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 the transition to September, Freeport observes a minor drop in the average high-temperature, shifting from a moderately hot 78.3°F (25.7°C) in August to an agreeable 72.5°F (22.5°C). Throughout the month of September, Freeport expects an average low of 53.2°F (11.8°C).Humidity
In Freeport, the average relative humidity in September is 79%.Rainfall
In Freeport, during September, the rain falls for 11 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 133.3 rainfall days, and 14.92" (379mm) of precipitation is accumulated.Snowfall
In Freeport, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:15 pm. On the last day of September, sunrise is at 7:38 am and sunset at 7:23 pm EDT.
Sunshine
In Freeport, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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 is the sunrise / sunset in September in Freeport?
How many hours of sunshine does Freeport have in September?
What is the UV index intensity in September?
Average temperature in September
Freeport, MI
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in September
Freeport, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Freeport, MI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Freeport, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Freeport, MI
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is November (0.79").
Average rainfall days in September
Freeport, MI
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Freeport, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Freeport, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Freeport, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Freeport, MI
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is January (10.4 days).
Average UV index in September
Freeport, MI
- Average UV index in September: 4
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Freeport, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Freeport, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, September and December (5mi).
Freeport, Michigan, USA
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