September weather forecast
Twin Bluffs, WI

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Weather in September

September, the first month of the autumn in Twin Bluffs, is still a pleasant month, with an average temperature varying between 51.1°F (10.6°C) and 71.6°F (22°C).

Temperature

September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 78.8°F (26°C) to a pleasant 71.6°F (22°C). In the month of September, Twin Bluffs's average low-temperature falls to a fresh 51.1°F (10.6°C).

Humidity

The average relative humidity in September in Twin Bluffs is 80%.

Rainfall

In September, in Twin Bluffs, Wisconsin, the rain falls for 12.5 days. Throughout September, 2.76" (70mm) of precipitation is accumulated. Throughout the year, in Twin Bluffs, Wisconsin, there are 147.8 rainfall days, and 30.94" (786mm) of precipitation is accumulated.

Snowfall

In Twin Bluffs, snow does not fall in May through September.

Daylight

In Twin Bluffs, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:35 pm. On the last day of September, in Twin Bluffs, Wisconsin, sunrise is at 6:58 am and sunset at 6:43 pm CDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

In Twin Bluffs, 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 radiation for average individuals.
Note: The maximum UV index of 3 during September leads to these instructions:
Exercise prevention - Precautions against solar damage are endorsed. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

What are the temperatures in Twin Bluffs in September?

During September, Twin Bluffs experiences an average high-temperature of 71.6°F (22°C) and a low-temperature of 51.1°F (10.6°C).

What is the average humidity in September in Twin Bluffs?

The average relative humidity in September is 80%.

How much does it rain in Twin Bluffs in September?

In Twin Bluffs, Wisconsin, during September, the rain falls for 12.5 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in Twin Bluffs?

May through September are months without snowfall.

Does it snow in Twin Bluffs in September?

In Twin Bluffs, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Twin Bluffs?

In September, the average day length in Twin Bluffs is 12h and 29min.

When are sunrise and sunset in September in Twin Bluffs?

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:35 pm. On the last day of the month, in Twin Bluffs, Wisconsin, sunrise is at 6:58 am and sunset at 6:43 pm CDT.

How long on average sun shines in September in Twin Bluffs?

In Twin Bluffs, Wisconsin, the average sunshine duration in September is 8.7h.

What is the UV index reading in September in Twin Bluffs?

In Twin Bluffs, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Twin Bluffs, WI

Average temperature in September - Twin Bluffs, WI
  • Average high temperature in September: 71.6°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in September: 51.1°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

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Average pressure in September
Twin Bluffs, WI

Average pressure in September - Twin Bluffs, WI
  • Average pressure in September: 30.02"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Twin Bluffs, WI

Average wind speed in September - Twin Bluffs, WI
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in September
Twin Bluffs, WI

Average humidity in September - Twin Bluffs, WI
  • Average humidity in September: 80%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in September
Twin Bluffs, WI

Average rainfall in September - Twin Bluffs, WI
  • Average rainfall in September: 2.76"

The wettest month (with the highest rainfall) is June (4.53").
The driest month (with the least rainfall) is January (1.18").

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Average rainfall days in September
Twin Bluffs, WI

Average rainfall days in September - Twin Bluffs, WI
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in September
Twin Bluffs, WI

Average snowfall in September - Twin Bluffs, WI
  • Average snowfall in September: 0"

The month with the highest snowfall is February (6.02").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Twin Bluffs, WI

Average snowfall days in September - Twin Bluffs, WI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15 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
Twin Bluffs, WI

Average daylight in September / Average sunshine in September - Twin Bluffs, WI
  • 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 0min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in September
Twin Bluffs, WI

Average sunshine days in September - Twin Bluffs, WI
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (8.6 days).

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Average UV index in September
Twin Bluffs, WI

Average UV index in September - Twin Bluffs, WI
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in September
Twin Bluffs, WI

Average cloud cover in September - Twin Bluffs, WI
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
Twin Bluffs, WI

Average visibility in September - Twin Bluffs, WI
  • Average visibility in September: 5mi

The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Twin Bluffs, Wisconsin, USA

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