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 comes with a decrease in the average high-temperature, falling from a tropical 86.2°F (30.1°C) in August to a moderately hot 75.4°F (24.1°C). An average low-temperature of 54.3°F (12.4°C) is anticipated throughout the nights in Granger during September.Humidity
In Granger, the average relative humidity in September is 46%.Rainfall
In Granger, in September, during 4.8 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. In Granger, during the entire year, the rain falls for 78 days and collects up to 3.39" (86mm) of precipitation.Snowfall
Months with snowfall 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 0.04" (1mm) of snow. Throughout the year, in Granger, there are 14.9 snowfall days, and 3.11" (79mm) of snow is accumulated.Daylight
In Granger, the average length of the day in September is 12h and 32min.On the first day of September in Granger, Washington, sunrise is at 6:22 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:41 pm PDT.
Sunshine
In Granger, the average sunshine in September is 11h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Boost your sun resistance with garments that are densely woven yet spacious. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Granger?
What is the average humidity in September in Granger?
How many days does it rain in September in Granger?
When does it start to snow in Granger?
What is the average length of the day in September in Granger?
When are sunrise and sunset in September in Granger?
How long on average sun shines in September in Granger?
What is the UV index reading in September in Granger?
Average temperature in September
Granger, WA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (36.5°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 (25.5°F).
Average pressure in September
Granger, 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
Granger, WA
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is December (4.8mph).
Average humidity in September
Granger, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (38%).
Average rainfall in September
Granger, WA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is May (0.63").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Granger, WA
- Average rainfall days in September: 4.8 days
The month with the highest number of rainy days is March (9.9 days).
The months with the least rainy days are July and August (2.8 days).
Average snowfall in September
Granger, WA
- Average snowfall in September: 0.04"
The months with the highest snowfall are January, February and December (0.94").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in September
Granger, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (4.7 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
Granger, 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: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Granger, WA
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in September
Granger, 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
Granger, WA
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Granger, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Granger, Washington, USA
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