September weather forecast
Vassar, MI

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Weather in September

September, the first month of the autumn in Vassar, is also an agreeable month, with an average temperature varying between 70.5°F (21.4°C) and 53.1°F (11.7°C).

Temperature

With the arrival of September, Vassar experiences a modest decline in average high-temperatures, transitioning from a warm 76.6°F (24.8°C) in August to a pleasant 70.5°F (21.4°C). September nights in Vassar are marked by an average low-temperature of 53.1°F (11.7°C).

Humidity

The average relative humidity in September in Vassar is 80%.

Rainfall

In September, the rain falls for 11.7 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. Throughout the year, there are 139.3 rainfall days, and 19.96" (507mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day in Vassar is 12h and 29min.
On the first day of the month, sunrise is at 6:59 am and sunset at 8:09 pm. On the last day of September, in Vassar, sunrise is at 7:31 am and sunset at 7:16 pm EDT.

Sunshine

In September, the average sunshine in Vassar is 7.9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the temperature in September in Vassar?

During September, Vassar experiences an average high-temperature of 70.5°F (21.4°C) and a low-temperature of 53.1°F (11.7°C).

What is the average humidity in September in Vassar?

In Vassar, Michigan, the average relative humidity in September is 80%.

How many days does it rain in September in Vassar?

In Vassar, in September, it is raining for 11.7 days, with typically 1.34" (34mm) of accumulated precipitation.

When it does not snow in Vassar?

In Vassar, snow does not fall in June through September.

Does it snow in Vassar in September?

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

What is the average length of the day in September in Vassar?

The average day length in September in Vassar, Michigan, is 12h and 29min.

When is the sunrise / sunset in September in Vassar?

In September, on the first day of the month, sunrise is at 6:59 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:16 pm EDT.

How long on average sun shines in September in Vassar?

In Vassar, Michigan, the average sunshine duration in September is 7.9h.

What is the UV index reading in September in Vassar?

In Vassar, Michigan, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Vassar, MI

Average temperature in September - Vassar, MI
  • Average high temperature in September: 70.5°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 (27°F).

  • Average low temperature in September: 53.1°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in September
Vassar, MI

Average pressure in September - Vassar, 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 (29.93"Hg).

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Average wind speed in September
Vassar, MI

Average wind speed in September - Vassar, MI
  • Average wind speed in September: 7.5mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in September
Vassar, MI

Average humidity in September - Vassar, MI
  • Average humidity in September: 80%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in September
Vassar, MI

Average rainfall in September - Vassar, MI
  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is December (1.06").

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Average rainfall days in September
Vassar, MI

Average rainfall days in September - Vassar, MI
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (4.5 days).

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Average snowfall in September
Vassar, MI

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

The month with the highest snowfall is February (4.33").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Vassar, MI

Average snowfall days in September - Vassar, MI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (16.6 days).
The 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
Vassar, MI

Average daylight in September / Average sunshine in September - Vassar, 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 18min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in September
Vassar, MI

Average sunshine days in September - Vassar, MI
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is February (8.9 days).

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Average UV index in September
Vassar, MI

Average UV index in September - Vassar, 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 and December (UV index 1).

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Average cloud cover in September
Vassar, MI

Average cloud cover in September - Vassar, MI
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in September
Vassar, MI

Average visibility in September - Vassar, 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).

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Vassar, Michigan, USA

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