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 transition into September involves a small decrease in the average high-temperature, dipping slightly from a moderately hot 78.1°F (25.6°C) in August to a pleasant 71.6°F (22°C). During September, Keego Harbor sees a mean low-temperature of 54.3°F (12.4°C).Humidity
In Keego Harbor, the average relative humidity in September is 78%.Rainfall
In September, the rain falls for 13 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. In Keego Harbor, Michigan, during the entire year, the rain falls for 152.6 days and collects up to 24.88" (632mm) of precipitation.Snowfall
In Keego Harbor, snow does not fall in June through September.Daylight
In Keego Harbor, Michigan, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:59 am and sunset at 8:07 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:15 pm EDT.
Sunshine
In Keego Harbor, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index in Keego Harbor is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Undertake precautions - Guarding against sun damage is counselled. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the usual temperature for Keego Harbor in September?
What is the average humidity in September in Keego Harbor?
How many days does it rain in September in Keego Harbor?
When it does not snow in Keego Harbor?
Does it snow in Keego Harbor in September?
How many hours of daylight does Keego Harbor have in September?
When is the sunrise / sunset in September in Keego Harbor?
How many hours of sunshine does Keego Harbor have in September?
How high is the UV index in September in Keego Harbor?
Average temperature in September
Keego Harbor, MI
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Keego Harbor, MI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Keego Harbor, MI
- Average wind speed in September: 7.2mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Keego Harbor, MI
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Keego Harbor, MI
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days in September
Keego Harbor, MI
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Keego Harbor, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Keego Harbor, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Keego Harbor, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Keego Harbor, MI
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is January (9.5 days).
Average UV index in September
Keego Harbor, MI
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Keego Harbor, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Keego Harbor, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Keego Harbor, Michigan, USA
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