September weather forecastSwisshome, OR
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Swisshome, Oregon, with an average temperature fluctuating between 52.3°F (11.3°C) and 66.2°F (19°C).Temperature
With the onset of September, Swisshome's average high-temperature clocks in at a refreshing 66.2°F (19°C), showing a minor fluctuation from the previous month. Swisshome, during the month of September, experiences an average low-temperature of 52.3°F (11.3°C).Humidity
The months with the lowest humidity are April through July, September and October, with an average relative humidity of 81%.Rainfall
In Swisshome, in September, it is raining for 6.8 days, with typically 0.79" (20mm) of accumulated precipitation. In Swisshome, during the entire year, the rain falls for 131.8 days and collects up to 20.63" (524mm) of precipitation.Snowfall
In Swisshome, snow does not fall in March through October and December.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:57 pm PDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Prioritize safety - Recommendations to avert sunburn are shared. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Swisshome, OR
- Average high temperature in September: 66.2°F
The warmest month (with the highest average high temperature) is August (68.2°F).
The month with the lowest average high temperature is December (48°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is August (52.7°F).
The coldest month (with the lowest average low temperature) is February (40.6°F).
Average pressure in September
Swisshome, OR
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and April (30.09"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in September
Swisshome, OR
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is December (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Swisshome, OR
- Average humidity in September: 81%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April, May, June, July, September and October (81%).
Average rainfall in September
Swisshome, OR
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Swisshome, OR
- Average rainfall days in September: 6.8 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is July (2.9 days).
Average snowfall in September
Swisshome, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Swisshome, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Swisshome, 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: 8h and 54min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Swisshome, OR
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is July (26.9 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Swisshome, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in September
Swisshome, OR
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Swisshome, OR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
