Marin County Saturday Morning Weather Forecast — March 28, 2026

Meteorologist Zoe Mintz gave a weekend briefing that’s catching the attention of folks all over Marin County. A warm spell is hanging on for a couple more days, but cooler air’s coming soon and might bring a little rain to both the coast and inland spots.

The update aired on Saturday morning’s First Alert weather segment. Mintz was pretty clear about when this stretch of mild weather wraps up and what people from San Rafael to Sausalito might see as early as next week.

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If you’re thinking about some outdoor time in Mill Valley, Novato, or Fairfax, this forecast could help you figure out the best timing. Marin’s microclimates can be tricky, so it’s always good to have a heads-up.

Marin County’s Weekend Warmth: What to Expect

This week’s warmth feels like a gift for anyone who loves being outside in San Anselmo, Corte Madera, or Belvedere. Most towns are getting dry, sunny days and mild afternoons.

But let’s not get too comfortable—this pattern isn’t sticking around. A cooler air mass is moving in from the north, and the warmth is expected to fade.

Whether you’re by the water in Sausalito or up in the hills above Ross, the advice is pretty much the same: soak up the dry days now. A shift toward more unsettled weather is just around the corner.

Rain Outlook: When the Changes Start

Mintz pointed out that the most noticeable change comes early next week. Don’t worry about any wild storms, but expect a moderate cooldown and a higher chance of rain as Monday arrives and the week gets going.

The forecast says rain could start at the beginning of the week—not over the weekend. So, if you’ve got outdoor plans in places like San Rafael, Mill Valley, or Novato, you might want a backup in case showers show up.

Coastal spots like Sausalito, Tiburon, and Larkspur could get some drizzle. Inland areas—think San Geronimo, San Rafael, and Fairfax—may feel cooler and see a few showers.

Honestly, it’s worth keeping an eye on the sky Sunday night and Monday morning to catch any change in the weather.

  • Plan outdoor activities now while temperatures stay comfortable in Marin’s beach communities and valley towns. San Rafael’s riverfront paths, Sausalito’s waterfront, and Tiburon’s shoreline are all good bets while it’s dry.
  • Keep rain gear handy for Monday and beyond, especially in coastal towns like Sausalito, Belvedere, and Point Reyes Station where drizzle might turn into light showers.
  • Prepare for cooler mornings and evenings across the North Bay foothills and along the Tamalpais corridor, including Mill Valley and San Anselmo. Temperatures could dip compared with Saturday’s warmth.

What This Means for Marin Communities

For folks in Corte Madera, Larkspur, and Novato, the message is practical: the weekend sun isn’t going away, but the air’s going to feel crisper later in the week.

Parks and trail systems—from the Marin Headlands near Sausalito to Mount Tamalpais above Fairfax—will be at their best during the dry days. Showers could dampen those after-work strolls starting Monday.

It’s a good time to balance your outdoor plans with an umbrella and a couple of light layers. Families heading to farmers markets in San Anselmo or community events in Marin City might want to have an indoor backup in case showers roll through.

City-by-City Forecast Highlights

  • San Rafael—Dry and mild through the weekend. Expect a cooler stretch and a modest chance of rain early next week. Mornings might feel chilly, but afternoons could turn pleasant if the sun peeks out between systems.
  • Novato—Pretty much the same setup as San Rafael. The weekend looks friendly, but things turn cooler and maybe a bit wetter as the new week starts.
  • Mill Valley, Corte Madera, Larkspur—Coastal air keeps the weekend comfortable. Watch for a slight cooldown and maybe some showers on Monday or Tuesday.
  • Sausalito, Tiburon, Belvedere—These waterfront towns get a bit more wind and shifting sea breezes. Drizzle could show up, and temperatures might dip after the weekend.
  • San Anselmo, San Geronimo, Fairfax—Inland areas could catch the cooler air a little sooner. If you’re heading out in the evening, especially downtown or on hillside trails, bring an extra layer just in case.
  • Ross, Point Reyes Station—Cooler weather looks more consistent here. Early in the week, expect plenty of clouds and some low coastal mist.

Local weather can be quirky from one Marin town to the next. Folks from Marin City to Belvedere might want to check Saturday Morning’s First Alert for the latest on wind, clouds, and any rain risk. For now, it’s probably best to soak up the last weekend sun at your favorite coastal or hillside spot, and keep a jacket handy for a possible cooldown and a little rain as the workweek kicks in. If you want more precise, town-by-town updates, stick with your usual Marin County newsroom—there’s always something new brewing in the forecast.

 
Here is the source article for this story: Saturday morning First Alert Weather forecast 3/28/26

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Joe Hughes
Joe Harris is the founder of MarinCountyVisitor.com, a comprehensive online resource inspired by his passion for Marin County's natural beauty, diverse communities, and rich cultural offerings. Combining his love for exploration with his intimate local knowledge, Joe curates an authentic guide to the area featuring guides on Marin County Cities, Things to Do, and Places to Stay. Follow Joe on Facebook, Twitter, and Instagram.
 

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