September weather forecast
Fair Oaks, CA

Weather in September

The first month of the autumn, September, is also a hot month in Fair Oaks, California, with an average temperature varying between 88.5°F (31.4°C) and 58.8°F (14.9°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still tropical 88.5°F (31.4°C). In September, in Fair Oaks, California, the average low-temperature is 58.8°F (14.9°C).

Heat index

In September, the average heat index is evaluated at a tropical 89.6°F (32°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like pregnancy, differences in body mass, height, and shape, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The months with the lowest humidity are July and September, with an average relative humidity of 43%.

Rainfall

In Fair Oaks, during 2.4 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. Throughout the year, in Fair Oaks, there are 67.3 rainfall days, and 10.79" (274mm) of precipitation is accumulated.

Snowfall

In Fair Oaks, snow does not fall in January through November.

Daylight

In September, the average length of the day in Fair Oaks is 12h and 25min.
On the first day of the month, sunrise is at 6:34 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:49 pm PDT.

Sunshine

The average sunshine in September in Fair Oaks is 11.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Fair Oaks?

The average high-temperature, in September, is 88.5°F (31.4°C), while the average low-temperature is 58.8°F (14.9°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in September is evaluated at 89.6°F (32°C).

What are the least humid months in Fair Oaks?

The months with the lowest humidity are July and September, with an average relative humidity of 43%.

What is the average humidity in September in Fair Oaks?

The average relative humidity in September in Fair Oaks, California, is 43%.

How much does it rain in Fair Oaks in September?

In Fair Oaks, in September, during 2.4 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

When it does not snow in Fair Oaks?

In Fair Oaks, snow does not fall in January through November.

How many hours of daylight does Fair Oaks have in September?

The average day length in September in Fair Oaks, California, is 12h and 25min.

What time are sunrise and sunset in September in Fair Oaks?

In September, on the first day of the month, sunrise is at 6:34 am and sunset at 7:35 pm. On the last day of the month, in Fair Oaks, sunrise is at 7:00 am and sunset at 6:49 pm PDT.

How long on average sun shines in September in Fair Oaks?

The average sunshine duration in September in Fair Oaks is 11.2h.

What is the UV index intensity in September in Fair Oaks?

The average daily maximum UV index in September in Fair Oaks is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fair Oaks, CA

Average temperature in September - Fair Oaks, CA
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is July (94.5°F).
The month with the lowest average high temperature is December (54.1°F).

  • Average low temperature in September: 58.8°F

The months with the highest average low temperature are July and August (60.1°F).
The coldest month (with the lowest average low temperature) is December (40.8°F).

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Average pressure in September
Fair Oaks, CA

Average pressure in September - Fair Oaks, CA
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Fair Oaks, CA

Average wind speed in September - Fair Oaks, CA
  • Average wind speed in September: 4.1mph

The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).

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Average humidity in September
Fair Oaks, CA

Average humidity in September - Fair Oaks, CA
  • Average humidity in September: 43%

The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are July and September (43%).

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Average rainfall in September
Fair Oaks, CA

Average rainfall in September - Fair Oaks, CA
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is March (1.97").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in September
Fair Oaks, CA

Average rainfall days in September - Fair Oaks, CA
  • Average rainfall days in September: 2.4 days

The month with the highest number of rainy days is March (12 days).
The months with the least rainy days are June and July (1.3 days).

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Average snowfall days in September
Fair Oaks, CA

Average snowfall days in September - Fair Oaks, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Fair Oaks, CA

Average daylight in September / Average sunshine in September - Fair Oaks, CA
  • Average daylight in September: 12h and 25min

The month with the longest days is June (Average daylight: 14h and 50min).
The month with the shortest days is December (Average daylight: 9h and 31min).

  • Average sunshine in September: 11h and 12min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in September
Fair Oaks, CA

Average sunshine days in September - Fair Oaks, CA
  • Average sunshine days in September: 26.6 days

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is March (18.1 days).

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Average UV index in September
Fair Oaks, CA

Average UV index in September - Fair Oaks, CA
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).

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Average cloud cover in September
Fair Oaks, CA

Average cloud cover in September - Fair Oaks, CA
  • Average cloud cover in September: 8

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in September
Fair Oaks, CA

Average visibility in September - Fair Oaks, 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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