September weather forecastDerrick, ND
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Derrick, North Dakota, with an average temperature fluctuating between 67.8°F (19.9°C) and 49.6°F (9.8°C).Temperature
The arrival of September corresponds with a temperature reduction, down from August's warm 78.3°F (25.7°C) to a comfortable 67.8°F (19.9°C). Derrick's nighttime temperature during September is consistently averaged at a frosty 49.6°F (9.8°C).Humidity
The average relative humidity in September is 62%.Rainfall
In Derrick, in September, during 9.7 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 105.9 rainfall days, and 16.69" (424mm) of precipitation is accumulated.Snowfall
In Derrick, snow does not fall in June through September.Daylight
In Derrick, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:52 am and sunset at 8:15 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:14 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Derrick, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Enhance your sun protection with tightly woven, yet airy clothing. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Derrick, ND
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is August (78.3°F).
The month with the lowest average high temperature is January (13.5°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (0.5°F).
Average pressure in September
Derrick, ND
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Derrick, ND
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is October (11.2mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
Derrick, ND
- Average humidity in September: 62%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Derrick, ND
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is June (2.99").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in September
Derrick, ND
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is June (19 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in September
Derrick, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Derrick, ND
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Derrick, ND
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Derrick, ND
- Average sunshine days in September: 19 days
The month with the most sunshine days is August (20.1 days).
The month with the least sunshine days is June (8.7 days).
Average UV index in September
Derrick, 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, November and December (UV index 1).
Average cloud cover in September
Derrick, ND
- Average cloud cover in September: 30
The months with the most cloud cover are January and February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Derrick, ND
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
