October weather forecastBismarck, ND

October
Weather in October
October in Bismarck is synonymous with autumn; the leaves are at their peak of color, temperatures continue to drop, and occasional rain showers persist. In a surprising turn of events, the city witnesses an unseasonal 1.65" (42mm) of snowfall. The transition of Bismarck from autumn to winter becomes perceptible throughout October. This becomes evident through the gradual drop in daylight hours and a marked change in foliage coloration.Temperature
Bismarck sees a considerable decrease in average high-temperatures during October, falling from a pleasant 72°F (22.2°C) in September to a cool 54°F (12.2°C). In the month of October, Bismarck records a consistent average low-temperature of 38.5°F (3.6°C).Humidity
In October, the average relative humidity is 63%.Rainfall
In Bismarck, during October, the rain falls for 8.6 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Bismarck, during the entire year, the rain falls for 105.9 days and collects up to 15" (381mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 3.2 snowfall days, it receives 1.65" (42mm) of snow. Throughout the year, there are 73.7 snowfall days, and 23.11" (587mm) of snow is accumulated.Daylight
In Bismarck, the average length of the day in October is 10h and 52min.On the first day of the month, sunrise is at 7:42 am and sunset at 7:22 pm. On the last day of October, sunrise is at 8:25 am and sunset at 6:28 pm CDT.
Sunshine
In October, the average sunshine is 6.5h.UV index
In Bismarck, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In October, the maximum UV index of 2 suggests these recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Bismarck, ND
- Average high temperature in October: 54°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in October: 38.5°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).
Average pressure in October
Bismarck, ND
- Average pressure in October: 29.97"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 October
Bismarck, ND
- Average wind speed in October: 10.6mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in October
Bismarck, ND
- Average humidity in October: 63%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (55%).
Average rainfall in October
Bismarck, ND
- Average rainfall in October: 1.3"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in October
Bismarck, ND
- Average rainfall days in October: 8.6 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in October
Bismarck, ND
- Average snowfall in October: 1.65"
The month with the highest snowfall is February (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Bismarck, ND
- Average snowfall days in October: 3.2 days
The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Bismarck, ND
- Average daylight in October: 10h and 54min
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 October: 6h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in October
Bismarck, ND
- Average sunshine days in October: 18.8 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in October
Bismarck, ND
- Average UV index in October: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in October
Bismarck, ND
- Average cloud cover in October: 36
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility in October
Bismarck, ND
- Average visibility in October: 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).





