Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Last Update: 237 AM PDT Thu Mar 19 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Today

NW wind around 5 kt, rising to 5 to 10 kt late this morning and afternoon. Seas 3 to 4 ft. Wave detail: W 3 ft at 7 seconds.

Tonight

NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: W 4 ft at 7 seconds.

Fri

NW wind around 5 kt, rising to 5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave detail: W 4 ft at 8 seconds.

Fri Night

NW wind 10 to 15 kt, rising to 15 to 20 kt after midnight. Seas 4 to 6 ft. Wave detail: W 5 ft at 8 seconds.

Sat

NW wind 15 to 20 kt, rising to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 6 to 9 ft. Wave detail: NW 8 ft at 9 seconds.

Sat Night

NW wind 25 to 30 kt, easing to 20 to 25 kt after midnight. Seas 6 to 9 ft. Wave detail: NW 9 ft at 10 seconds.

Sun

NW wind 15 to 20 kt, easing to 10 to 15 kt in the afternoon. Seas 5 to 8 ft. Wave detail: NW 7 ft at 10 seconds.

Sun Night

NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 10 seconds.

Mon

NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds and SW 3 ft at 13 seconds.

Mon Night

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

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

in the deep water channel...mixed seas of 3 to 4 feet at 18 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 3.3 kt at 05:14 am thursday and 2.5 kt at 05:40 pm thursday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 3 to 4 feet at 18 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 3.3 kt at 05:14 AM Thursday and 2.5 kt at 05:40 PM Thursday.