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 mild shift in the average high-temperature occurs in September, reducing from a warm 76.5°F (24.7°C) in August to an enjoyable 67.8°F (19.9°C). Rhododendron sees an average low-temperature of 46.6°F (8.1°C) during September.Humidity
In September, the average relative humidity is 68%.Rainfall
In Rhododendron, in September, during 8.5 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 111.1 rainfall days, and 36.93" (938mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 1.26" (32mm) of snow. In Rhododendron, during the entire year, snow falls for 102 days and aggregates up to 169.65" (4309mm) of snow.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 6:30 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:49 pm PDT.
Sunshine
In September, the average sunshine is 9.7h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the UV index of 3 transforms into the following advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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 does it start snowing in Rhododendron?
What is the average length of the day in September in Rhododendron?
When is the sunrise / sunset in September?
How many hours of sunshine does Rhododendron have in September?
What is the UV index reading in September?
Average temperature in September
Rhododendron, OR
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (35.4°F).
- Average low temperature in September: 46.6°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).
Average pressure in September
Rhododendron, OR
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in September
Rhododendron, OR
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest months (with the lowest average wind speed) are August and September (4.7mph).
Average humidity in September
Rhododendron, OR
- Average humidity in September: 68%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Rhododendron, OR
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is January (6.5").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Rhododendron, OR
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is October (13.8 days).
The month with the least rainy days is July (4.4 days).
Average snowfall in September
Rhododendron, OR
- Average snowfall in September: 1.26"
The month with the highest snowfall is December (37.2").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Rhododendron, OR
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (18.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Rhododendron, 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 4min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 54min).
Average sunshine days in September
Rhododendron, OR
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is July (26.1 days).
The month with the least sunshine days is February (8.9 days).
Average UV index in September
Rhododendron, 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
Rhododendron, OR
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Rhododendron, OR
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Rhododendron, Oregon, USA
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