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 sea temperature 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
Crescent City's September showcases an average high-temperature of a comfortable 66.7°F (19.3°C), hardly distinct from August's 68°F (20°C). In Crescent City, the average temperature during the nights of September drops to a cool 53.4°F (11.9°C).Humidity
September is the least humid month in Crescent City, with an average relative humidity of 76%.Rainfall
In Crescent City, during September, the rain falls for 5.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, in Crescent City, there are 131.4 rainfall days, and 45.67" (1160mm) of precipitation is accumulated.Snowfall
February and September are months with snowfall. September is the first month it typically snows in Crescent City, California. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Crescent City, there are 0.4 snowfall days, and 0.47" (12mm) of snow is accumulated.Ocean temperature
In September, the average ocean temperature in Crescent City is 52.3°F (11.3°C).Note: Swimming in 52.3°F (11.3°C) can be lethal. Merely spending a few minutes in 55.4°F (13°C) waters feels harsh, and venturing below 50°F (10°C) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
The average length of the day in September in Crescent City is 12h and 28min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:49 pm. On the last day of September, in Crescent City, California, sunrise is at 7:13 am and sunset at 6:59 pm PDT.
Sunshine
The average sunshine in September is 10.2h.UV index
In Crescent City, California, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Boost your sun resistance with garments that are densely woven yet spacious. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Crescent City in September?
What is the least humid month in Crescent City?
What is the average humidity in September in Crescent City?
How many days does it rain in September in Crescent City?
When does it start snowing in Crescent City?
What is the ocean temperature in September in Crescent City?
What is the average length of the day in September in Crescent City?
When are sunrise and sunset in September in Crescent City?
How many hours of sunshine does Crescent City have in September?
How high is the UV index in September in Crescent City?
Average temperature in September
Crescent City, CA
- Average high temperature in September: 66.7°F
The warmest month (with the highest average high temperature) is August (68°F).
The month with the lowest average high temperature is December (51.3°F).
- Average low temperature in September: 53.4°F
The months with the highest average low temperature are July and August (54.1°F).
The coldest month (with the lowest average low temperature) is February (43.2°F).
Average pressure in September
Crescent City, CA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in September
Crescent City, CA
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is June (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in September
Crescent City, CA
- Average humidity in September: 76%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is September (76%).
Average rainfall in September
Crescent City, CA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is December (8.15").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Crescent City, CA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is July (2.4 days).
Average snowfall in September
Crescent City, CA
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are January, March, April, May, June, July, August, October, November and December (0").
Average snowfall days in September
Crescent City, CA
- Average snowfall days in September: 0.1 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, October and November (0 days).
Average sea temperature in September
Crescent City, CA
- Average sea temperature in September: 52.3°F
The best month for swimming (with the highest average sea temperature) is October (52.6°F).
The coldest month (with the lowest average sea temperature) is April (50.7°F).
Average daylight in September /
Average sunshine in September
Crescent City, CA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 1min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Crescent City, CA
- Average sunshine days in September: 24 days
The month with the most sunshine days is July (27.8 days).
The month with the least sunshine days is March (10.8 days).
Average UV index in September
Crescent City, CA
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in September
Crescent City, CA
- Average cloud cover in September: 17
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in September
Crescent City, 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).
Crescent City, California, USA
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