September weather forecastBig Creek, CA
September
Weather in September
The first month of the autumn, September, is still a warm month in Big Creek, California, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 73.4°F (23°C).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from 79.5°F (26.4°C) in August to a still warm 73.4°F (23°C). Big Creek documents a significant temperature variance in September, with the mean nighttime lows settling at a frosty 48.6°F (9.2°C).Humidity
In September, the average relative humidity in Big Creek is 37%.Rainfall
In Big Creek, California, during September, the rain falls for 3.4 days and regularly aggregates up to 0.28" (7mm) of precipitation. In Big Creek, during the entire year, the rain falls for 49.9 days and collects up to 22.09" (561mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 53.9 snowfall days, and 134.09" (3406mm) of snow is accumulated.Daylight
The average length of the day in September in Big Creek is 12h and 24min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:25 pm. On the last day of September, in Big Creek, sunrise is at 6:52 am and sunset at 6:41 pm PDT.
Sunshine
In Big Creek, the average sunshine in September is 11.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during September leads to these advisories:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Big Creek, CA
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure in September
Big Creek, 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 (29.88"Hg).
Average wind speed in September
Big Creek, CA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are August and November (4.5mph).
Average humidity in September
Big Creek, CA
- Average humidity in September: 37%
The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is August (34%).
Average rainfall in September
Big Creek, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is August (0.24").
Average rainfall days in September
Big Creek, CA
- Average rainfall days in September: 3.4 days
The month with the highest number of rainy days is May (8.2 days).
The month with the least rainy days is January (2.1 days).
Average snowfall in September
Big Creek, CA
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (28.46").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Big Creek, CA
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Big Creek, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 6min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in September
Big Creek, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is April (18 days).
Average UV index in September
Big Creek, 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, March, November and December (UV index 2).
Average cloud cover in September
Big Creek, CA
- Average cloud cover in September: 6
The month with the most cloud cover is March (Cloud cover 29).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Big Creek, 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).
