September weather forecastFerndale, WA
September
Weather in September
September, the first month of the autumn in Ferndale, is also an enjoyable month, with an average temperature varying between 50.9°F (10.5°C) and 65.3°F (18.5°C).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's agreeable 71.1°F (21.7°C) to an enjoyable 65.3°F (18.5°C). The month of September records an average low-temperature of 50.9°F (10.5°C).Humidity
The average relative humidity in September in Ferndale, Washington, is 79%.Rainfall
In September, in Ferndale, the rain falls for 13.4 days. Throughout September, 2.52" (64mm) of precipitation is accumulated. Throughout the year, in Ferndale, there are 178.6 rainfall days, and 37.32" (948mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Ferndale, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:51 pm. On the last day of September, in Ferndale, sunrise is at 7:09 am and sunset at 6:50 pm PDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In Ferndale, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ferndale, WA
- Average high temperature in September: 65.3°F
The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is February (35.2°F).
Average pressure in September
Ferndale, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Ferndale, WA
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Ferndale, WA
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is July (74%).
Average rainfall in September
Ferndale, WA
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is November (5.71").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in September
Ferndale, WA
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is November (20.1 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in September
Ferndale, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Ferndale, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ferndale, WA
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 9h and 18min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in September
Ferndale, WA
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in September
Ferndale, WA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Ferndale, WA
- Average cloud cover in September: 33
The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Ferndale, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
