September weather forecastGlendale, OR
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Glendale, Oregon, with an average temperature fluctuating between 45.3°F (7.4°C) and 76.8°F (24.9°C).Temperature
In Glendale, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 83.7°F (28.7°C) to a still moderately hot 76.8°F (24.9°C). During September, Glendale perceives a consistent contrast from the daytime highs, with an average low-temperature of 45.3°F (7.4°C).Humidity
In Glendale, the average relative humidity in September is 69%.Rainfall
In Glendale, Oregon, in September, during 4.5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. In Glendale, during the entire year, the rain falls for 100 days and collects up to 13.27" (337mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Glendale, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:39 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:56 pm PDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Glendale, OR
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (45°F).
- Average low temperature in September: 45.3°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (31.3°F).
Average pressure in September
Glendale, OR
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in September
Glendale, OR
- Average wind speed in September: 3.2mph
The windiest month (with the highest average wind speed) is January (4.1mph).
The calmest month (with the lowest average wind speed) is September (3.2mph).
Average humidity in September
Glendale, OR
- Average humidity in September: 69%
The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Glendale, OR
- Average rainfall in September: 0.35"
The wettest months (with the highest rainfall) are January and December (2.2").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Glendale, OR
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is August (2.1 days).
Average snowfall in September
Glendale, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Glendale, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Glendale, OR
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 18min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in September
Glendale, OR
- Average sunshine days in September: 24.9 days
The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is March (13.8 days).
Average UV index in September
Glendale, 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
Glendale, OR
- Average cloud cover in September: 25
The month with the most cloud cover is March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Glendale, OR
- Average visibility in September: 5mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
