Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Last Update: 255 PM PDT Fri Sep 18 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Tonight

NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 7 seconds and S 2 ft at 14 seconds.

Sat

NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave detail: NW 5 ft at 8 seconds. Patchy dense fog in the morning.

Sat Night

NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds.

Sun

NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds.

Sun Night

NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave detail: NW 5 ft at 7 seconds and SW 2 ft at 18 seconds.

Mon

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

Mon Night

W wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 5 ft at 9 seconds and SW 2 ft at 17 seconds.

Tue

NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds and S 2 ft at 16 seconds.

Tue Night

NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 11 seconds.

Wed

NW wind around 5 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 11 seconds and S 2 ft at 15 seconds.

Wed Night

NW wind 5 to 10 kt, easing to around 5 kt after midnight. Seas 4 to 6 ft.

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

in the deep water channel...mixed seas of 2 to 4 ft at 8 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 1.6 kt at 09:43 pm friday and 0.8 kt at 12:08 pm saturday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 2 to 4 ft at 8 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 1.6 kt at 09:43 PM Friday and 0.8 kt at 12:08 PM Saturday.