The classic Norwalk Town Square sign

Weather · September

Norwalk 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 Norwalk’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 · 7:00 PM

September across the year

  1. 69°46°Jan
  2. 69°48°Feb
  3. 71°52°Mar
  4. 74°54°Apr
  5. 76°58°May
  6. 79°63°Jun
  7. 84°66°Jul
  8. 87°66°Aug
  9. 85°65°Sep
  10. 80°58°Oct
  11. 74°51°Nov
  12. 68°46°Dec

High and low Rain

What to wear in September

  • Warm days: shorts and T-shirts.

September is good for

What’s on in Norwalk in September

See all upcoming events.

Around Norwalk

Norwalk Park Panorama, Norwalk, California
Norwalk Park Panorama, Norwalk, CaliforniaNorthwalker · CC0
Norwalk Town Square Shopping Center sign in Norwalk California
Norwalk Town Square Shopping Center sign in Norwalk CaliforniaNorthwalker · CC0
Historic Sproul House Kitchen, Norwalk
Historic Sproul House Kitchen 01City of Norwalk · CC BY-SA 4.0

See Norwalk

A look around town before you go.

The things that happen in norwalk California video thumbnail

THINGS TO DO · YOUTUBE SHORT

The things that happen in norwalk California

A local activity Short shared by Cyber Morty.

Watch on YouTube ↗
Karate Kid 1984 - Golf N' Stuff Filming Location Tour video thumbnail

THINGS TO DO · YOUTUBE SHORT

Karate Kid 1984 - Golf N' Stuff Filming Location Tour

A local activity Short shared by Nathan Madden .

Watch on YouTube ↗

September compared with the months around it

MonthHighLowRain
August87°F66°F0.00 in
September85°F65°F0.10 in
October80°F58°F0.50 in

Planning a trip? See the best time to visit Norwalk and today’s forecast.

Questions

How hot does it get in Norwalk 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 Norwalk 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 Norwalk in September?

Around mid-September the sun rises about 6:35 AM and sets about 7:00 PM, for roughly 12.4 hours of daylight.

Is September a good time to visit Norwalk?

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 (6.5 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.

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