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
Onset of September in Redmond witnesses a reduction in the average high-temperature, falling from a moderately hot 81°F (27.2°C) in August to an agreeable 72°F (22.2°C). A marked drop from daytime peak temperatures to an average low-temperature of 47.1°F (8.4°C) is observed during the nights in September in Redmond.Humidity
In September, the average relative humidity in Redmond is 54%.Rainfall
In September, in Redmond, the rain falls for 5.9 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. In Redmond, during the entire year, the rain falls for 125.1 days and collects up to 12.48" (317mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 51.4 snowfall days, and 24.53" (623mm) of snow is accumulated.Daylight
In September, the average length of the day in Redmond is 12h and 29min.On the first day of September in Redmond, sunrise is at 6:28 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:46 pm PDT.
Sunshine
The average sunshine in September in Redmond is 10.9h.UV index
In Redmond, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The UV index of 3 in September translates into these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Enhance your sun protection with tightly woven, yet airy clothing. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What is the temperature in September in Redmond?
What is the average humidity in September in Redmond?
How many days does it rain in September in Redmond?
When does it start snowing in Redmond?
How many hours of daylight does Redmond have in September?
When is the sunrise / sunset in September in Redmond?
How long on average sun shines in September in Redmond?
What is the UV index reading in September in Redmond?
Average temperature in September
Redmond, OR
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Redmond, OR
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Redmond, OR
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in September
Redmond, OR
- Average humidity in September: 54%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (47%).
Average rainfall in September
Redmond, OR
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is December (1.73").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Redmond, OR
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Redmond, OR
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Redmond, OR
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (12.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Redmond, OR
- Average daylight in September: 12h and 3min
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: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in September
Redmond, OR
- Average sunshine days in September: 21.7 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (10.2 days).
Average UV index in September
Redmond, OR
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Redmond, OR
- Average cloud cover in September: 16
The month with the most cloud cover is December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Redmond, OR
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Redmond, Oregon, USA
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