Honestly, if you’ve lived in the Jewel City for more than a week, you know the drill. One morning you’re grabbing a latte at Highlight Coffee in a light hoodie, and by 2:00 PM, you’re wondering why on earth you didn't wear shorts.
Right now, we are looking at a stretch of weather in glendale ca for 10 days that is basically a masterclass in Southern California’s "winter" mood swings. We are talking about a shift from high-desert heat vibes down to that damp, gray chill that makes everyone forget how to drive on the 2.
The Immediate Outlook: Soak Up the Sun While It Lasts
Today, Sunday, January 18, is a total standout. We hit a high of 77°F with basically zero wind. It's clear, it's dry (24% humidity), and it feels like spring arrived a few months early. If you're planning to hike Brand Park or just hit the Americana, do it now.
Monday and Tuesday (Jan 19-20) keep that energy, hovering around 75°F. But don't let the sunshine fool you into thinking the drought is over or that winter is done. The nights are still dropping into the low 50s, which is typical for our valley geography—the heat just vanishes the second the sun dips behind the Verdugos.
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The Mid-Week "Gray" Shift
Things get kinda weird starting Wednesday, January 21. We’re seeing a transition from "Sunny" to "Cloudy," and the temperature takes a visible hit, dropping to 71°F. By Thursday, we’re looking at 67°F.
Now, here is the part most people get wrong about Glendale weather: the humidity. We’re jumping from a bone-dry 24% today to a projected 60% humidity by Thursday. That 67 degrees is going to feel a lot "heavier" and colder than the numbers suggest. There’s a 25% chance of rain on Thursday, which usually means "enough to get your car dirty, but not enough to water the lawn."
The 10-Day Arc: By the Numbers
If you’re a visual person, here’s how the temperature curve actually looks for this stretch in Glendale.
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- Peak Heat: Sunday (Jan 18) at 77°F.
- The Slump: Friday (Jan 23) is the projected "cold" day, bottoming out at 65°F with a low of 49°F.
- The Recovery: By next Tuesday (Jan 27), we’re climbing back up to a very pleasant 76°F.
Basically, we’re riding a valley-shaped wave. We start high, dip into a cloudy, slightly drizzly trough mid-week, and then climb back into the mid-70s by the time the following week rolls around.
What Actually Matters for Your Planning
It’s easy to look at a 10-day forecast and just see "Sun" or "Cloud." But in Glendale, the real factor is the UV Index. Even on the "cooler" days like Tuesday or Saturday, the UV index is hitting a 3. That’s moderate. If you’re outside for an hour at the Chess Park or walking the dog, you’re still getting significant exposure.
Also, watch the wind. We’re seeing very light breezes—1 to 5 mph—mostly from the South or Southwest. This means the air is going to feel pretty stagnant. If there’s any local construction or typical LA smog, it’s going to hang around a bit more than usual until that slight chance of rain on Friday helps clear the air.
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Real Talk on the Rain
Is it going to pour? Probably not. The data shows the highest probability of precipitation is 25% on Thursday and 20% on Friday.
In Glendale terms, that’s "windshield wiper" weather, not "flood the streets" weather. But because we’ve had such a dry start to the month (humidity as low as 24%), any moisture on the roads is going to bring up all the oil and grime. If you're commuting down Glenoaks or taking the 134, just be careful on those two days. It gets slick fast.
Actionable Advice for Glendalians This Week
- Monday/Tuesday: Perfect for outdoor projects or heavy laundry. The low humidity (31%) means things will dry fast and you won't be sweating through your shirt.
- Wednesday/Thursday: Swap the sunscreen for a light windbreaker. The jump in humidity and the 10-degree temp drop will make the mornings feel significantly more "wintery."
- Friday/Saturday: Keep an eye on the sky. If you have outdoor plans for Saturday, the morning might start "mostly sunny," but the air will still be crisp at 70°F.
The bottom line? We're in a classic January cycle. Enjoy the 77-degree peak today, prep for a gray Thursday, and expect to be back in short sleeves by the middle of next week.
Action Step: If you have sensitive plants or a garden that’s been thriving in this weirdly warm January, keep them watered through Tuesday. Once the humidity spikes on Wednesday, you can probably dial back the irrigation as the air holds more moisture and the temperatures stay below 70.**