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
September brings a minor shift in the average high-temperature, adjusting from a warm 76.8°F (24.9°C) in August to an agreeable 70°F (21.1°C). In September, Harrison experiences a temperature dip to an average of 50.7°F (10.4°C) at night.Humidity
In Harrison, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 11 days and accumulates 0.87" (22mm) of precipitation.Snowfall
In Harrison, snow does not fall in June through September.Daylight
In Harrison, the average length of the day in September is 12h and 30min.On the first day of September in Harrison, Michigan, sunrise is at 7:03 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September in Harrison, Michigan, is 7.9h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What is the average September temperature in Harrison?
What is the average humidity in September in Harrison?
What is the driest month in Harrison?
How many days does it rain in September in Harrison?
When it does not snow in Harrison?
Does it snow in Harrison in September?
What is the average length of the day in September in Harrison?
When is the sunrise / sunset in September in Harrison?
How long on average sun shines in September in Harrison?
What is the UV index reading in September in Harrison?
Average temperature in September
Harrison, MI
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in September
Harrison, 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
Harrison, MI
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Harrison, MI
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Harrison, MI
- Average rainfall in September: 0.87"
The wettest months (with the highest rainfall) are May and October (2.68").
The driest month (with the least rainfall) is September (0.87").
Average rainfall days in September
Harrison, MI
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in September
Harrison, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Harrison, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harrison, 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: 7h and 5min
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 6min).
Average sunshine days in September
Harrison, MI
- Average sunshine days in September: 16 days
The month with the most sunshine days is September (16 days).
The month with the least sunshine days is January (10.5 days).
Average UV index in September
Harrison, MI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Harrison, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Harrison, MI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, October and November (6mi).
The month with the lowest visibility is January (4mi).
Harrison, Michigan, USA
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