September weather forecastJolon, CA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Jolon, California, with an average temperature ranging between min 59.9°F (15.5°C) and max 82.6°F (28.1°C).Temperature
As September takes its course, Jolon's average high-temperature registers at a still warm 82.6°F (28.1°C), closely aligning with the preceding month. Jolon experiences a substantial divergence from daytime highs in September, with average lows hovering around a refreshing 59.9°F (15.5°C).Heat index
The average heat index in September is appraised at 84.2°F (29°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
September is the least humid month, with an average relative humidity of 51%.Rainfall
In Jolon, during September, the rain falls for 1.4 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Jolon, during the entire year, the rain falls for 52.2 days and collects up to 7.13" (181mm) of precipitation.Daylight
In Jolon, California, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:49 pm PDT.
Sunshine
In September, the average sunshine is 11.4h.UV index
In September, the average daily maximum UV index in Jolon is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jolon, CA
- Average high temperature in September: 82.6°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (59°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is February (43.9°F).
Average pressure in September
Jolon, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.91"Hg).
Average wind speed in September
Jolon, CA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is May (6.5mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).
Average humidity in September
Jolon, CA
- Average humidity in September: 51%
The months with the highest relative humidity are February and March (68%).
The month with the lowest relative humidity is September (51%).
Average rainfall in September
Jolon, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is January (1.42").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in September
Jolon, CA
- Average rainfall days in September: 1.4 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.6 days).
Average daylight in September /
Average sunshine in September
Jolon, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 18min).
Average sunshine days in September
Jolon, CA
- Average sunshine days in September: 28.3 days
The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is February (19.9 days).
Average UV index in September
Jolon, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
Jolon, CA
- Average cloud cover in September: 6
The months with the most cloud cover are February and March (Cloud cover 29).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Jolon, 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).
