Honestly, if you're looking at the 10 day weather forecast for Anaheim California right now, you might be a little confused. One minute it's eighty degrees and sunny, and the next you're seeing "mostly cloudy" with a hint of rain. Welcome to January in Orange County. It’s that weird time of year where the "Happiest Place on Earth" acts like it can't decide if it wants to be a desert or a coastal rainforest.
Most people think California is just eternal summer. They pack shorts, a tank top, and maybe a light hoodie if they’re feeling cautious. Big mistake.
The Reality of the 10 Day Forecast
Right now, as of Sunday, January 18, 2026, Anaheim is sitting in a bit of a heat spike. Today is hitting a high of 81°F. That’s basically perfect pool weather, right? But look at the low for tonight: 47°F. That is a 34-degree swing. You've basically gone from Miami in the afternoon to Seattle at midnight.
If you are planning to be at Disneyland or hanging out near the Anaheim Convention Center over the next week, you have to play the long game. The temperatures are actually going to start a slow, steady slide.
- Monday, Jan 19 (MLK Day): Still beautiful. High of 76°F, low of 46°F.
- Tuesday, Jan 20: A slight bump back to 77°F.
- Wednesday, Jan 21: The clouds start rolling in. We drop to 73°F.
- Friday, Jan 23: This is where the "winter" vibes kick in. We’re looking at a high of 68°F.
By next weekend, specifically Saturday, January 24, the high is only hitting 68°F with a 20% chance of rain at night. It’s not a washout, but it’s definitely "jeans and a real jacket" weather.
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Why the Forecast Keeps Shifting
You’ve probably heard of La Niña. For most of late 2025, the experts at NOAA were predicting a bone-dry winter for Southern California. But as we’ve seen in the first few weeks of 2026, the Pacific Ocean doesn't always follow the script. We are currently in a transition toward "ENSO-neutral" conditions.
What does that mean for your vacation? Basically, unpredictability.
When the system is neutral, we lose that big high-pressure ridge that usually blocks storms. This is why you see those 10% and 15% rain chances peppered throughout the next ten days. It’s not a tropical storm; it’s just the atmosphere being indecisive.
What to Actually Pack (The Expert List)
Don't be the person shivering in the 45-minute line for Space Mountain because you thought "it’s California, it’s always warm."
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- Layers are your religion. Start with a t-shirt. Add a flannel or a light sweater. Finish with a windbreaker or a denim jacket.
- The "Sun Factor." Even when it’s 68 degrees, the SoCal sun is intense. The UV index is hovering around 3 for most of the next week. It sounds low, but if you’re outside for eight hours, you’ll feel it.
- Footwear. If there’s a 15% chance of rain on Friday or Saturday, your mesh sneakers are going to get soaked. Bring something with a bit more substance.
The Secret to Anaheim in Late January
If you can handle the cooler temperatures toward the end of this 10 day weather forecast for Anaheim California, you’re actually winning.
Why? Because the crowds usually thin out when the thermometer drops below 70. Local Californians think 65 degrees is freezing. They stay home. You, however, can walk onto Big Thunder Mountain with a 20-minute wait while wearing a comfortable hoodie.
Also, keep an eye on the wind. We’re seeing very light breezes—mostly around 3 to 6 mph coming from the South or Southwest. This means we don't have to worry about the "Santa Ana" winds, which are those hot, dusty gusts that make everyone’s allergies go crazy. It’s going to be "damp-ish" and cool, which is actually great for the local air quality.
Actionable Advice for Your Trip
- Check the humidity. It’s hovering between 29% and 64% this week. If you have hair that reacts to moisture, Friday and Saturday (the humid days) are your "hat days."
- Morning Strategy. The sun doesn't really start warming things up until about 10:00 AM. If you're heading out at 8:00 AM, it will feel like 48°F. Dress for the morning, not the lunch hour.
- The Rain Gamble. Don't cancel plans over a 15% rain chance. In Anaheim, that usually means a 10-minute drizzle that clears up the air and makes the sunset look incredible.
Basically, enjoy the heat today and Monday, but keep that sweater handy for the back half of the week. Southern California "winter" is just a cooler version of everyone else's spring, so enjoy the lack of snow and the manageable crowds.
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The best move right now is to prepare for a cooling trend. If you're arriving toward the end of the week, skip the heavy summer gear and focus on versatile mid-weights. You'll be the most comfortable person in the park.