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 sees a slight reduction in average high-temperature, with a shift from a moderately hot 77.2°F (25.1°C) in August to a pleasant 70.9°F (21.6°C). Hamilton observes an average low-temperature of 56.5°F (13.6°C) during September nights.Humidity
The average relative humidity in September is 77%.Rainfall
In Hamilton, in September, it is raining for 14.2 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 149.3 rainfall days, and 25.91" (658mm) of precipitation is accumulated.Snowfall
In Hamilton, 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 7:09 am and sunset at 8:17 pm. On the last day of September, sunrise is at 7:40 am and sunset at 7:26 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, a regular UV index of 4 translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
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?
What time are sunrise and sunset in September in Hamilton?
How many hours of sunshine does Hamilton have in September?
What is the UV index intensity in September?
Average temperature in September
Hamilton, MI
- Average high temperature in September: 70.9°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 (29.1°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in September
Hamilton, 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
Hamilton, MI
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Hamilton, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in September
Hamilton, MI
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are February and November (1.5").
Average rainfall days in September
Hamilton, MI
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is October (17.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Hamilton, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hamilton, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hamilton, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Hamilton, MI
- Average sunshine days in September: 14 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is January (7.4 days).
Average UV index in September
Hamilton, MI
- Average UV index in September: 4
The months with the highest UV index are June, 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
Hamilton, MI
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Hamilton, 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).
Hamilton, Michigan, USA
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