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 modest decline in the average high-temperature is seen during September, decreasing from a moderately hot 80.2°F (26.8°C) in August to an agreeable 72.7°F (22.6°C). In September, the nighttime temperature plummets remarkably from the daily apex to a steady average of 49.6°F (9.8°C).Humidity
In September, the average relative humidity is 71%.Rainfall
In Mount Angel, during September, the rain falls for 10.1 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Mount Angel, during the entire year, the rain falls for 168.8 days and collects up to 30.39" (772mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 6:34 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:52 pm PDT.
Sunshine
The average sunshine in September in Mount Angel, Oregon, is 9.3h.UV index
In Mount Angel, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Mount Angel have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Mount Angel have in September?
What is the UV index reading in September?
Average temperature in September
Mount Angel, OR
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in September
Mount Angel, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in September
Mount Angel, OR
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is January (5.9mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Mount Angel, OR
- Average humidity in September: 71%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Mount Angel, OR
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Mount Angel, OR
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is August (4.3 days).
Average snowfall in September
Mount Angel, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mount Angel, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 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
Mount Angel, OR
- 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: 9h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Mount Angel, OR
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is July (25.5 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in September
Mount Angel, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Mount Angel, OR
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Mount Angel, OR
- Average visibility in September: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
Mount Angel, Oregon, USA
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