September weather forecastEnterprise, OR
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Enterprise, Oregon, with temperature in the range of an average high of 69.6°F (20.9°C) and an average low of 45.3°F (7.4°C).Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a warm 78.4°F (25.8°C) in August to a pleasant 69.6°F (20.9°C). Throughout September, Enterprise acknowledges a distinct difference between its daytime highs and the steady low average of 45.3°F (7.4°C).Humidity
In Enterprise, the average relative humidity in September is 53%.Rainfall
In Enterprise, during September, the rain falls for 8.5 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Enterprise, Oregon, during the entire year, the rain falls for 136 days and collects up to 24.45" (621mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, there are 89.9 snowfall days, and 68.82" (1748mm) of snow is accumulated.Daylight
In Enterprise, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:30 pm PDT.
Sunshine
In Enterprise, Oregon, the average sunshine in September is 10.4h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Enterprise, OR
- Average high temperature in September: 69.6°F
The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in September: 45.3°F
The month with the highest average low temperature is August (50.9°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).
Average pressure in September
Enterprise, OR
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in September
Enterprise, OR
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Enterprise, OR
- Average humidity in September: 53%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Enterprise, OR
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is July (0.83").
Average rainfall days in September
Enterprise, OR
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is August (5.8 days).
Average snowfall in September
Enterprise, OR
- Average snowfall in September: 0.35"
The month with the highest snowfall is February (15.98").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Enterprise, OR
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (17.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Enterprise, 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 24min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Enterprise, OR
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (8 days).
Average UV index in September
Enterprise, 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 and February (UV index 1).
Average cloud cover in September
Enterprise, OR
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in September
Enterprise, OR
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
