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
September's arrival coincides with a drop in the average high-temperature, decreasing from August's moderately hot 76.5°F (24.7°C) to a comfortable 67.5°F (19.7°C). September nights bring a pronounced temperature shift, with averages hovering around a frosty 45.7°F (7.6°C).Humidity
The average relative humidity in September in Fort Rains is 72%.Rainfall
In Fort Rains, during September, the rain falls for 8.4 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, in Fort Rains, there are 158.4 rainfall days, and 30.31" (770mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Fort Rains.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:44 pm. On the last day of September, in Fort Rains, Washington, sunrise is at 7:05 am and sunset at 6:48 pm PDT.
Sunshine
In September, the average sunshine in Fort Rains is 8.7h.UV index
In September, the average daily maximum UV index in Fort Rains is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 3 during September translates into the following guidance:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What is the average September temperature in Fort Rains?
What is the average humidity in September in Fort Rains?
How many days does it rain in September in Fort Rains?
When it does not snow in Fort Rains?
What is the average length of the day in September in Fort Rains?
What time are sunrise and sunset in September in Fort Rains?
How long on average sun shines in September in Fort Rains?
What is the UV index intensity in September in Fort Rains?
Average temperature in September
Fort Rains, WA
- Average high temperature in September: 67.5°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (37.9°F).
- Average low temperature in September: 45.7°F
The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (28.2°F).
Average pressure in September
Fort Rains, WA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in September
Fort Rains, WA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Fort Rains, WA
- Average humidity in September: 72%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are July and August (67%).
Average rainfall in September
Fort Rains, WA
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is January (5.35").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Fort Rains, WA
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is March (18.9 days).
The month with the least rainy days is July (4.4 days).
Average snowfall in September
Fort Rains, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Fort Rains, 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
Fort Rains, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Fort Rains, WA
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is July (24.5 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in September
Fort Rains, WA
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Fort Rains, WA
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in September
Fort Rains, WA
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Fort Rains, Washington, USA
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