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
A shift in the average high-temperature occurs in September, reducing from a tropical 86.2°F (30.1°C) in August to a moderately hot 75.6°F (24.2°C). Flint's nighttime temperature during September is consistently averaged at a fresh 54.3°F (12.4°C).Humidity
In Flint, the average relative humidity in September is 47%.Rainfall
In Flint, in September, during 4.9 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, there are 98.5 rainfall days, and 6.97" (177mm) of precipitation is accumulated.Snowfall
Months with snowfall in Flint are January through March, September, November and December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, in Flint, Washington, there are 17.1 snowfall days, and 6.69" (170mm) of snow is accumulated.Daylight
In Flint, the average length of the day in September is 12h and 32min.On the first day of September in Flint, sunrise is at 6:22 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:42 pm PDT.
Sunshine
The average sunshine in September in Flint is 11.1h.UV index
In September, the average daily maximum UV index in Flint 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 the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Flint in September?
What is the average humidity in September in Flint?
How many days does it rain in September in Flint?
When does it start to snow in Flint?
What is the average length of the day in September in Flint?
When is the sunrise / sunset in September in Flint?
How many hours of sunshine does Flint have in September?
What is the UV index intensity in September in Flint?
Average temperature in September
Flint, WA
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Flint, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in September
Flint, WA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in September
Flint, WA
- Average humidity in September: 47%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (38%).
Average rainfall in September
Flint, WA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is January (1.02").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Flint, WA
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in September
Flint, WA
- Average snowfall in September: 0.16"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in September
Flint, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Flint, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 11h and 1min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in September
Flint, WA
- Average sunshine days in September: 22.4 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in September
Flint, 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 January, February, November and December (UV index 2).
Average cloud cover in September
Flint, WA
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Flint, 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).
Flint, Washington, USA
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