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
The onset of September brings a small change in high-temperatures, falling from a moderately hot 81.3°F (27.4°C) in August to an agreeable 71.1°F (21.7°C). Throughout September, Underwood encounters an average temperature drop to a fresh 51.3°F (10.7°C).Humidity
In Underwood, the average relative humidity in September is 57%.Rainfall
In Underwood, during September, the rain falls for 9.1 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Underwood, during the entire year, the rain falls for 100.5 days and collects up to 15.2" (386mm) of precipitation.Snowfall
June through September are months without snowfall in Underwood.Daylight
In Underwood, North Dakota, the average length of the day in September is 12h and 33min.On the first day of September in Underwood, sunrise is at 7:04 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:25 pm CDT.
Sunshine
In Underwood, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Make use of precautions - Suggestions to resist sunburn are communicated. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What is the average September temperature in Underwood?
What is the average humidity in September in Underwood?
How many days does it rain in September in Underwood?
When it does not snow in Underwood?
Does it snow in Underwood in September?
What is the average length of the day in September in Underwood?
What time are sunrise and sunset in September in Underwood?
How long on average sun shines in September in Underwood?
How high is the UV index in September in Underwood?
Average temperature in September
Underwood, ND
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in September
Underwood, 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
Underwood, ND
- Average wind speed in September: 10.3mph
The windiest months (with the highest average wind speed) are April and October (11.1mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity in September
Underwood, ND
- Average humidity in September: 57%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Underwood, ND
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (2.6").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in September
Underwood, ND
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is June (14.9 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in September
Underwood, ND
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Underwood, ND
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Underwood, ND
- Average daylight in September: 12h and 3min
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 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 42min).
Average sunshine days in September
Underwood, ND
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in September
Underwood, 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 and December (UV index 1).
Average cloud cover in September
Underwood, ND
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Underwood, 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).
Underwood, North Dakota, USA
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