Weather · September
Whittier weather in September
Average highs of 85°F, lows of 65°F and 0.10 in of rain, from 30 years of weather records.
September is Whittier’s 2nd warmest month, with average highs of 85°F and lows of 65°F. That is 1° cooler than August, and 9° above the yearly average high.
- Average high
- 85°F
- Average low
- 65°F
- Precipitation
- 0.10 in
- Wet days
- 1
- Sunrise · sunset
- 6:35 AM · 6:59 PM
What to wear in September
- Warm days: shorts and T-shirts.
What September weather is good for
What’s on in Whittier in September
Guides for this month: Halloween in Whittier.
See all upcoming events and school days off.
September compared with the months around it
Planning a trip? See the best time to visit Whittier and today’s forecast.
Questions
How hot does it get in Whittier in September?
Average highs are 85°F and average lows 65°F, for a daily mean of 75°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Whittier in September?
September averages 0.10 in of precipitation over about 1 days with at least 0.01 in. It is the 10th wettest month of the year.
What time is sunset in Whittier in September?
Around mid-September the sun rises about 6:35 AM and sets about 6:59 PM, for roughly 12.4 hours of daylight.
Is September a good time to visit Whittier?
The mildest months for visiting are May, June, July. September is warm, with Halloween events.
NOAA U.S. Climate Normals 1991–2020, Fullerton Muni Ap station (7 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.