Greg Porter

2 weeks ago | sfchronicle.com | Greg Porter

Festival attendees lounged on the lawn during the first day of the BottleRock Napa Valley Festival in May 2024. Jessica ChristianBottleRock is back and the Bay Area’s first major festival of the summer season kicks off this weekend in Napa. Expect a bit more variety compared to the cooler weather that marked the festival last year and a forecast that swings between sunny warmth and evening chill, with just enough wind to keep things interesting.

2 weeks ago | sfchronicle.com | Greg Porter

The wind will peak across the Bay Area late Monday afternoon. Baron/Lynx A spring warmup is spreading across California this week, with temperatures climbing into the 90s across the Central Valley and inland parts of the Bay Area by midweek. Accompanying the warmup will be an increased risk of fire weather, especially on Monday, when gusty winds and low humidity will elevate fire danger across the interior North Bay, East Bay and the Central Valley.

2 weeks ago | sfchronicle.com | Greg Porter

A red flag warning is in effect through 8 p.m. Monday for the Sacramento Valley and parts of the interior Bay Area. Baron/Lynx A red flag warning is in effect from 8 a.m. Sunday through 8 p.m. Monday across the Sacramento Valley, northern San Joaquin Valley, and the eastern interior East Bay, where a combination of dry air and gusty winds is expected to create critical fire weather conditions.

2 weeks ago | sfchronicle.com | Anthony Edwards |Greg Porter

A group of horses walk along a road as they are being evacuated during the Park Fire in the community of Cohasset (Butte County) in July 2024. Officials predict above-normal significant wildfire activity in much of Northern California in July and August 2025 due to a hot summer forecast combined with lush and likely very flammable vegetation. Stephen Lam/S.F. ChronicleCalifornia’s door for rain is closing quickly and wildfire season is around the corner.

3 weeks ago | sfchronicle.com | Greg Porter

Tuesday will be another cool day across the Bay Area. Baron/Lynx A stubborn chill will linger across the Bay Area on Tuesday, making mid-May feel more like March. Blame a sluggish upper-level storm system stalled over interior Northern California, too distant to stir up real trouble, but close enough to keep a brisk onshore breeze blowing and a chilly air mass parked overhead. Together, those two ingredients are more than enough to keep daytime highs stuck well below seasonal norms.