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Castaic weather in September (California, United States of America)

What kind of temperatures can you expect in Castaic during September? This guide provides the necessary weather information for your travel plans.

Temperatures

The weather in Castaic is usually perfect in September, characterized by very high temperatures and almost no rainfall. September is part of summer. Expect daytime highs to reach approximately 33°C, with nighttime lows dipping to around 16°C. The average temperatures are warm, but some days will be hotter. Make sure to dress in light, breathable clothing and drink plenty of water.

Precipitation

Castaic in September usually receives almost no rainfall, averaging around 3.9 mm for the month. You can typically expect a single day days of rain this month, based on climate records.

Average sunshine

Expect a lot of sunshine this month, with about 278 hours of sunny weather. The abundant sunlight creates a lively and bright atmosphere.

So this is a great month to visit if you prefer dry days with pleasant temperatures. February, March, April, May, June, September, October and November typically offer the most optimal weather. In contrast, August tends to have less optimal conditions.

Need inspiration to choose your next destination? Our innovative weather planner helps you discover the perfect getaway tailored to your ideal climate conditions.

 

Castaic, monthly averages in September

Min TemperatureMin Temperature 16°C  
Max TemperatureMax Temperature 33°C  
Chance of RainChance of Rain 2%  
PrecipitationPrecipitation 3.9 mm  
Rainy daysRainy days a single day  
HumidityHumidity 67% *  
SunshineSunshine 278 hours *  
Percentage SunshinePercentage Sunshine 75% *  
Data from: Los Angeles, the United States of America (65 KM, 40 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
10/10
Cycling
8/10
Walking
8/10
Barbeque
10/10
Camping
10/10
Outdoor sports
8/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Castaic.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.