Cornwall, ID Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Cornwall, ID in one place.
Mostly sunny. High near 70, with temperatures falling to around 68 in the afternoon. East wind 1 to 6 mph.
Local Weather Overview
This forecast page for Cornwall, 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 2:15 PM PDT.
The active forecast window currently covers Sep 17 to Sep 22, 2026 for Cornwall, ID.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 2:15 PM PDT
- Forecast office
- OTX
- Source
- NOAA / NWS
Daily Outlook
This Week in Cornwall
Thursday looks like the warmest upcoming period in Cornwall at 70 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Thursday at about 1 to 6 mph E.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Sep 16, 2026 2:15 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- OTX
- Radar station
- KOTX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers between 11pm and 5am. Mostly cloudy, with a low around 50. South wind around 2 mph. Chance of precipitation is 30%.
Mostly sunny, with a high near 63. West wind 1 to 5 mph.
Partly cloudy, with a low around 46.
Sunny, with a high near 64.
Mostly clear, with a low around 47.
Sunny, with a high near 66.
Mostly clear, with a low around 48.
Sunny, with a high near 66.
Mostly clear, with a low around 46.
Mostly sunny, with a high near 62.
Partly cloudy, with a low around 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Sep 17
|
Mostly Sunny
|
70°F |
1 to 6 mph
E
|
|
Thursday Night
Sep 17
|
Chance Rain Showers
|
50°F |
2 mph
S
|
|
Friday
Sep 18
|
Mostly Sunny
|
63°F |
1 to 5 mph
W
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
46°F |
3 mph
SW
|
|
Saturday
Sep 19
|
Sunny
|
64°F |
5 mph
SW
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
47°F |
3 mph
SW
|
|
Sunday
Sep 20
|
Sunny
|
66°F |
3 mph
SW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
48°F |
5 mph
S
|
|
Monday
Sep 21
|
Sunny
|
66°F |
5 mph
S
|
|
Monday Night
Sep 21
|
Mostly Clear
|
46°F |
5 mph
SW
|
|
Tuesday
Sep 22
|
Mostly Sunny
|
62°F |
2 to 6 mph
SW
|
|
Tuesday Night
Sep 22
|
Partly Cloudy
|
45°F |
2 to 6 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cornwall.