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 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
The arrival of September suggests a slight decrease in the average high-temperature, moving from a fiery hot 99.1°F (37.3°C) in August to a hot 92.3°F (33.5°C). Despite soaring daytime temperatures, Richgrove registers a consistent average low-temperature of 62.2°F (16.8°C) in September.Humidity
In September, the average relative humidity in Richgrove is 33%.Rainfall
In Richgrove, in September, it is raining for 1.7 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, in Richgrove, there are 52 rainfall days, and 6.85" (174mm) of precipitation is accumulated.Snowfall
In Richgrove, snow does not fall in January, March through December.Daylight
In Richgrove, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:23 pm. On the last day of September, in Richgrove, California, sunrise is at 6:51 am and sunset at 6:41 pm PDT.
Sunshine
In Richgrove, the average sunshine in September is 11.1h.UV index
In Richgrove, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 6 suggests these recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Richgrove in September?
What is the average humidity in September in Richgrove?
How much does it rain in Richgrove in September?
When it does not snow in Richgrove?
How many hours of daylight does Richgrove have in September?
When are sunrise and sunset in September in Richgrove?
How many hours of sunshine does Richgrove have in September?
What is the UV index reading in September in Richgrove?
Average temperature in September
Richgrove, CA
- Average high temperature in September: 92.3°F
The warmest month (with the highest average high temperature) is July (99.7°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in September
Richgrove, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Richgrove, CA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is June (5mph).
The calmest months (with the lowest average wind speed) are November and December (3.5mph).
Average humidity in September
Richgrove, CA
- Average humidity in September: 33%
The months with the highest relative humidity are January and December (63%).
The month with the lowest relative humidity is August (30%).
Average rainfall in September
Richgrove, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is March (1.34").
The driest month (with the least rainfall) is August (0.08").
Average rainfall days in September
Richgrove, CA
- Average rainfall days in September: 1.7 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.9 days).
Average snowfall in September
Richgrove, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Richgrove, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Richgrove, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Richgrove, CA
- Average sunshine days in September: 27 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (20.7 days).
Average UV index in September
Richgrove, CA
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in September
Richgrove, CA
- Average cloud cover in September: 5
The months with the most cloud cover are March and December (Cloud cover 25).
The months with the least cloud cover are July and August (Cloud cover 4).
Average visibility in September
Richgrove, 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).
Richgrove, California, USA
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