September weather forecastFort Rock, OR
September
Weather in September
September, the first month of the autumn in Fort Rock, is still a pleasant month, with an average temperature fluctuating between 69.8°F (21°C) and 45.9°F (7.7°C).Temperature
Fort Rock's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's warm 78.4°F (25.8°C) to an agreeable 69.8°F (21°C). Fort Rock's nighttime temperatures in September reflect a stark contrast to the day's highs, falling to an average low of 45.9°F (7.7°C).Humidity
The average relative humidity in September in Fort Rock is 53%.Rainfall
In Fort Rock, during September, the rain falls for 5.4 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Fort Rock, during the entire year, the rain falls for 91.4 days and collects up to 15.67" (398mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.7 snowfall days, it receives 0.75" (19mm) of snow. In Fort Rock, during the entire year, snow falls for 95 days and aggregates up to 73.15" (1858mm) of snow.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:29 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:46 pm PDT.
Sunshine
The average sunshine in September in Fort Rock is 11h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 3 suggests these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fort Rock, OR
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (34.5°F).
- Average low temperature in September: 45.9°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (23.7°F).
Average pressure in September
Fort Rock, OR
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Fort Rock, OR
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Fort Rock, OR
- Average humidity in September: 53%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is July (45%).
Average rainfall in September
Fort Rock, OR
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is February (2.13").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Fort Rock, OR
- Average rainfall days in September: 5.4 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Fort Rock, OR
- Average snowfall in September: 0.75"
The month with the highest snowfall is February (16.06").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Fort Rock, OR
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is December (16.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Fort Rock, OR
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in September
Fort Rock, OR
- Average sunshine days in September: 22 days
The month with the most sunshine days is July (25.1 days).
The month with the least sunshine days is March (11.1 days).
Average UV index in September
Fort Rock, 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
Fort Rock, OR
- Average cloud cover in September: 17
The months with the most cloud cover are February and December (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in September
Fort Rock, OR
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
