September weather forecastKilldeer, ND
September
Weather in September
September, the first month of the autumn in Killdeer, is also an agreeable month, with an average temperature fluctuating between 52.2°F (11.2°C) and 71.2°F (21.8°C).Temperature
With the onset of September, Killdeer experiences a modest temperature adjustment, with the average high-temperature receding from a moderately hot 81.9°F (27.7°C) in August to an agreeable 71.2°F (21.8°C). Killdeer's average low-temperature during September nights is observed to be a cool 52.2°F (11.2°C).Humidity
In September, the average relative humidity is 51%.Rainfall
In Killdeer, during September, the rain falls for 8.1 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 91.6 rainfall days, and 12.64" (321mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Killdeer, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:30 pm. On the last day of September, in Killdeer, North Dakota, sunrise is at 6:49 am and sunset at 6:31 pm MDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Killdeer, ND
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (21.4°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Killdeer, ND
- Average pressure in September: 29.93"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
Killdeer, ND
- Average wind speed in September: 10mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in September
Killdeer, ND
- Average humidity in September: 51%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Killdeer, ND
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in September
Killdeer, ND
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is June (12.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Killdeer, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Killdeer, ND
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Killdeer, ND
- Average daylight in September: 12h and 30min
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 42min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in September
Killdeer, ND
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is September (20.5 days).
The month with the least sunshine days is April (14.9 days).
Average UV index in September
Killdeer, ND
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Killdeer, ND
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in September
Killdeer, ND
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
