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
With the onset of September, Coleville's average high-temperature slightly adjusts, moderately receding from August's warm 78.8°F (26°C) to an agreeable 71.6°F (22°C). In Coleville, the September nights descend to a significantly cooler average of 45.5°F (7.5°C) compared to daytime highs.Humidity
In Coleville, California, the average relative humidity in September is 39%.Rainfall
The month with the least rainfall is September, when the rain falls for 4.2 days and typically collects 0.24" (6mm) of precipitation.Snowfall
In Coleville, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:41 pm PDT.
Sunshine
In Coleville, the average sunshine in September is 11.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Take necessary precautions - Defending against sun damage is advocated. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September in Coleville?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September in Coleville?
Average temperature in September
Coleville, CA
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in September: 45.5°F
The month with the highest average low temperature is July (51.1°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).
Average pressure in September
Coleville, CA
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Coleville, CA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest months (with the lowest average wind speed) are January, August and October (5.2mph).
Average humidity in September
Coleville, CA
- Average humidity in September: 39%
The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is August (34%).
Average rainfall in September
Coleville, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in September
Coleville, CA
- Average rainfall days in September: 4.2 days
The month with the highest number of rainy days is March (10.8 days).
The months with the least rainy days are August and September (4.2 days).
Average snowfall in September
Coleville, CA
- Average snowfall in September: 0"
The month with the highest snowfall is March (9.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Coleville, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (9.6 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Coleville, 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 30min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Coleville, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is October (25.5 days).
The month with the least sunshine days is March (14.9 days).
Average UV index in September
Coleville, CA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Coleville, CA
- Average cloud cover in September: 8
The months with the most cloud cover are March and December (Cloud cover 31).
The months with the least cloud cover are July, August and September (Cloud cover 8).
Average visibility in September
Coleville, 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).
Coleville, California, USA
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