Bay Area/ San Francisco

NWS San Francisco Cautions Against Elevated Grass Fire Danger Amid Stable Weather Patterns

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Published on June 14, 2025
NWS San Francisco Cautions Against Elevated Grass Fire Danger Amid Stable Weather PatternsSource: Daniel Ramirez from Honolulu, USA, CC BY 2.0, via Wikimedia Commons

The latest weather update from the National Weather Service San Francisco points to continued cool coastal conditions and warmer temperatures inland, with no major changes through the upcoming forecast period. As of this early morning, the NWS issued a synopsis describing the persistence of dry conditions, particularly over high terrain areas, which has consequently elevated the grass fire danger. Residents, especially in those high terrain areas, should remain vigilant due to the increased risk of fire starts, particularly in grass-rich environments.

The short-term forecast for today and tonight suggests a repeat of yesterday's patterns, limited stratus cloud cover in the morning followed by a warm afternoon with temperatures ranging from the upper 50s and 60s along the coast to the 70s, 80s, and lower 90s further inland, as stated by the NWS. According to NWS San Francisco, "Daytime highs today will be about the same as yesterday's with highs upper 50s/60s coastside to the 70s/80s/lower 90s inland, warmest to hottest farthest inland."

The long-term weather outlook from Sunday through Friday is steady, with little deviation in expected temperatures. A weak dry trough is anticipated to cross the area on Monday, followed by strengthening the high-pressure system over the Eastern Pacific. This pattern may slightly increase temperatures midweek, with cooler air and some cooling likely returning late in the week. These conditions suggest only subtle shifts in the daily rhythms of the Bay Area weather.

Aviation conditions are also projected to remain relatively unchanged, with mixed bags of MVFR-VFR (Marginal Visual Flight Rules-Visual Flight Rules) early in the morning and probable expansion of stratus coverage later. According to the Marine outlook, mariners will face fresh to strong northwesterly breezes and rough seas through Wednesday. The NWS warns of fresh to strong northwesterly breezes, near gale force gusts, and moderate to rough seas will prevail through Wednesday, indicating challenging conditions for those at sea.