Honestly, if you've lived in the Inland Empire for more than a week, you know the vibe. You wake up in Redlands, it’s a crisp 46 degrees, and you’re reaching for that heavy Patagonia puffer. By lunch? You’re sweating through your shirt at a sidewalk table on State Street because it hit 80 degrees.
That’s just the weather Redlands CA hourly reality. It's a microclimate rollercoaster.
Today, January 15, 2026, is a textbook example of why looking at just the "daily high" is a trap. We are seeing a massive 34-degree swing between the morning low and the afternoon peak. If you’re planning your day around a single number, you’re basically guaranteed to be dressed wrong for at least half of it.
The Morning Chill vs. The 3 PM Heat
Right now, the hourly breakdown shows things stayed pretty chilly through the early morning. Most of the local stations near the University of Redlands and downtown were hovering in the high 40s until the sun cleared the San Bernardino Mountains.
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But here is where it gets weird.
Because we’re sitting in a basin, that cold air pools at night. As soon as the sun hits, the mercury doesn't just climb; it jumps. By 10 AM, we’re usually already in the 60s. By 2 PM or 3 PM today, we are hitting that forecasted high of 80°F.
Why the humidity is lying to you
You might notice the humidity dropping into the 30% range this afternoon. In other places, that’s just "dry." In Redlands, that’s the signal. It means the maritime influence from the coast is totally blocked, and we’re breathing that high-desert air.
- 6 AM: 46°F (Coffee run? Wear layers.)
- 12 PM: 72°F (Perfect for a walk at Prospect Park.)
- 3 PM: 80°F (Actually hot. Find some shade.)
- 7 PM: 65°F (The rapid cooling begins.)
Those "Devil Winds" and Your Hourly Plans
We can't talk about the weather Redlands CA hourly without mentioning the Santa Anas. Luckily, today the winds are staying relatively calm—just light and variable. But when those northeast gusts kick in, the hourly forecast goes out the window.
Santa Anas are basically a giant hair dryer blowing over the mountains. They compress the air, which heats it up at an insane rate—almost 30°F for every mile the air descends. This is why you’ll sometimes see Redlands hitting 90 degrees in the middle of winter while the rest of the country is freezing.
If you see NNE winds hitting 15 mph in the hourly tracker, expect the temperature to outperform the forecast by five degrees.
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Making the Most of the 80-Degree Peak
Since it’s a "warm" winter day, the strategy is all about the mid-afternoon window. If you're heading to Kimberly Crest for a garden tour, do it before 4 PM. Once the sun dips behind the hills toward Loma Linda, the temperature doesn't just fade—it drops like a stone.
By 8 PM tonight, we’re looking at 60°F. By 11 PM, it’s back down to 53°F.
Basically, your car needs to be a mobile wardrobe. Keep the jacket in the trunk, wear a tee-shirt for the afternoon, and don't be surprised when the "Pleasant" rating on your weather app turns to "Cool" before you've even finished dinner downtown.
Actionable Advice for Redlands Locals
- The 30-Degree Rule: In Redlands, always assume the gap between the low and high is at least 30 degrees during a clear winter day. Plan your outfit for the range, not the average.
- Hydrate Early: With humidity dipping to 30%, you'll lose moisture faster than you think, even if it doesn't feel "desert hot" yet.
- Air Quality Check: Keep an eye on the "Poor" air quality ratings that often crop up in the evenings when the air becomes stagnant in the basin. If you have asthma, move your run to the morning hours.