September weather forecastShaniko, OR
September
Weather in September
September, the first month of the autumn in Shaniko, is still a pleasant month, with an average temperature fluctuating between 72.5°F (22.5°C) and 48.6°F (9.2°C).Temperature
The onset of September introduces a moderate change in Shaniko's weather, with average high-temperatures falling from August's warm 81.7°F (27.6°C) to an agreeable 72.5°F (22.5°C). Significant dips from daytime highs mark the September nights, with a consistent average temperature of 48.6°F (9.2°C).Humidity
In Shaniko, the average relative humidity in September is 55%.Rainfall
In Shaniko, during September, the rain falls for 6.3 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Shaniko, during the entire year, the rain falls for 121.1 days and collects up to 11.38" (289mm) of precipitation.Snowfall
Months with snowfall are January through May, September, November and December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Shaniko, during the entire year, snow falls for 35.3 days and aggregates up to 17.6" (447mm) of snow.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:44 pm PDT.
Sunshine
The average sunshine in September is 10.9h.UV index
In Shaniko, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 4 during September leads to these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Enhance your sun protection with tightly woven, yet airy clothing. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shaniko, OR
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (37.9°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (26.2°F).
Average pressure in September
Shaniko, 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 (29.96"Hg).
Average wind speed in September
Shaniko, OR
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Shaniko, OR
- Average humidity in September: 55%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (48%).
Average rainfall in September
Shaniko, OR
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is December (1.69").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Shaniko, OR
- Average rainfall days in September: 6.3 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is July (3 days).
Average snowfall in September
Shaniko, OR
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and October (0").
Average snowfall days in September
Shaniko, OR
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (9.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Shaniko, OR
- Average daylight in September: 12h and 30min
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 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Shaniko, OR
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is July (26 days).
The month with the least sunshine days is February (10.9 days).
Average UV index in September
Shaniko, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Shaniko, OR
- Average cloud cover in September: 18
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Shaniko, 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).
