September weather forecastForest Falls, CA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Forest Falls, California, with an average temperature varying between 62.4°F (16.9°C) and 83.8°F (28.8°C).Temperature
September brings a marginal elevation to a warm 83.8°F (28.8°C) from August's 88.9°F (31.6°C) in Forest Falls's average high-temperatures. The average nighttime temperature lowers to a refreshing 62.4°F (16.9°C) throughout September.Humidity
In September, the average relative humidity is 34%.Rainfall
In September, the rain falls for 2.5 days. Throughout September, 0.16" (4mm) of precipitation is accumulated. Throughout the year, there are 34.1 rainfall days, and 4.49" (114mm) of precipitation is accumulated.Snowfall
In Forest Falls, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:32 pm PDT.
Sunshine
The average sunshine in September is 10.6h.UV index
In Forest Falls, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. 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
Average temperature in September
Forest Falls, CA
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is August (67.1°F).
The coldest month (with the lowest average low temperature) is December (37.4°F).
Average pressure in September
Forest Falls, CA
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Forest Falls, CA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is September (5.5mph).
Average humidity in September
Forest Falls, CA
- Average humidity in September: 34%
The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is August (30%).
Average rainfall in September
Forest Falls, CA
- Average rainfall in September: 0.16"
The wettest months (with the highest rainfall) are February and December (0.63").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Forest Falls, CA
- Average rainfall days in September: 2.5 days
The month with the highest number of rainy days is July (4.1 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in September
Forest Falls, CA
- Average snowfall in September: 0"
The month with the highest snowfall is April (3.82").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Forest Falls, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Forest Falls, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 36min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Forest Falls, CA
- Average sunshine days in September: 25.9 days
The month with the most sunshine days is October (28.6 days).
The month with the least sunshine days is February (23.7 days).
Average UV index in September
Forest Falls, CA
- Average UV index in September: 6
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
Forest Falls, CA
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 21).
The months with the least cloud cover are June, August and September (Cloud cover 6).
Average visibility in September
Forest Falls, 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).
