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
The shift from August to September corresponds with a decrease in the average high-temperature, down to an agreeable 72.5°F (22.5°C) from a warm 82°F (27.8°C). Nighttime temperature dips to a mean of 53.2°F (11.8°C) during September.Humidity
The average relative humidity in September is 50%.Rainfall
In Bowman, in September, during 8.6 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Bowman, during the entire year, the rain falls for 99.3 days and collects up to 14.41" (366mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Bowman. Throughout September, in the average 0.4 snowfall days, it receives 0.04" (1mm) of snow. In Bowman, during the entire year, snow falls for 63.8 days and aggregates up to 23.62" (600mm) of snow.Daylight
In Bowman, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:34 pm MDT.
Sunshine
The average sunshine in September is 10h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow in Bowman?
How many hours of daylight does Bowman have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Bowman, ND
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Bowman, ND
- Average pressure in September: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Bowman, ND
- Average wind speed in September: 10.7mph
The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest months (with the lowest average wind speed) are July and August (9.8mph).
Average humidity in September
Bowman, ND
- Average humidity in September: 50%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Bowman, ND
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (2.32").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days in September
Bowman, ND
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Bowman, ND
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Bowman, ND
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (12.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Bowman, ND
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Bowman, ND
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is April (12.2 days).
Average UV index in September
Bowman, 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, November and December (UV index 1).
Average cloud cover in September
Bowman, ND
- Average cloud cover in September: 22
The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Bowman, ND
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Bowman, North Dakota, USA
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