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
As September commences, the average high-temperature subtly reduces, transitioning from a moderately hot 76.1°F (24.5°C) in August to a pleasant 68.9°F (20.5°C). The nighttime temperature, during September, averages of 50.2°F (10.1°C).Humidity
In Grayling, the average relative humidity in September is 79%.Rainfall
In Grayling, in September, during 11.5 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 132.1 rainfall days, and 21.81" (554mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Grayling, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 7:02 am and sunset at 8:15 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:20 pm EDT.
Sunshine
In September, the average sunshine in Grayling is 7.8h.UV index
In September, the average daily maximum UV index in Grayling is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 3 in September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Grayling?
What is the average humidity in September in Grayling?
How much does it rain in Grayling in September?
When it does not snow in Grayling?
Does it snow in Grayling in September?
What is the average length of the day in September in Grayling?
When are sunrise and sunset in September in Grayling?
How long on average sun shines in September in Grayling?
What is the UV index reading in September in Grayling?
Average temperature in September
Grayling, MI
- Average high temperature in September: 68.9°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 (23.4°F).
- Average low temperature in September: 50.2°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 (14.4°F).
Average pressure in September
Grayling, MI
- Average pressure in September: 30.02"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
Grayling, MI
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in September
Grayling, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Grayling, MI
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is October (2.68").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in September
Grayling, MI
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Grayling, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (9.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grayling, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grayling, MI
- 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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in September
Grayling, MI
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is January (7 days).
Average UV index in September
Grayling, 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, February, November and December (UV index 1).
Average cloud cover in September
Grayling, MI
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Grayling, MI
- Average visibility in September: 5mi
The months with the highest visibility are April, May and June (6mi).
The months with the lowest visibility are January, February and December (4mi).
Grayling, Michigan, USA
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