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 brings a slight decrease in the average high-temperature, shifting from a warm 77.5°F (25.3°C) in August to a pleasant 69.8°F (21°C). In Marion, the average low-temperature during the month of September is a cool 50.9°F (10.5°C).Humidity
In September, the average relative humidity in Marion is 80%.Rainfall
In Marion, during September, the rain falls for 10.9 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 122.7 rainfall days, and 19.72" (501mm) of precipitation is accumulated.Snowfall
In Marion, snow does not fall in June through September.Daylight
In Marion, the average length of the day in September is 12h and 31min.On the first day of September in Marion, sunrise is at 6:18 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:37 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September in Marion is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 3 in September transforms into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the average September temperature in Marion?
What is the average humidity in September in Marion?
How many days does it rain in September in Marion?
When it does not snow in Marion?
Does it snow in Marion in September?
What is the average length of the day in September in Marion?
When are sunrise and sunset in September in Marion?
How long on average sun shines in September in Marion?
How high is the UV index in September in Marion?
Average temperature in September
Marion, WI
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (21.7°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Marion, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Marion, WI
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in September
Marion, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Marion, WI
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in September
Marion, WI
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in September
Marion, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Marion, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Marion, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 2min
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 30min).
Average sunshine days in September
Marion, WI
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is January (18.5 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Marion, WI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Marion, WI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Marion, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February and September (5mi).
Marion, Wisconsin, USA
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