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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 85.1°F (29.5°C) in August to a still moderately hot 77.9°F (25.5°C). Despite the hot September days, Big Bend's nights see an average temperature plunge to a frosty 46.8°F (8.2°C).Humidity
In Big Bend, the average relative humidity in September is 48%.Rainfall
In Big Bend, California, during September, the rain falls for 4.6 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Big Bend, during the entire year, the rain falls for 110.4 days and collects up to 28.62" (727mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:50 pm PDT.
Sunshine
In September, the average sunshine is 11h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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?
How many days 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?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Big Bend, CA
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in September: 46.8°F
The month with the highest average low temperature is July (52.3°F).
The coldest month (with the lowest average low temperature) is December (27.5°F).
Average pressure in September
Big Bend, CA
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed in September
Big Bend, CA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Big Bend, CA
- Average humidity in September: 48%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Big Bend, CA
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is March (5.08").
The driest months (with the least rainfall) are July and August (0.28").
Average rainfall days in September
Big Bend, CA
- Average rainfall days in September: 4.6 days
The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in September
Big Bend, CA
- Average snowfall in September: 0"
The month with the highest snowfall is January (13.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Big Bend, CA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is March (7.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Big Bend, CA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 11h and 0min
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 0min).
Average sunshine days in September
Big Bend, CA
- Average sunshine days in September: 23.9 days
The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is March (10.9 days).
Average UV index in September
Big Bend, CA
- Average UV index in September: 4
The months with the highest UV index are June and 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
Big Bend, CA
- Average cloud cover in September: 12
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Big Bend, CA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Big Bend, California, USA
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