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
Transitioning from August to September, Deadwood observes an average high-temperature of a refreshing 66.2°F (19°C), differing subtly from the previous month. September in Deadwood is noted for a mean low-temperature of 52.3°F (11.3°C).Humidity
April through July, September and October, with an average relative humidity of 81%, are the least humid months.Rainfall
In Deadwood, in September, it is raining for 6.8 days, with typically 0.79" (20mm) of accumulated precipitation. In Deadwood, Oregon, during the entire year, the rain falls for 131.8 days and collects up to 20.63" (524mm) of precipitation.Snowfall
In Deadwood, Oregon, snow does not fall in March through October and December.Daylight
In September, the average length of the day in Deadwood is 12h and 29min.On the first day of September in Deadwood, sunrise is at 6:39 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:56 pm PDT.
Sunshine
In Deadwood, the average sunshine in September is 9.3h.UV index
In Deadwood, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Heed the precautions - It is counselled to guard against solar damage. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What is the usual temperature for Deadwood in September?
What is the least humid month in Deadwood?
What is the average humidity in September in Deadwood?
How much does it rain in Deadwood in September?
When it does not snow in Deadwood?
What is the average length of the day in September in Deadwood?
What time are sunrise and sunset in September in Deadwood?
How long on average sun shines in September in Deadwood?
What is the UV index intensity in September in Deadwood?
Average temperature in September
Deadwood, 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
Deadwood, 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
Deadwood, 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
Deadwood, 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
Deadwood, 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
Deadwood, 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
Deadwood, 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
Deadwood, 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
Deadwood, OR
- Average daylight in September: 12h and 3min
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 2min
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
Deadwood, 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
Deadwood, 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
Deadwood, 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
Deadwood, 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).
Deadwood, Oregon, USA
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