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
September comes with a decrease in the average high-temperature, falling from a warm 82°F (27.8°C) in August to an agreeable 71.8°F (22.1°C). In September, Arnold reports a consistent average low-temperature of 51.8°F (11°C) during the nights.Humidity
The average relative humidity in September in Arnold, North Dakota, is 57%.Rainfall
In September, the rain falls for 8.9 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. Throughout the year, in Arnold, there are 94.3 rainfall days, and 14.29" (363mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Arnold.Daylight
In September, the average length of the day in Arnold is 12h and 32min.On the first day of September, sunrise is at 7:03 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:23 pm CDT.
Sunshine
In Arnold, North Dakota, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Arnold is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What are the temperatures in Arnold in September?
What is the average humidity in September in Arnold?
How much does it rain in Arnold in September?
When it does not snow in Arnold?
Does it snow in Arnold in September?
What is the average length of the day in September in Arnold?
When is the sunrise / sunset in September in Arnold?
How long on average sun shines in September in Arnold?
What is the UV index intensity in September in Arnold?
Average temperature in September
Arnold, ND
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 51.8°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 (6.3°F).
Average pressure in September
Arnold, 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
Arnold, ND
- Average wind speed in September: 9.9mph
The windiest months (with the highest average wind speed) are April and October (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Arnold, ND
- Average humidity in September: 57%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Arnold, ND
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Arnold, ND
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is June (13.1 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Arnold, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Arnold, ND
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Arnold, ND
- Average daylight in September: 12h and 3min
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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Arnold, 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 June (14.6 days).
Average UV index in September
Arnold, 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 November and December (UV index 1).
Average cloud cover in September
Arnold, ND
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Arnold, 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).
Arnold, North Dakota, USA
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