September weather forecastDrain, OR
September
Weather in September
The first month of the autumn, September, is still a warm month in Drain, Oregon, with temperature in the range of an average high of 73.6°F (23.1°C) and an average low of 46°F (7.8°C).Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's 80.1°F (26.7°C) to a still warm 73.6°F (23.1°C). September nights present a stark temperature decrease to a frosty 46°F (7.8°C).Humidity
The average relative humidity in September is 74%.Rainfall
In Drain, during September, the rain falls for 8.1 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Drain, Oregon, during the entire year, the rain falls for 157.8 days and collects up to 30.63" (778mm) of precipitation.Snowfall
In Drain, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:37 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:55 pm PDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In September, the average daily maximum UV index in Drain is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. When the Sun is at its strongest around midday, find shade and limit exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Drain, OR
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is August (80.1°F).
The month with the lowest average high temperature is December (45.9°F).
- Average low temperature in September: 46°F
The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).
Average pressure in September
Drain, 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
Drain, OR
- Average wind speed in September: 3.5mph
The windiest month (with the highest average wind speed) is January (4.5mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in September
Drain, OR
- Average humidity in September: 74%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Drain, OR
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is December (4.61").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Drain, OR
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (3.6 days).
Average snowfall in September
Drain, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Drain, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Drain, OR
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 4h and 12min).
Average sunshine days in September
Drain, OR
- Average sunshine days in September: 20 days
The month with the most sunshine days is July (25.8 days).
The months with the least sunshine days are February and March (9.3 days).
Average UV index in September
Drain, OR
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Drain, OR
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Drain, OR
- Average visibility in September: 5mi
The months with the highest visibility are July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (4mi).
