Riverside–San Bernardino is in for a mild, mostly sunny Thursday with a high near 70°F — well below late-May averages, but a genuinely pleasant day to get outside before a warming trend takes hold this weekend.
Today’s Setup
A deep marine layer has been sitting over the Inland Empire all week, keeping temps 15–20 degrees below average for the mountains and in the 60s–70s for valleys, according to the National Weather Service San Diego office. Today’s SW winds of 0 to 15 mph — with gusts up to 25 mph this afternoon — will push some high clouds through but won’t ruin anything. If you’re heading up toward Big Bear, pack a real jacket; mountain highs are running in the 40s–50s right now.
Best Window To Be Outside
Morning through early evening is your window. Mount Rubidoux, Fairmount Park, and the Santa Ana River Trail are all in excellent shape for a run, bike ride, or casual walk. Afternoon gusts to 25 mph are worth noting if you’re setting up anything on the patio. NWS forecasters flag a slight chance of light showers returning late Thursday night — around 11 PM PT through early Friday morning — so plan backyard grilling or outdoor dinners before 9 PM to stay dry. Check the Riverside weather forecast for updates as that timing firms up.
Allergy Alert
The marine layer and onshore flow have been stirring valley pollen, and the warming-and-drying trend ahead typically spikes grass counts. If you’ve been sneezing, run a HEPA air purifier indoors and keep a saline sinus rinse Neti pot kit handy — especially before and after outdoor time. Find more tips and outdoor gear deals to help you stay comfortable as summer conditions approach.
Weekend Events: Concerts, Comedy, and Baseball
Friday warms to near 74°F and the shower risk clears by dawn — ideal for the Pitbull “I’m Back” tour with special guest Lil Jon at North Island Credit Union Amphitheatre on Friday, May 29. Evening temps will be comfortable in the mid-60s. Get tickets on SeatGeek or Find tickets on StubHub, and rep the show with a Pitbull t-shirt or Pitbull hoodie.
Saturday and Sunday bring the real warmth. Jeff Dunham plays the Los Angeles County Fair on Saturday, May 30, and Maná: Vivir Sin Aire Tour lands at Acrisure Arena at Greater Palm Springs on Sunday, May 31 — both solid outdoor-friendly nights.
Over at Dodger Stadium, the Los Angeles Dodgers host the Philadelphia Phillies on May 30 and May 31. Weekend temps could reach the 80s, so grab a Los Angeles Dodgers fitted cap for the sun, and a Los Angeles Dodgers jersey to show out in the stands.
Dinner Tonight
A mild 70° evening is perfect for something light — pasta primavera or a quick veggie stir-fry keeps things easy without heating up the house. As the weekend warms up, fire up the propane gas grill for Saturday’s backyard session. Need ingredients tonight? You can order groceries on Amazon and have everything for dinner delivered to your door.
Next Few Days
Friday’s 74°F gives way to a significant warm-up: NWS forecasters expect inland areas to climb another 10–15°F by Saturday, reaching closer to average. By next Wednesday, the Inland Empire could run 5–10 degrees above average. The marine layer will become shallower each day — enjoy the mild window today while it lasts.
