Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Last Update: 230 AM PDT Sat Jul 4 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Today

W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 8 seconds and S 2 ft at 15 seconds.

Tonight

W wind around 5 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 8 seconds and S 2 ft at 15 seconds. Patchy dense fog after midnight.

Sun

SW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 8 seconds and S 2 ft at 15 seconds.

Sun Night

W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 8 seconds and S 2 ft at 14 seconds.

Mon

W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 8 seconds and S 2 ft at 17 seconds.

Mon Night

NW wind 10 to 15 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds and S 2 ft at 17 seconds.

Tue

NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave detail: NW 4 ft at 7 seconds and S 2 ft at 16 seconds.

Tue Night

NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and S 2 ft at 18 seconds.

Wed

NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and SW 2 ft at 17 seconds.

Wed Night

NW wind 20 to 25 kt. Seas 6 to 9 ft. Wave detail: NW 8 ft at 9 seconds and SW 2 ft at 17 seconds.

.....san francisco bar/fourfathom bank forecast.....

in the deep water channel...mixed seas of 3 to 5 ft at 17 seconds.

across the bar...swell can be more than twice as high across the bar than surrounding waters. Waves are also more prone to break, particularly during strong ebb currents. Maximum ebb current of 2.9 kt at 07:31 am saturday and 1.4 kt at 08:54 pm saturday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 3 to 5 ft at 17 seconds. ACROSS THE BAR...Swell can be more than twice as high across the bar than surrounding waters. Waves are also more prone to break, particularly during strong ebb currents. Maximum ebb current of 2.9 kt at 07:31 AM Saturday and 1.4 kt at 08:54 PM Saturday.