September weather forecastMandaree, ND
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Mandaree, North Dakota, with an average temperature varying between 70.7°F (21.5°C) and 51.1°F (10.6°C).Temperature
The onset of September results in a decrease in the average high-temperature, receding from a warm 81.1°F (27.3°C) in August to a pleasant 70.7°F (21.5°C). During September, Mandaree observes a consistent average nighttime temperature of 51.1°F (10.6°C).Humidity
In Mandaree, the average relative humidity in September is 54%.Rainfall
In Mandaree, in September, it is raining for 6.9 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 69.9 rainfall days, and 6.77" (172mm) of precipitation is accumulated.Snowfall
In Mandaree, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:31 pm MDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In Mandaree, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 in September translates into these instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mandaree, ND
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (5.7°F).
Average pressure in September
Mandaree, ND
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Mandaree, ND
- Average wind speed in September: 9.8mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
Mandaree, ND
- Average humidity in September: 54%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Mandaree, ND
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is June (1.18").
The driest months (with the least rainfall) are January and February (0.2").
Average rainfall days in September
Mandaree, ND
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is June (11.3 days).
The month with the least rainy days is February (1.6 days).
Average snowfall in September
Mandaree, ND
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mandaree, ND
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mandaree, ND
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in September
Mandaree, ND
- Average sunshine days in September: 21.1 days
The month with the most sunshine days is November (22.7 days).
The month with the least sunshine days is June (15.7 days).
Average UV index in September
Mandaree, 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, March, October, November and December (UV index 2).
Average cloud cover in September
Mandaree, ND
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in September
Mandaree, ND
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
