September weather forecastPenn, ND
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Penn, North Dakota, with an average temperature varying between 50.2°F (10.1°C) and 69.1°F (20.6°C).Temperature
A decrease in the average high-temperature is observed during September, shifting from a moderately hot 79.5°F (26.4°C) in August to a pleasant 69.1°F (20.6°C). Nighttime temperatures in September average to a fresh 50.2°F (10.1°C).Humidity
In September, the average relative humidity is 61%.Rainfall
In Penn, in September, during 8.9 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. In Penn, during the entire year, the rain falls for 95.3 days and collects up to 14.41" (366mm) of precipitation.Snowfall
June through September are months without snowfall in Penn.Daylight
In Penn, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:55 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:16 pm CDT.
Sunshine
The average sunshine in September in Penn is 8.7h.UV index
In September, the average daily maximum UV index in Penn is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Penn, ND
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is January (15.3°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (1°F).
Average pressure in September
Penn, ND
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is February (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Penn, ND
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is October (11.1mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Penn, ND
- Average humidity in September: 61%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Penn, ND
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is July (2.44").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in September
Penn, ND
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is December (2.1 days).
Average snowfall in September
Penn, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Penn, ND
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Penn, ND
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Penn, ND
- Average sunshine days in September: 19.8 days
The months with the most sunshine days are August and September (19.8 days).
The month with the least sunshine days is June (11 days).
Average UV index in September
Penn, ND
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Penn, ND
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Penn, ND
- 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, February, March and December (5mi).
