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
The initiation of September records an average high-temperature of a still warm 75.4°F (24.1°C), displaying a near consistency with the previous month. Throughout September, an average low-temperature of 62.6°F (17°C) is experienced in Somis.Humidity
In September, the average relative humidity is 62%.Rainfall
In September, the rain falls for 3 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 47.4 rainfall days, and 7.36" (187mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:29 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:40 pm PDT.
Sunshine
In September, the average sunshine is 10.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during September translates into the following guidance:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Somis in September?
What is the average humidity in September in Somis?
How much does it rain in September?
How many hours of daylight does Somis have in September?
When are sunrise and sunset in September in Somis?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Somis, CA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The months with the lowest average high temperature are February and December (59.9°F).
- Average low temperature in September: 62.6°F
The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).
Average pressure in September
Somis, 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
Somis, CA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (4.7mph).
Average humidity in September
Somis, CA
- Average humidity in September: 62%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall in September
Somis, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is January (1.38").
The driest months (with the least rainfall) are June and August (0.12").
Average rainfall days in September
Somis, CA
- Average rainfall days in September: 3 days
The month with the highest number of rainy days is March (6.4 days).
The month with the least rainy days is August (1.7 days).
Average daylight in September /
Average sunshine in September
Somis, 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 months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Somis, CA
- Average sunshine days in September: 22.2 days
The month with the most sunshine days is October (26.1 days).
The month with the least sunshine days is February (22 days).
Average UV index in September
Somis, CA
- Average UV index in September: 5
The months with the highest UV index are July and August (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
Somis, 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
Somis, 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).
Somis, California, USA
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