September weather forecastEstelle, CA
September
Weather in September
The first month of the autumn, September, is still a torrid month in Estelle, California, with an average temperature fluctuating between 98.4°F (36.9°C) and 79.7°F (26.5°C).Temperature
As Estelle enters September, the average high-temperature subtly lowers from the a blistering 105.4°F (40.8°C) of August to a fiery hot 98.4°F (36.9°C). Estelle usually reports an average low-temperature of 79.7°F (26.5°C) during the month of September.Humidity
In Estelle, the average relative humidity in September is 26%.Rainfall
In September, the rain falls for 4.5 days. Throughout September, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 34.3 rainfall days, and 3.46" (88mm) of precipitation is accumulated.Daylight
In Estelle, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:06 pm. On the last day of September, sunrise is at 6:36 am and sunset at 6:27 pm PDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
The average daily maximum UV index in September in Estelle, California, is 8. A UV Index of 8 to 10 symbolizes a very high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 8 in September transforms into the following instructions:
Remember to safeguard yourself. Rapid damage can occur to skin and eyes without protection. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Estelle, CA
- Average high temperature in September: 98.4°F
The warmest month (with the highest average high temperature) is July (105.8°F).
The month with the lowest average high temperature is December (65.8°F).
- Average low temperature in September: 79.7°F
The month with the highest average low temperature is August (84.7°F).
The coldest months (with the lowest average low temperature) are January and December (50.4°F).
Average pressure in September
Estelle, CA
- Average pressure in September: 29.81"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.77"Hg).
Average wind speed in September
Estelle, CA
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in September
Estelle, CA
- Average humidity in September: 26%
The month with the highest relative humidity is December (41%).
The month with the lowest relative humidity is June (22%).
Average rainfall in September
Estelle, CA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is May (0").
Average rainfall days in September
Estelle, CA
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is May (0.8 days).
Average daylight in September /
Average sunshine in September
Estelle, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 12min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Estelle, CA
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is May (30 days).
The month with the least sunshine days is July (19 days).
Average UV index in September
Estelle, CA
- Average UV index in September: 8
The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Estelle, CA
- Average cloud cover in September: 7
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Estelle, 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).
