Riverside–San Bernardino weather today brings partly sunny skies and a cool high near 68°F, with west winds of 5 to 15 mph gusting as high as 25 mph—noticeably below our typical May temperatures.
A low-pressure system off the central California coast is moving inland and spreading cooling through Southern California through Tuesday. According to the National Weather Service, inland areas like ours will see highs 10 to 15 degrees below average, with gusty winds that could reach 35 to 45 mph in the mountains and deserts, and isolated gusts up to 60 mph. The bigger story, though, is the chance of showers arriving late this evening through Tuesday morning.
What to expect today and tonight:
Monday afternoon will feel crisp—bring a light jacket if you’re heading to Angel Stadium for the Los Angeles Angels vs. Chicago White Sox game on Tuesday, May 5th. Tailgating conditions will be cool and breezy; consider grabbing a Los Angeles Angels jersey or Los Angeles Angels fitted cap to stay comfortable while cheering on the team. You can Find tickets on StubHub or Get tickets on SeatGeek if you’re planning to catch the series.
After sunset around 8 PM, a slight chance of rain showers (20% probability) develops after 11 PM, with new rainfall amounts less than a tenth of an inch possible. The Weather Prediction Center confirms the probability of flash flooding is less than 5 percent, so no flood concerns here. Still, if you’re planning outdoor activities near parks like Fairmount Park in Riverside or the San Bernardino National Forest trails, wrap up before dark.
Tuesday will be similar—mostly sunny with a high near 67°F and a lingering 20% chance of showers before 11 AM. By Wednesday, we’ll dry out completely and begin a substantial warming trend heading into the weekend.
Practical tips for your week:
If allergies are bothering you with the cooler, shifting air masses, keep kids allergy chewables Zyrtec on hand—the change in wind direction and moisture can trigger seasonal reactions. For outdoor enthusiasts, today’s wind makes it a great day to stay indoors or hit covered venues. If you’re planning to grill later in the week once the weather stabilizes, stock up on supplies now; you can order groceries on Amazon and have everything delivered, including charcoal, marinades, and fresh meats for a mid-week cookout.
For those heading to the Joshua Tree area or Big Bear for a weekend escape, conditions will warm significantly by Saturday and Sunday, making it ideal for hiking and outdoor adventures—just pack layers for the cooler mornings.
The outlook ahead:
After Tuesday’s showers clear, expect dry and warming conditions Wednesday through next week. High temperatures will climb 10 to 15 degrees above average inland by Sunday, with the lower deserts potentially reaching extreme heat by Saturday. It’ll be a quick flip from today’s crisp 68°F to near-record warmth by the weekend.
