September weather forecastHart, MI
September
Weather in September
September, the first month of the autumn in Hart, is also an enjoyable month, with an average temperature fluctuating between 57.7°F (14.3°C) and 67.6°F (19.8°C).Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's warm 73.6°F (23.1°C) to a comfortable 67.6°F (19.8°C). In Hart, an average low-temperature of 57.7°F (14.3°C) is recorded during September nights.Humidity
The average relative humidity in September is 77%.Rainfall
In September, in Hart, the rain falls for 13.5 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. In Hart, during the entire year, the rain falls for 140.3 days and collects up to 25.08" (637mm) of precipitation.Snowfall
In Hart, snow does not fall in June through September.Daylight
The average length of the day in September in Hart is 12h and 29min.On the first day of the month, sunrise is at 7:09 am and sunset at 8:20 pm. On the last day of September, in Hart, sunrise is at 7:42 am and sunset at 7:27 pm EDT.
Sunshine
In September, the average sunshine in Hart, Michigan, is 8.3h.UV index
In Hart, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hart, MI
- Average high temperature in September: 67.6°F
The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is August (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Hart, 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
Hart, MI
- Average wind speed in September: 10.4mph
The windiest month (with the highest average wind speed) is November (13.1mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).
Average humidity in September
Hart, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in September
Hart, MI
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is October (3.46").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in September
Hart, MI
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Hart, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hart, 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
Hart, MI
- Average daylight in September: 12h and 30min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in September
Hart, MI
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is July (14.8 days).
The month with the least sunshine days is January (6.3 days).
Average UV index in September
Hart, MI
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Hart, MI
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Hart, 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).
