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
In Marcellus, the average high-temperature in September slightly decreases from a moderately hot 78.4°F (25.8°C) in August to an agreeable 72.7°F (22.6°C). In Marcellus, an average nighttime temperature of 54.3°F (12.4°C) is expected during September.Humidity
In Marcellus, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 11.3 days. Throughout September, 0.83" (21mm) of precipitation is accumulated. In Marcellus, during the entire year, the rain falls for 124.9 days and collects up to 12.95" (329mm) of precipitation.Snowfall
In Marcellus, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 7:09 am and sunset at 8:16 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:26 pm EDT.
Sunshine
The average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Marcellus in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Marcellus have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Marcellus, MI
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 54.3°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 (18.1°F).
Average pressure in September
Marcellus, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Marcellus, MI
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Marcellus, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in September
Marcellus, MI
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is May (1.73").
The driest months (with the least rainfall) are January, February, November and December (0.63").
Average rainfall days in September
Marcellus, MI
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in September
Marcellus, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Marcellus, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Marcellus, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Marcellus, MI
- Average sunshine days in September: 15.2 days
The months with the most sunshine days are November and December (18.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Marcellus, MI
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Marcellus, MI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Marcellus, MI
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
Marcellus, Michigan, USA
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