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 advent of September brings a slight shift in average high-temperature, moving from a warm 78.4°F (25.8°C) in August to a pleasant 70.9°F (21.6°C). In September, the temperature drops to an average of 51.6°F (10.9°C) at night.Humidity
The average relative humidity in September is 74%.Rainfall
In Darwin, in September, it is raining for 10.2 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, there are 99.1 rainfall days, and 11.89" (302mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:15 am and sunset at 6:59 pm CDT.
Sunshine
In Darwin, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Darwin have in September?
What is the UV index reading in September?
Average temperature in September
Darwin, MN
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (19.2°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.7°F).
Average pressure in September
Darwin, MN
- Average pressure in September: 29.99"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Darwin, MN
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Darwin, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Darwin, MN
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is June (2.01").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Darwin, MN
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in September
Darwin, MN
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Darwin, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Darwin, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Darwin, MN
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is June (13.3 days).
Average UV index in September
Darwin, MN
- Average UV index in September: 4
The months with the highest UV index are June and 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
Darwin, MN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Darwin, MN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Darwin, Minnesota, USA
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