September weather forecastFair Oaks, CA
September
Weather in September
The first month of the autumn, September, is still a hot month in Fair Oaks, California, with an average temperature fluctuating between 58.8°F (14.9°C) and 88.5°F (31.4°C).Temperature
With the arrival of September, Fair Oaks's average high-temperature registers at a still hot 88.5°F (31.4°C), indicating a subtle variation from the previous month. Fair Oaks's September nights bring a significant temperature shift, averaging at a mild 58.8°F (14.9°C).Heat index
In September, the average heat index is computed to be a hot 89.6°F (32°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.Observations indicate that the heat index values are for shady locations with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
The months with the lowest humidity are July and September, with an average relative humidity of 43%.Rainfall
In September, the rain falls for 2.4 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. In Fair Oaks, California, during the entire year, the rain falls for 67.3 days and collects up to 10.79" (274mm) of precipitation.Snowfall
In Fair Oaks, snow does not fall in January through November.Daylight
In Fair Oaks, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:35 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm PDT.
Sunshine
In Fair Oaks, the average sunshine in September is 11.2h.UV index
The average daily maximum UV index in September in Fair Oaks is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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).
Average daylight in September /
Average sunshine in September
Fair Oaks, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- 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).
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).
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).
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).
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).
