September weather forecastWatford City, ND
September
Weather in September
September in Watford City is a significant turning point where summer fades into fall. Temperatures gradually drop to a comfortable range with the maximum temperature hovering at 71.2°F (21.8°C). The arrival of autumn is accompanied by shorter daylight hours, signaling an end to the bright summer days. The weather becomes more balanced with cooler nights and moderately warm days. September's milder conditions wrap Watford City in a comfortable fall atmosphere perfect for enjoying the area’s vibrant fall colors.Temperature
Watford City in September demonstrates a small temperature transition, adjusting from an average high of a warm 81.9°F (27.7°C) in August to an agreeable 71.2°F (21.8°C). Watford City registers a consistent average low-temperature of 52.2°F (11.2°C) during September.Humidity
The average relative humidity in September is 51%.Rainfall
In Watford City, in September, during 8.1 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, there are 91.6 rainfall days, and 12.64" (321mm) of precipitation is accumulated.Snowfall
In Watford City, snow does not fall in June through September.Daylight
In Watford City, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:12 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:33 pm MDT.
Sunshine
In September, the average sunshine 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 health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Watford City, 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
Watford City, 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
Watford City, 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
Watford City, 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
Watford City, 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
Watford City, 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
Watford City, 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
Watford City, 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
Watford City, 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 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
Watford City, 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
Watford City, 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
Watford City, 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
Watford City, 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).
