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
Setting in of September comes with a decrease in the average high-temperature, moving from a warm 81.9°F (27.7°C) in August to an agreeable 71.2°F (21.8°C). An average low-temperature of 52.2°F (11.2°C) is common during the nights of September.Humidity
In Keene, the average relative humidity in September is 51%.Rainfall
In September, the rain falls for 8.1 days. Throughout September, 1.61" (41mm) of precipitation is accumulated. 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
The average length of the day in September in Keene is 12h and 33min.On the first day of September, sunrise is at 6:11 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:32 pm MDT.
Sunshine
In Keene, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Take precautions - Protection against sun damage is advised. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Keene have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Keene have in September?
What is the UV index reading in September?
Average temperature in September
Keene, 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
Keene, 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
Keene, 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
Keene, 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
Keene, 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
Keene, 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
Keene, 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
Keene, 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
Keene, ND
- Average daylight in September: 12h and 4min
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 30min).
- Average sunshine in September: 8h and 4min
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
Keene, 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
Keene, 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
Keene, 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
Keene, 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).
Keene, North Dakota, USA
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