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 snowfall in September
- Average snowfall 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
As September commences, the average high-temperature subtly reduces, transitioning from a tropical 88.3°F (31.3°C) in August to a moderately hot 82.4°F (28°C). A significant temperature decrease to an average a cool 54.5°F (12.5°C) characterizes Somerset's nighttime temperatures during September.Heat index
During September, the heat index is appraised at 82.4°F (28°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
The average relative humidity in September in Somerset is 42%.Rainfall
In Somerset, in September, it is raining for 2.6 days, with typically 0.28" (7mm) of accumulated precipitation. Throughout the year, in Somerset, California, there are 86.4 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
In Somerset, snow does not fall in May through October.Daylight
In September, the average length of the day in Somerset is 12h and 25min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:46 pm PDT.
Sunshine
In September, the average sunshine is 11.3h.UV index
The average daily maximum UV index in September in Somerset is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
How hot is it in Somerset in September?
What is the average humidity in September in Somerset?
How much does it rain in Somerset in September?
When it does not snow in Somerset?
How many hours of daylight does Somerset have in September?
What time are sunrise and sunset in September in Somerset?
How long on average sun shines in September in Somerset?
What is the UV index intensity in September in Somerset?
Average temperature in September
Somerset, CA
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (50.7°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is December (36°F).
Average pressure in September
Somerset, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Somerset, CA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Somerset, CA
- Average humidity in September: 42%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is July (39%).
Average rainfall in September
Somerset, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is March (5.98").
The driest month (with the least rainfall) is July (0").
Average rainfall days in September
Somerset, CA
- Average rainfall days in September: 2.6 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is July (0.9 days).
Average snowfall in September
Somerset, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Somerset, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Somerset, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Somerset, CA
- Average sunshine days in September: 26.9 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (13.8 days).
Average UV index in September
Somerset, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in September
Somerset, CA
- Average cloud cover in September: 8
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Somerset, 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).
Somerset, California, USA
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