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 shift from August to September includes a small decrease in the average high-temperature, from a warm 74.5°F (23.6°C) to an agreeable 68.4°F (20.2°C). During September, the temperature tends to dip to an average of 55.9°F (13.3°C) at night.Humidity
In September, the average relative humidity is 79%.Rainfall
In Bay Port, during September, the rain falls for 13.1 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Bay Port, during the entire year, the rain falls for 150.8 days and collects up to 22.99" (584mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:57 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:15 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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 in Bay Port?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Bay Port, MI
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in September
Bay Port, 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 (29.93"Hg).
Average wind speed in September
Bay Port, MI
- Average wind speed in September: 8.9mph
The windiest months (with the highest average wind speed) are January and December (11.9mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Bay Port, MI
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in September
Bay Port, MI
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in September
Bay Port, MI
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is October (16.3 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Bay Port, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.9").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Bay Port, 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
Bay Port, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Bay Port, MI
- Average sunshine days in September: 15 days
The month with the most sunshine days is September (15 days).
The months with the least sunshine days are February and December (8.7 days).
Average UV index in September
Bay Port, MI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Bay Port, MI
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Bay Port, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Bay Port, Michigan, USA
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