September weather forecastDickinson, ND
September
Weather in September
Hinting at autumn, September in Dickinson sees a drop in the mercury level, without the oppressive summer heat. However, a blend of lower temperatures and agreeable rainfall of about 1.5" (38mm), provides a perfect setup for the fall foliage. The sunset timings gradually inch forward, trimming the sunlit hours of the day. September can be an idyllic month to enjoy Dickinson's changing fauna without the scorching summer heat. The month brings a pleasant mix of long, warm days and cooler nights, signaling a slow, gentle transition to autumn.Temperature
The shift from August to September in Dickinson, North Dakota, corresponds with a decrease in the average high-temperature, down to a pleasant 71.4°F (21.9°C) from a moderately hot 81.7°F (27.6°C). The average nighttime temperature lowers to a fresh 52.7°F (11.5°C) throughout September.Humidity
The average relative humidity in September in Dickinson is 52%.Rainfall
In Dickinson, in September, during 8.2 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, in Dickinson, there are 90.5 rainfall days, and 13.78" (350mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Dickinson.Daylight
In September, the average length of the day is 12h and 32min.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 Dickinson, sunrise is at 6:49 am and sunset at 6:32 pm MDT.
Sunshine
In September, the average sunshine is 9.8h.UV index
In September, the average daily maximum UV index in Dickinson is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Act with care - The suggestion to avoid sunburn is emphasized. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dickinson, ND
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Dickinson, ND
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Dickinson, ND
- Average wind speed in September: 10.5mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in September
Dickinson, ND
- Average humidity in September: 52%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (51%).
Average rainfall in September
Dickinson, ND
- Average rainfall in September: 1.5"
The wettest months (with the highest rainfall) are May and July (1.93").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Dickinson, ND
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is June (12.9 days).
The months with the least rainy days are January and February (2.3 days).
Average snowfall in September
Dickinson, ND
- Average snowfall in September: 0"
The month with the highest snowfall is November (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dickinson, ND
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (11.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Dickinson, ND
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 9h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 24min).
Average sunshine days in September
Dickinson, ND
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is April (14.4 days).
Average UV index in September
Dickinson, ND
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Dickinson, ND
- Average cloud cover in September: 24
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Dickinson, 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).
