September weather forecast
Fort Rosecrans, CA

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Weather in September

September, the first month of the autumn in Fort Rosecrans, is still a warm month, with temperature in the range of an average low of 65.3°F (18.5°C) and an average high of 75.2°F (24°C).

Temperature

As Fort Rosecrans, California, welcomes September, the average high-temperature records at a still warm 75.2°F (24°C), marking an insignificant deviation from the prior month. In Fort Rosecrans, September nights cool down to an average of 65.3°F (18.5°C).

Humidity

In Fort Rosecrans, the average relative humidity in September is 70%.

Rainfall

In Fort Rosecrans, during September, the rain falls for 3.7 days and regularly aggregates up to 0.31" (8mm) of precipitation. Throughout the year, in Fort Rosecrans, there are 64.5 rainfall days, and 9.02" (229mm) of precipitation is accumulated.

Daylight

In Fort Rosecrans, the average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:34 pm PDT.

Sunshine

The average sunshine in September in Fort Rosecrans is 10.3h.

UV index

The months with the highest UV index are July through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What is the temperature in September in Fort Rosecrans?

In Fort Rosecrans, 75.2°F (24°C) is the average high-temperature and 65.3°F (18.5°C) is the average low-temperature during September.

What is the average humidity in September in Fort Rosecrans?

The average relative humidity in September in Fort Rosecrans is 70%.

How many days does it rain in September in Fort Rosecrans?

In Fort Rosecrans, California, in September, during 3.7 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

How many hours of daylight does Fort Rosecrans have in September?

The average day length in September in Fort Rosecrans, California, is 12h and 22min.

What time are sunrise and sunset in September in Fort Rosecrans?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:34 pm PDT.

How long on average sun shines in September in Fort Rosecrans?

The average sunshine duration in September in Fort Rosecrans, California, is 10.3h.

What is the month with the highest UV index in Fort Rosecrans?

The months with the highest UV index in Fort Rosecrans are July through September, with an average maximum UV index of 6.

What is the UV index intensity in September in Fort Rosecrans?

In Fort Rosecrans, California, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fort Rosecrans, CA

Average temperature in September - Fort Rosecrans, CA
  • Average high temperature in September: 75.2°F

The warmest month (with the highest average high temperature) is August (75.6°F).
The months with the lowest average high temperature are February and December (63°F).

  • Average low temperature in September: 65.3°F

The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (53.1°F).

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Average pressure in September
Fort Rosecrans, CA

Average pressure in September - Fort Rosecrans, CA
  • Average pressure in September: 29.88"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).

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Average wind speed in September
Fort Rosecrans, CA

Average wind speed in September - Fort Rosecrans, CA
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).

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Average humidity in September
Fort Rosecrans, CA

Average humidity in September - Fort Rosecrans, CA
  • Average humidity in September: 70%

The month with the highest relative humidity is June (76%).
The months with the lowest relative humidity are January and November (61%).

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Average rainfall in September
Fort Rosecrans, CA

Average rainfall in September - Fort Rosecrans, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in September
Fort Rosecrans, CA

Average rainfall days in September - Fort Rosecrans, CA
  • Average rainfall days in September: 3.7 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.8 days).

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Average daylight in September /
Average sunshine in September
Fort Rosecrans, CA

Average daylight in September / Average sunshine in September - Fort Rosecrans, CA
  • Average daylight in September: 12h and 2min

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 2min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in September
Fort Rosecrans, CA

Average sunshine days in September - Fort Rosecrans, CA
  • Average sunshine days in September: 23.9 days

The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is February (20.1 days).

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Average UV index in September
Fort Rosecrans, CA

Average UV index in September - Fort Rosecrans, CA
  • Average UV index in September: 6

The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in September
Fort Rosecrans, CA

Average cloud cover in September - Fort Rosecrans, CA
  • Average cloud cover in September: 12

The months with the most cloud cover are March, May and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in September
Fort Rosecrans, CA

Average visibility in September - Fort Rosecrans, 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).

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Fort Rosecrans, California, USA

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