Riverside–San Bernardino wakes up Wednesday under patchy fog that should burn off by 11 AM PT, giving way to full sunshine and a high near 90°F — a classic early-June combo for the Inland Empire. If you’re heading to Fairmount Park, Box Springs Mountain, or anywhere across the valley today, plan for serious afternoon heat and start hydrating early.
Today’s Setup
The National Weather Service says fog will linger through mid-morning — expect reduced visibility near the foothills and along the I-215 corridor before skies clear. Once the sun takes over, temperatures climb fast toward 90°F. West winds at 0 to 10 mph with occasional gusts to 20 mph provide a little movement, but stay smart about it. Keep an insulated water jug 1 gallon in the car, and if your home doesn’t have central air, a portable window AC unit makes a real difference this week.
Best Window To Be Outside
Your best bet for a morning run along the Santa Ana River Trail, yard work, or garden watering is before 9:30 AM. After that, heat accelerates quickly. Evening walks are comfortable — tonight’s low settles near 61°F under mostly clear skies with a light southwest breeze. For outdoor plans, the bookend hours are your friend.
Heat Risk This Week
The National Weather Service notes that high pressure is pushing Inland Empire temperatures 4 to 8 degrees above average today and 5 to 10 degrees above average on Thursday. No severe weather or excessive rainfall applies to our area — heat is the main story. Keep garden watering to the cooler morning hours to protect plants and conserve water. Check out outdoor gear deals to stay stocked up for the week ahead.
Angels at Angel Stadium — Thursday, June 4
The Los Angeles Angels host the Colorado Rockies at Angel Stadium on Thursday, and it will be fully sunny with a high near 91°F. Afternoon tailgating will be warm, so dress for it: a Los Angeles Angels fitted cap gives you solid sun coverage, and your Los Angeles Angels jersey keeps things light in the heat. Still need seats? Get tickets on SeatGeek or Find tickets on StubHub before the game fills up.
Dinner Idea: Too Hot to Cook
Skip the oven tonight. A cold Thai noodle salad, build-your-own wrap bar, or smoothie bowls are the perfect call when it’s 90°F outside. A high-powered blender handles smoothies and chilled sauces in seconds. Pour everything into an insulated tumbler 30oz to keep drinks cold through dinner. Need ingredients? You can order groceries on Amazon and have everything delivered to your door.
Next Few Days
Thursday peaks near 91°F — the warmest day of the stretch and well above average for early June. Friday cools slightly to near 89°F as the high pressure begins to back off. The weekend brings genuine relief: the National Weather Service says a low pressure system moving into the western states will deepen the marine layer and push cooling back into the Inland Empire, with coastal cloud cover potentially reaching the mountain slopes by early Sunday morning. If the cooler weekend has you thinking about a float trip, the Score This 2-Person Intex Float with Built-In Cooler for $24 is a timely find. Early next week trends warmer again.
