Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Mount Shasta (KMHS)

Lat: 41.31494° N Lon: 122.31702° W Elev: 3540.0 ft.

Clear

74°F

23°C

Humidity 49%
Wind Speed N 0 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 17 Aug 05:56 PM PDT
Detailed forecast for

South Central Siskiyou County

Tonight
Partly cloudy with a slight chance of thunderstorms early this evening, then mostly clear with a slight chance of showers late this evening. Mostly clear after midnight. Lows in the lower 40s to lower 50s. Southwest winds 5 to 10 mph.
Monday
Sunny. Highs in the lower 70s to lower 80s. South winds 5 to 10 mph.
Monday Night
Clear. Lows in the lower 40s to lower 50s. South winds 5 to 10 mph shifting to the southeast well after midnight.
Tuesday
Sunny. Highs in the mid 70s to lower 80s. East winds around 5 mph shifting to the south in the afternoon.
Tuesday Night
Clear. Lows in the lower 40s to lower 50s. Southwest winds 5 to 10 mph shifting to the north after midnight.
Wednesday And Wednesday Night
Clear. Highs in the lower 80s to lower 90s. Lows in the mid 40s to mid 50s.
Thursday Through Friday
Clear. Highs in the mid 80s to mid 90s. Lows in the lower 50s to lower 60s.
Friday Night
Mostly clear. Lows in the mid 50s to mid 60s.
Saturday Through Sunday
Clear. Highs in the mid 80s to mid 90s. Lows in the mid 50s to mid 60s.



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531 PM PDT Sun Aug 17 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database