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's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 75.7°F (24.3°C) in August to an enjoyable 66.9°F (19.4°C). Arnold reports an average nighttime low-temperature of 48.6°F (9.2°C) in September.Humidity
The average relative humidity in September is 78%.Rainfall
In Arnold, during September, the rain falls for 12.7 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 116.4 rainfall days, and 22.36" (568mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Arnold.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September in Arnold, sunrise is at 6:28 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What is the temperature in September in Arnold?
What is the average humidity in September in Arnold?
How many days does it rain in September in Arnold?
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 are sunrise and 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, MN
- Average high temperature in September: 66.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (16.2°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (3.4°F).
Average pressure in September
Arnold, MN
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Arnold, MN
- Average wind speed in September: 7.6mph
The windiest months (with the highest average wind speed) are February and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Arnold, MN
- Average humidity in September: 78%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Arnold, MN
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in September
Arnold, MN
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
Arnold, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (8.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Arnold, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (17.9 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, MN
- 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Arnold, MN
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Arnold, MN
- 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, February, November and December (UV index 1).
Average cloud cover in September
Arnold, MN
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Arnold, MN
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Arnold, Minnesota, USA
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