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
The shift from August to September includes a small decrease in the average high-temperature, from a warm 79.7°F (26.5°C) to a pleasant 72.5°F (22.5°C). With a notable disparity from daily peak temperatures, the average low-temperature settles at a frosty 49.5°F (9.7°C) throughout September.Humidity
In September, the average relative humidity is 70%.Rainfall
In Fairview, in September, it is raining for 10.1 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, there are 171 rainfall days, and 37.2" (945mm) of precipitation is accumulated.Snowfall
In Fairview, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 6:32 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:51 pm PDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Fairview, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Guard yourself - Avoiding sunburn is suggested. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September in Fairview?
How many hours of sunshine does Fairview have in September?
How high is the UV index in September?
Average temperature in September
Fairview, OR
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (43.3°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is August (52.7°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure in September
Fairview, 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
Fairview, OR
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in September
Fairview, OR
- Average humidity in September: 70%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Fairview, OR
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is December (5.63").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Fairview, OR
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is August (4.1 days).
Average snowfall in September
Fairview, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Fairview, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Fairview, 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 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Fairview, OR
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in September
Fairview, 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
Fairview, OR
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Fairview, 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).
Fairview, Oregon, USA
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