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Riverside–San Bernardino, CA skyline — local weather forecast and conditions
Riverside–San Bernardino, CA Photo: Moaaz Baig
Weather Riverside–San Bernardino, CA

Riverside–San Bernardino Weather Friday: Patchy Morning Fog, Sunny High of 84°F

Best Window Avoid flooded roads until warnings expire
Rain Risk Flooding active
What To Wear / Bring Turn around at flooded roads; keep alerts on
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7-Day Forecast

Fri 84°Patchy Fog t...
Sat 87°Patchy Fog t...
Sun 90°Sunny
Mon 95°Sunny
Tue 88°Sunny
Wed 85°Sunny
Thu 84°Sunny

Riverside–San Bernardino weather today features patchy morning fog giving way to sunny skies and a high near 84°F—a beautiful spring day across the Inland Empire, though warm enough to hint at the heat building for the weekend.

Today’s Setup

A weak coastal eddy is pushing marine layer clouds inland from the south this morning, so expect patchy fog through about 11 AM, particularly in lower-lying areas around the San Bernardino Valley and toward Joshua Tree approaches. West winds 0 to 15 mph (gusting to 25 mph) will help burn off that fog by late morning. Once it clears, you’re looking at full sunshine and pleasant mid-80s—ideal conditions for outdoor work or recreation.

Best Window To Be Outside

After 11 AM through sunset (around 8 PM PT) is your sweet spot. The fog clears, winds are manageable, and temperatures will be in the low-to-mid 80s. If you’re planning a round at a local course, this is prime time—check out the Best Golf Balls for High Handicappers in 2026: Tested, Ranked & Compared if you’re refreshing your bag. Families heading to parks like Box Springs Mountain or the Santa Ana River Trail should bring a Stanley quencher tumbler to stay hydrated; even 84°F feels warmer with direct sun exposure.

Heat Building This Weekend

Don’t get too comfortable with today’s temps. The National Weather Service Area Forecast Discussion warns that an upper-level ridge of high pressure will expand and strengthen through early next week, with Sunday and Monday bringing moderate to major heat risk in the low deserts and minor to moderate heat risk in the valleys—temperatures 15 to 20 degrees above average. This is when allergy season can spike too, so sensitive folks should monitor air quality and consider keeping hypoallergenic pillow cover sets in your bedroom to reduce nighttime irritation.

Friday Night Into Saturday

Friday night stays mostly clear with patchy fog developing after 2 AM PT; lows around 59°F. Saturday morning brings another round of patchy fog before 8 AM, then sunny skies and a high near 87°F. Perfect weather for the Los Angeles Dodgers vs. Atlanta Braves at Dodger Stadium on Saturday, May 10th—grab your Los Angeles Dodgers jersey or Los Angeles Dodgers fitted cap if you’re heading to the game, and plan to arrive early to enjoy the sunny tailgating conditions. Find tickets on SeatGeek or Get tickets on StubHub.

What To Wear Or Bring

Layers are your friend through Friday night. Start with a light jacket for the fog, then shed it by mid-morning. Sunscreen is non-negotiable—we’re heading into UV-intense season. If you’re grilling this weekend (a perfect time for that Smoke Tri-Tip Like Brisket setup), grab your patio furniture set and a picnic basket set for 4 now while conditions are dry; next week’s heat will make outdoor prep less comfortable.

Next Few Days

Saturday stays sunny and warm (high 87°F), with patchy fog clearing by 8 AM PT. Sunday and Monday will be notably hotter—the warmest days of the forecast period—so plan indoor or early-morning activities if you’re heat-sensitive. A gradual cooling trend begins Tuesday through Thursday, though temperatures remain above average. No rain is expected through at least mid-week, so fire danger awareness stays important as we head into late spring.

For dinner tonight, a simple stir-fry or pasta works perfectly with these mild conditions—nothing too heavy before a warm night. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.

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