September weather forecastMehama, OR
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Mehama, Oregon, with an average temperature fluctuating between 70.7°F (21.5°C) and 46.2°F (7.9°C).Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a moderately hot 77.7°F (25.4°C) to an agreeable 70.7°F (21.5°C). A striking departure from daytime highs to an average low-temperature of 46.2°F (7.9°C) is witnessed during September.Humidity
In Mehama, the average relative humidity in September is 72%.Rainfall
In Mehama, in September, it is raining for 10.8 days, with typically 1.77" (45mm) of accumulated precipitation. In Mehama, during the entire year, the rain falls for 178.8 days and collects up to 45.31" (1151mm) of precipitation.Snowfall
In Mehama, snow does not fall in May through October.Daylight
In Mehama, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:52 pm PDT.
Sunshine
In September, the average sunshine is 9h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mehama, OR
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in September: 46.2°F
The month with the highest average low temperature is August (48.4°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).
Average pressure in September
Mehama, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in September
Mehama, OR
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is January (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Mehama, OR
- Average humidity in September: 72%
The month with the highest relative humidity is March (87%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Mehama, OR
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is December (6.65").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Mehama, OR
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is March (21.2 days).
The month with the least rainy days is July (5.4 days).
Average snowfall in September
Mehama, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Mehama, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.3 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
Mehama, OR
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in September
Mehama, OR
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in September
Mehama, OR
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Mehama, OR
- Average cloud cover in September: 35
The months with the most cloud cover are February and March (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Mehama, OR
- Average visibility in September: 5mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are February and April (4mi).
