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 commencement of September introduces an average high-temperature of a still warm 83.3°F (28.5°C), closely mirroring the preceding month. A sharp reduction from the daytime highs is witnessed during September, with nighttime temperatures averaging a low of 54.1°F (12.3°C).Heat index
September's heat index is estimated at a hot 86°F (30°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.When referencing the heat index, its values are suitable for shady environments and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
With an average relative humidity of 58%, September is the least humid month.Rainfall
The months with the least rainfall are June through September Rain falls for 1.7 days and accumulates 0.04" (1mm) of rain.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:50 pm PDT.
Sunshine
In Chittenden, the average sunshine in September is 11.3h.UV index
In September, the average daily maximum UV index in Chittenden is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
How hot is it in Chittenden in September?
What is the least humid month in Chittenden?
What is the average humidity in September in Chittenden?
What is the driest month in Chittenden?
How much does it rain in Chittenden in September?
How many hours of daylight does Chittenden have in September?
What time are sunrise and sunset in September in Chittenden?
How long on average sun shines in September in Chittenden?
How high is the UV index in September in Chittenden?
Average temperature in September
Chittenden, CA
- Average high temperature in September: 83.3°F
The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is December (57.6°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is August (54.3°F).
The coldest months (with the lowest average low temperature) are February, March and December (40.6°F).
Average pressure in September
Chittenden, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in September
Chittenden, CA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is May (5.3mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).
Average humidity in September
Chittenden, CA
- Average humidity in September: 58%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (58%).
Average rainfall in September
Chittenden, CA
- Average rainfall in September: 0.04"
The wettest month (with the highest rainfall) is December (1.02").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in September
Chittenden, CA
- Average rainfall days in September: 1.7 days
The month with the highest number of rainy days is March (9 days).
The month with the least rainy days is August (0.5 days).
Average daylight in September /
Average sunshine in September
Chittenden, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Chittenden, CA
- Average sunshine days in September: 27.8 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (20.6 days).
Average UV index in September
Chittenden, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Chittenden, CA
- Average cloud cover in September: 9
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in September
Chittenden, 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).
Chittenden, California, USA
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