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
With the onset of September, the average high-temperature subtly recedes from August's warm 79.2°F (26.2°C) to an agreeable 71.2°F (21.8°C). Ridgefield, in the heat of September, registers a significant plunge to a mean of 48.6°F (9.2°C) during the nights.Humidity
In September, the average relative humidity in Ridgefield is 74%.Rainfall
In Ridgefield, in September, it is raining for 10.8 days, with typically 1.85" (47mm) of accumulated precipitation. In Ridgefield, during the entire year, the rain falls for 180.9 days and collects up to 39.41" (1001mm) of precipitation.Snowfall
In Ridgefield, Washington, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:48 pm. On the last day of September, in Ridgefield, sunrise is at 7:09 am and sunset at 6:52 pm PDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Ridgefield, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are the temperatures in Ridgefield in September?
What is the average humidity in September in Ridgefield?
How much does it rain in Ridgefield in September?
When it does not snow in Ridgefield?
What is the average length of the day in September in Ridgefield?
When are sunrise and sunset in September in Ridgefield?
How many hours of sunshine does Ridgefield have in September?
How high is the UV index in September in Ridgefield?
Average temperature in September
Ridgefield, WA
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in September
Ridgefield, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Ridgefield, WA
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is January (5.4mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in September
Ridgefield, WA
- Average humidity in September: 74%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in September
Ridgefield, WA
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is December (5.71").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in September
Ridgefield, WA
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is March (21.3 days).
The month with the least rainy days is July (5.3 days).
Average snowfall in September
Ridgefield, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Ridgefield, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 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
Ridgefield, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Ridgefield, WA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is July (23.5 days).
The months with the least sunshine days are February and March (8.3 days).
Average UV index in September
Ridgefield, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Ridgefield, WA
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Ridgefield, WA
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
Ridgefield, Washington, USA
Weather forecast for your location
2. Allow the app to use your location
