Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Stepping into September, Thousand Oaks records an average high-temperature of a still moderately hot 77°F (25°C), almost consistent with August. Throughout September, an average low-temperature of 62.8°F (17.1°C) is experienced.Humidity
In Thousand Oaks, the average relative humidity in September is 61%.Rainfall
In Thousand Oaks, in September, it is raining for 2.8 days, with typically 0.2" (5mm) of accumulated precipitation. In Thousand Oaks, during the entire year, the rain falls for 51.2 days and collects up to 9.41" (239mm) of precipitation.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:20 pm. On the last day of September, in Thousand Oaks, sunrise is at 6:49 am and sunset at 6:40 pm PDT.
Sunshine
In September, the average sunshine in Thousand Oaks is 10.9h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Thousand Oaks?
What is the average humidity in September in Thousand Oaks?
How many days does it rain in September in Thousand Oaks?
What is the average length of the day in September in Thousand Oaks?
What time are sunrise and sunset in September in Thousand Oaks?
How long on average sun shines in September in Thousand Oaks?
What are the months with the highest UV index in Thousand Oaks?
What is the UV index reading in September in Thousand Oaks?
Average temperature in September
Thousand Oaks, CA
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (60.4°F).
- Average low temperature in September: 62.8°F
The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is February (49.1°F).
Average pressure in September
Thousand Oaks, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in September
Thousand Oaks, CA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are April and December (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Thousand Oaks, CA
- Average humidity in September: 61%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (53%).
Average rainfall in September
Thousand Oaks, CA
- Average rainfall in September: 0.2"
The wettest months (with the highest rainfall) are January and February (1.93").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Thousand Oaks, CA
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is August (1.5 days).
Average daylight in September /
Average sunshine in September
Thousand Oaks, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Thousand Oaks, CA
- Average sunshine days in September: 24 days
The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is February (21 days).
Average UV index in September
Thousand Oaks, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover in September
Thousand Oaks, CA
- Average cloud cover in September: 7
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Thousand Oaks, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Thousand Oaks, California, USA
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