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 snowfall 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 is marked by an average high-temperature of a still tropical 88.7°F (31.5°C), almost identical to the preceding month. Manteca, in September, experiences a marked contrast from daytime zeniths to a steady average low-temperature of 58.3°F (14.6°C).Heat index
The heat index value for September is appraised at a hot 89.6°F (32°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.Realize that the values for the heat index are set for shaded places and light winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
The average relative humidity in September in Manteca, California, is 45%.Rainfall
In Manteca, in September, it is raining for 2.1 days, with typically 0.12" (3mm) of accumulated precipitation. In Manteca, during the entire year, the rain falls for 67.8 days and collects up to 11.22" (285mm) of precipitation.Snowfall
January through November are months without snowfall.Daylight
The average length of the day in September in Manteca is 12h and 25min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:33 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:48 pm PDT.
Sunshine
In Manteca, the average sunshine in September is 11.5h.UV index
The average daily maximum UV index in September in Manteca is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
How hot is it in Manteca in September?
What is the average humidity in September in Manteca?
How many days does it rain in September in Manteca?
When it does not snow in Manteca?
How many hours of daylight does Manteca have in September?
When is the sunrise / sunset in September in Manteca?
How many hours of sunshine does Manteca have in September?
How high is the UV index in September in Manteca?
Average temperature in September
Manteca, CA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).
Average pressure in September
Manteca, 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 (29.91"Hg).
Average wind speed in September
Manteca, CA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is June (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in September
Manteca, CA
- Average humidity in September: 45%
The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is July (42%).
Average rainfall in September
Manteca, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in September
Manteca, CA
- Average rainfall days in September: 2.1 days
The month with the highest number of rainy days is March (12 days).
The month with the least rainy days is August (1.2 days).
Average snowfall days in September
Manteca, 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
Manteca, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Manteca, CA
- Average sunshine days in September: 26.9 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (17.5 days).
Average UV index in September
Manteca, 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 January, February, November and December (UV index 3).
Average cloud cover in September
Manteca, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Manteca, 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).
Manteca, California, USA
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