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
In September, the average high-temperature marginally drops from a tropical 92.8°F (33.8°C) in August to a still hot 86.9°F (30.5°C). During September, Copperopolis's temperature records a considerable difference from its daily highs to an average low of 59.9°F (15.5°C).Humidity
In Copperopolis, the average relative humidity in September is 35%.Rainfall
In Copperopolis, during September, the rain falls for 2.7 days and regularly aggregates up to 0.2" (5mm) of precipitation. Throughout the year, in Copperopolis, there are 72.8 rainfall days, and 20.91" (531mm) of precipitation is accumulated.Snowfall
January, March through November are months without snowfall.Daylight
In September, the average length of the day in Copperopolis is 12h and 25min.On the first day of September in Copperopolis, California, sunrise is at 6:33 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:46 pm PDT.
Sunshine
In September, the average sunshine in Copperopolis is 11.3h.UV index
In September, the average daily maximum UV index in Copperopolis, California, is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 5 in September translates into this advice:
Ensure safety - Sun damage prevention is strongly urged. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Copperopolis in September?
What is the average humidity in September in Copperopolis?
How much does it rain in Copperopolis in September?
When it does not snow in Copperopolis?
How many hours of daylight does Copperopolis have in September?
When are sunrise and sunset in September in Copperopolis?
How long on average sun shines in September in Copperopolis?
How high is the UV index in September in Copperopolis?
Average temperature in September
Copperopolis, CA
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in September
Copperopolis, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Copperopolis, CA
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in September
Copperopolis, CA
- Average humidity in September: 35%
The month with the highest relative humidity is March (70%).
The month with the lowest relative humidity is July (32%).
Average rainfall in September
Copperopolis, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is March (4.17").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Copperopolis, CA
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is August (1 days).
Average snowfall in September
Copperopolis, CA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.28").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Copperopolis, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Copperopolis, CA
- Average daylight in September: 12h and 2min
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 36min).
- Average sunshine in September: 11h and 2min
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 54min).
Average sunshine days in September
Copperopolis, CA
- Average sunshine days in September: 26.7 days
The month with the most sunshine days is August (29.1 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in September
Copperopolis, 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
Copperopolis, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Copperopolis, 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).
Copperopolis, California, USA
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