September weather forecast
Mesaville, CA

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Weather in September

September, the first month of the autumn in Mesaville, is also a fiery hot month, with an average temperature ranging between min 79.9°F (26.6°C) and max 97.7°F (36.5°C).

Temperature

September's arrival aligns with a minor decrease in average high-temperatures, from August's extremely hot 104.2°F (40.1°C) to a torrid 97.7°F (36.5°C). An average nighttime temperature of 79.9°F (26.6°C) is recorded during September.

Humidity

In September, the average relative humidity is 25%.

Rainfall

In Mesaville, during September, the rain falls for 4.1 days and regularly aggregates up to 0.31" (8mm) of precipitation. Throughout the year, there are 34.2 rainfall days, and 2.99" (76mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:13 am and sunset at 7:03 pm. On the last day of September, sunrise is at 6:32 am and sunset at 6:23 pm PDT.

Sunshine

In September, the average sunshine is 10.1h.

UV index

In September, the average daily maximum UV index is 8. A UV Index of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 8 translates into the following recommendations:
Ensure precautions are always in place. The risk to skin and eyes is high without them. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Mesaville in September?

During September, Mesaville experiences an average high-temperature of 97.7°F (36.5°C) and a low-temperature of 79.9°F (26.6°C).

What is the average humidity in September?

The average relative humidity in September is 25%.

How many days does it rain in September?

In September, the rain falls for 4.1 days. Throughout September, 0.31" (8mm) of precipitation is accumulated.

What is the average length of the day in September?

In Mesaville, the average day length in September is 12h and 22min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:13 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 6:23 pm PDT.

How long on average sun shines in September?

In Mesaville, the average sunshine duration in September is 10.1h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 8. A UV Index of 8 to 10 symbolizes a very high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Mesaville, CA

Average temperature in September - Mesaville, CA
  • Average high temperature in September: 97.7°F

The warmest month (with the highest average high temperature) is July (105.1°F).
The month with the lowest average high temperature is December (62.8°F).

  • Average low temperature in September: 79.9°F

The month with the highest average low temperature is August (86.2°F).
The coldest month (with the lowest average low temperature) is December (48.2°F).

Average pressure in September
Mesaville, CA

Average pressure in September - Mesaville, CA
  • Average pressure in September: 29.79"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

Average wind speed in September
Mesaville, CA

Average wind speed in September - Mesaville, CA
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is November (6.4mph).

Average humidity in September
Mesaville, CA

Average humidity in September - Mesaville, CA
  • Average humidity in September: 25%

The months with the highest relative humidity are January and December (38%).
The month with the lowest relative humidity is June (18%).

Average rainfall in September
Mesaville, CA

Average rainfall in September - Mesaville, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is July (0.55").
The driest months (with the least rainfall) are May and June (0.04").

Average rainfall days in September
Mesaville, CA

Average rainfall days in September - Mesaville, CA
  • Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is July (7.3 days).
The month with the least rainy days is May (1.2 days).

Average daylight in September /
Average sunshine in September
Mesaville, CA

Average daylight in September / Average sunshine in September - Mesaville, 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: 10h and 0min).

  • Average sunshine in September: 10h and 1min

The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 12min).

Average sunshine days in September
Mesaville, CA

Average sunshine days in September - Mesaville, CA
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (19.1 days).

Average UV index in September
Mesaville, CA

Average UV index in September - Mesaville, CA
  • Average UV index in September: 8

The months with the highest UV index are July and August (UV index 9).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Mesaville, CA

Average cloud cover in September - Mesaville, CA
  • Average cloud cover in September: 8

The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in September
Mesaville, CA

Average visibility in September - Mesaville, 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).

Mesaville, California, USA

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