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
Entering September, Forest Falls's average high-temperature reads a warm 28.8°C (83.8°F), indicating a close resemblance to the previous month's climate. Forest Falls experiences a mean low-temperature of 16.9°C (62.4°F) during September.Humidity
In September, the average relative humidity is 34%.Rainfall
In Forest Falls, during September, the rain falls for 2.5 days and regularly aggregates up to 4mm (0.16") of precipitation. Throughout the year, there are 34.1 rainfall days, and 114mm (4.49") of precipitation is accumulated.Snowfall
In Forest Falls, snow does not fall in June through October.Daylight
In Forest Falls, 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, in Forest Falls, sunrise is at 6:42 am and sunset at 6:32 pm PDT.
Sunshine
In September, the average sunshine is 10.6h.UV index
In Forest Falls, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 6 in September translates into these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
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 reading in September?
Average temperature in September
Forest Falls, CA
- Average high temperature in September: 28.8°C
The warmest month (with the highest average high temperature) is July (31.8°C).
The month with the lowest average high temperature is December (11.5°C).
- Average low temperature in September: 16.9°C
The month with the highest average low temperature is August (19.5°C).
The coldest month (with the lowest average low temperature) is December (3°C).
Average pressure in September
Forest Falls, CA
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is January (1019.3mbar).
The month with the lowest atmospheric pressure is June (1009.8mbar).
Average wind speed in September
Forest Falls, CA
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is April (12.6km/h).
The calmest month (with the lowest average wind speed) is September (8.8km/h).
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: 4mm
The wettest months (with the highest rainfall) are February and December (16mm).
The driest month (with the least rainfall) is June (2mm).
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: 0mm
The month with the highest snowfall is April (97mm).
The months with the least snowfall are June, July, August, September and October (0mm).
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 2min
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 4min
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: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Forest Falls, California, USA
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