September weather forecast and climate
Hart, MI

Weather in September

September, the first month of the autumn, in Hart, is also an enjoyable month, with temperature in the range of an average high of 67.6°F (19.8°C) and an average low of 57.7°F (14.3°C).

Temperature

In Hart, the average high-temperature marginally drops, from a moderately hot 73.6°F (23.1°C) in August, to an enjoyable 67.6°F (19.8°C). In September, in Hart, the average low-temperature is 57.7°F (14.3°C).

Humidity

The average relative humidity in Hart is 77%.

Rainfall

In September, the rain falls for 13.5 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. Throughout the year, in Hart, there are 140.3 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Hart.

Daylight

The average length of the day in September is 12.5h.

Sunshine

The average sunshine in Hart is 8.3h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in September in Hart?

In September, the average relative humidity in Hart, Michigan, is 77%.

How much does it rain in Hart in September?

In Hart, Michigan, in September, it is raining for 13.5 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow in Hart?

In Hart snow does not fall in June through September.

Does it snow in Hart in September?

In Hart, Michigan, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Hart have in September?

In Hart, Michigan, the average length of the day in September is 12.5h.

How long on average sun shines in September in Hart?

In Hart, Michigan, the average sunshine in September is 8.3h.

What is the UV index reading in September in Hart?

In September, the average daily maximum UV index in Hart, Michigan, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Hart, MI

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).

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Average pressure in September
Hart, MI

Average pressure in September - Hart, MI
  • Average pressure in September: 30.03"

The month with the highest atmospheric pressure is March (30.09").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in September
Hart, MI

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).

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Average humidity in September
Hart, MI

Average humidity in September - Hart, MI
  • Average humidity in September: 77%

The month with the highest relative humidity is January (85%).
Months with the lowest relative humidity are April and October (76%).

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Average rainfall in September
Hart, MI

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").

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Average rainfall days in September
Hart, MI

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).

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Average snowfall in September
Hart, MI

Average snowfall in September - Hart, MI
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Hart, MI

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).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Hart, MI

Average daylight in September / Average sunshine in September - Hart, MI
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 8.3h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is January (Average sunshine: 2.1h).

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Average sunshine days in September
Hart, MI

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).

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Average UV index in September
Hart, MI

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).
Months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in September
Hart, MI

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).

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Average visibility in September
Hart, MI

Average visibility in September - Hart, MI
  • Average visibility in September: 6mi

Months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February and December (5mi).

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