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 modest decline in the average high-temperature is seen during September, decreasing from a warm 83.7°F (28.7°C) in August to a still moderately hot 76.8°F (24.9°C). Glendale's September nights cool down significantly from the day's heat, to an average low-temperature of 45.3°F (7.4°C).Humidity
The average relative humidity in September in Glendale is 69%.Rainfall
In Glendale, during September, the rain falls for 4.5 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, there are 100 rainfall days, and 13.27" (337mm) of precipitation is accumulated.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 the month, sunrise is at 6:39 am and sunset at 7:47 pm. On the last day of September, 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 in Glendale is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 4 during September leads to these advisories:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What is the temperature in September in Glendale?
What is the average humidity in September in Glendale?
How many days does it rain in September in Glendale?
When it does not snow in Glendale?
How many hours of daylight does Glendale have in September?
When is the sunrise / sunset in September in Glendale?
How many hours of sunshine does Glendale have in September?
What is the UV index reading in September in Glendale?
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 3min
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 2min
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).
Glendale, Oregon, USA
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