Thunderstorms and Heavy Rains in the Appalachians

Multiple rounds of moderate to locally heavy rain will impact portions of the Appalachians and Mid-Atlantic, which may lead to flash flooding concerns. Thunderstorms with isolated severe wind gusts will be possible this afternoon from parts of the Southeast into the southern and central Appalachians. A multi-day heavy rain will pose a flash flood threat in New Mexico beginning Tuesday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083° N Lon: 122.11833° W Elev: 46.0 ft.

Overcast

59°F

15°C

Humidity 82%
Wind Speed WNW 6 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Sep 07:35 AM PDT
Detailed forecast for

San Francisco Bay Shoreline

Today
Mostly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. Southwest winds 5 to 10 mph... Becoming west 10 to 20 mph in the afternoon.
Tonight
Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s. West winds 10 to 20 mph...becoming southwest 5 to 10 mph after midnight.
Tuesday
Mostly cloudy in the morning then becoming sunny. Highs in the 70s. Southwest winds 5 to 15 mph.
Tuesday Night
Mostly clear. Lows in the upper 50s. West winds 10 to 20 mph...becoming southwest 5 to 10 mph after midnight.
Wednesday
Partly cloudy in the morning then becoming sunny. Highs in the lower to mid 80s. South winds up to 5 mph...becoming northwest in the afternoon.
Wednesday Night
Mostly clear. Lows around 60.
Thursday And Thursday Night
Partly cloudy. Highs in the upper 70s to mid 80s. Lows around 60.
Friday
Partly cloudy. Highs in the 70s.
Friday Night
Mostly clear. Lows in the upper 50s.
Saturday
Partly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s.
Saturday Night
Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s.
Sunday
Partly cloudy. Highs in the 60s to upper 70s.



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602 AM PDT Mon Sep 21 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database