September weather forecastMansfield, WA
September
Weather in September
September, the first month of the autumn in Mansfield, is also an agreeable month, with an average temperature varying between 72.5°F (22.5°C) and 52.2°F (11.2°C).Temperature
September's onset brings a slight change in high-temperatures, falling from a moderately hot 84.2°F (29°C) in August to a pleasant 72.5°F (22.5°C). During the month of September, an average temperature of 52.2°F (11.2°C) is noted during the nights in Mansfield, Washington.Humidity
The average relative humidity in September in Mansfield is 46%.Rainfall
In Mansfield, during September, the rain falls for 5.6 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 94.9 rainfall days, and 8.9" (226mm) of precipitation is accumulated.Snowfall
In Mansfield, snow does not fall in April through October.Daylight
In September, the average length of the day in Mansfield, Washington, is 12h and 33min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:38 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:39 pm PDT.
Sunshine
In September, the average sunshine in Mansfield is 10.7h.UV index
In Mansfield, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mansfield, WA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is August (59.7°F).
The coldest months (with the lowest average low temperature) are January and December (20.7°F).
Average pressure in September
Mansfield, WA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in September
Mansfield, WA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in September
Mansfield, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in September
Mansfield, WA
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Mansfield, WA
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is March (12.2 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in September
Mansfield, WA
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.17").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mansfield, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (8.8 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
Mansfield, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 10h and 42min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Mansfield, WA
- Average sunshine days in September: 23.3 days
The month with the most sunshine days is July (26.4 days).
The month with the least sunshine days is February (15.6 days).
Average UV index in September
Mansfield, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Mansfield, WA
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Mansfield, WA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
