then Mostly Sunny
|
82°F |
3 to 9 mph
WNW
|
|
Thursday Night
Sep 17
|
Partly Cloudy
|
49°F |
2 to 8 mph
S
|
|
Friday
Sep 18
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
77°F |
3 mph
SE
|
|
Friday Night
Sep 18
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
49°F |
3 mph
WNW
|
|
Saturday
Sep 19
|
Sunny
|
80°F |
1 to 5 mph
E
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
49°F |
1 mph
NNW
|
|
Sunday
Sep 20
|
Sunny
|
82°F |
1 mph
SW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
50°F |
1 mph
N
|
|
Monday
Sep 21
|
Sunny
|
83°F |
1 mph
NW
|
|
Monday Night
Sep 21
|
Mostly Clear
|
50°F |
1 mph
N
|
|
Tuesday
Sep 22
|
Sunny
|
83°F |
2 mph
NNW
|
|
Tuesday Night
Sep 22
|
Mostly Clear
|
49°F |
1 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Crystal.