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
September's arrival corresponds with a decrease in average high-temperatures, from August's warm 81.5°F (27.5°C) to an agreeable 71.8°F (22.1°C). Pilot Rock, during September nights, observes an average temperature of 52.3°F (11.3°C).Humidity
The average relative humidity in September is 48%.Rainfall
In Pilot Rock, in September, it is raining for 6.7 days, with typically 0.55" (14mm) of accumulated precipitation. Throughout the year, there are 145.3 rainfall days, and 16.69" (424mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. In Pilot Rock, Oregon, during the entire year, snow falls for 30.7 days and aggregates up to 15.51" (394mm) of snow.Daylight
In Pilot Rock, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:17 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:36 pm PDT.
Sunshine
The average sunshine in September is 10.5h.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 unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Be vigilant - Preventing sunburn is recommended. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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 many days does it rain in September?
When does it start to snow?
How many hours of daylight does Pilot Rock have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Pilot Rock have in September?
How high is the UV index in September?
Average temperature in September
Pilot Rock, OR
- Average high temperature in September: 71.8°F
The warmest months (with the highest average high temperature) are July and August (81.5°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Pilot Rock, OR
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in September
Pilot Rock, OR
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in September
Pilot Rock, OR
- Average humidity in September: 48%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (41%).
Average rainfall in September
Pilot Rock, OR
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Pilot Rock, OR
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in September
Pilot Rock, OR
- Average snowfall in September: 0.12"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Pilot Rock, OR
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (8.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Pilot Rock, 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: 10h and 3min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Pilot Rock, OR
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in September
Pilot Rock, 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
Pilot Rock, OR
- Average cloud cover in September: 18
The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Pilot Rock, OR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Pilot Rock, Oregon, USA
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