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
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's fiery hot 98.2°F (36.8°C) to a tropical 91.6°F (33.1°C). Against the backdrop of high daytime temperatures, an average low-temperature of 63°F (17.2°C) is noted during September nights in Mendota.Humidity
In Mendota, California, the average relative humidity in September is 35%.Rainfall
January through July, September through December are months with rainfall in Mendota. September is the first month it rains in Mendota. Throughout September, in the average 1.5 rainfall days, it receives 0.08" (2mm) of precipitation. In Mendota, during the entire year, the rain falls for 59.3 days and collects up to 8.86" (225mm) of precipitation.Daylight
The average length of the day in September in Mendota, California, is 12h and 24min.On the first day of September, sunrise is at 6:33 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:45 pm PDT.
Sunshine
In Mendota, the average sunshine in September is 11.4h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Mendota in September?
What is the average humidity in September in Mendota?
When does it start to rain in Mendota?
How many hours of daylight does Mendota have in September?
What time are sunrise and sunset in September in Mendota?
How many hours of sunshine does Mendota have in September?
What is the UV index intensity in September in Mendota?
Average temperature in September
Mendota, CA
- Average high temperature in September: 91.6°F
The warmest month (with the highest average high temperature) is July (99.9°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is December (42.3°F).
Average pressure in September
Mendota, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Mendota, CA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in September
Mendota, CA
- Average humidity in September: 35%
The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is July (31%).
Average rainfall in September
Mendota, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is March (1.69").
The driest month (with the least rainfall) is August (0").
Average rainfall days in September
Mendota, CA
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (11.4 days).
The month with the least rainy days is August (0.6 days).
Average daylight in September /
Average sunshine in September
Mendota, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 24min).
Average sunshine days in September
Mendota, CA
- Average sunshine days in September: 27.4 days
The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (18.7 days).
Average UV index in September
Mendota, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Mendota, CA
- Average cloud cover in September: 5
The months with the most cloud cover are March and December (Cloud cover 29).
The months with the least cloud cover are July and August (Cloud cover 4).
Average visibility in September
Mendota, 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).
Mendota, California, USA
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