Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday
Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >
Hazardous Weather Conditions
Current conditions at
Montague Siskiyou County Airport (KSIY)
Lat: 41.77375°NLon: 122.46817°WElev: 2644.0ft.
Clear
46°F
8°C
| Humidity | 56% |
| Wind Speed | SSE 3 MPH |
| Barometer | 30.42 in (1030.14 mb) |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Last update | 12 Jan 04:20 PM PST |
Extended Forecast for
15 Miles ESE Happy Camp CA
Freezing Fog Advisory January 13, 02:00am until January 13, 11:00am
Tonight
Low: 42 °F
Mostly Clear
Tuesday
High: 49 °F
Sunny
Tuesday Night
Low: 39 °F
Clear
Wednesday
High: 49 °F
Sunny
Wednesday Night
Low: 34 °F
Clear
Thursday
High: 48 °F
Sunny
Thursday Night
Low: 34 °F
Clear
Friday
High: 48 °F
Sunny
Friday Night
Low: 34 °F
Clear
Detailed Forecast
Tonight
Mostly clear, with a steady temperature around 42. South wind around 6 mph.
Tuesday
Sunny, with a high near 49. South southeast wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Clear, with a low around 39. Southeast wind around 6 mph.
Wednesday
Sunny, with a high near 49. East northeast wind 7 to 9 mph.
Wednesday Night
Clear, with a low around 34. East wind around 9 mph.
Thursday
Sunny, with a high near 48.
Thursday Night
Clear, with a low around 34.
Friday
Sunny, with a high near 48.
Friday Night
Clear, with a low around 34.
Saturday
Sunny, with a high near 49.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 50.
Sunday Night
Mostly clear, with a low around 37.
M.L.King Day
Mostly sunny, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
15 Miles ESE Happy Camp CA
41.74°N 123.07°W (Elev. 5745 ft)
41.74°N 123.07°W (Elev. 5745 ft)
3:40 pm PST Jan 12, 2026
4pm PST Jan 12, 2026-6pm PST Jan 19, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
