September weather forecast
Baraboo, WI

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Weather in September

September announces the arrival of fall in Baraboo, with temperatures dipping to an average high of 70.9°F (21.6°C). The month is characterized by a decrease in humidity and a drop in rainfall to 0.75" (19mm), indicating a transition into the drier fall season. Days in September offer moderate temperatures and low rainfall frequency, indicating a lean towards an impending winter season. The city embraces the fall colours during this time. With cooler evenings, residents enjoy this transitional period from summer heat to fall chills.

Temperature

The onset of September brings a small shift in high-temperatures, falling from a warm 77.5°F (25.3°C) in August to an agreeable 70.9°F (21.6°C). Throughout the month of September, Baraboo reports a steady low-temperature average of 51.4°F (10.8°C).

Humidity

The average relative humidity in September is 80%.

Rainfall

In Baraboo, during September, the rain falls for 8.2 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Baraboo, during the entire year, the rain falls for 88.4 days and collects up to 7.4" (188mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Baraboo, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:23 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:41 pm CDT.

Sunshine

In Baraboo, the average sunshine in September is 8.7h.

UV index

In September, the average daily maximum UV index in Baraboo, Wisconsin, is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the UV index of 3 transforms into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

What is the average September temperature in Baraboo?

During September, Baraboo experiences an average high-temperature of 70.9°F (21.6°C) and a low-temperature of 51.4°F (10.8°C).

What is the average humidity in September in Baraboo?

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

How many days does it rain in September in Baraboo?

In Baraboo, Wisconsin, in September, during 8.2 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

When it does not snow in Baraboo?

In Baraboo, Wisconsin, snow does not fall in May through September.

Does it snow in Baraboo in September?

In Baraboo, Wisconsin, in September, it doesn't snow. In October, it regularly snows.

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

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

When are sunrise and sunset in September in Baraboo?

On the first day of September in Baraboo, sunrise is at 6:23 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:41 pm CDT.

How many hours of sunshine does Baraboo have in September?

In Baraboo, the average sunshine duration in September is 8.7h.

What is the UV index reading in September in Baraboo?

In September, the average daily maximum UV index in Baraboo, Wisconsin, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
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
Baraboo, WI

Average temperature in September - Baraboo, WI
  • Average high temperature in September: 70.9°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in September: 51.4°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (10°F).

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Average pressure in September
Baraboo, WI

Average pressure in September - Baraboo, WI
  • Average pressure in September: 30.03"Hg

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Baraboo, WI

Average wind speed in September - Baraboo, WI
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in September
Baraboo, WI

Average humidity in September - Baraboo, WI
  • Average humidity in September: 80%

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

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Average rainfall in September
Baraboo, WI

Average rainfall in September - Baraboo, WI
  • Average rainfall in September: 0.75"

The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is January (0.28").

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Average rainfall days in September
Baraboo, WI

Average rainfall days in September - Baraboo, WI
  • Average rainfall days in September: 8.2 days

The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is February (2.2 days).

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Average snowfall in September
Baraboo, WI

Average snowfall in September - Baraboo, WI
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Baraboo, WI

Average snowfall days in September - Baraboo, WI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Baraboo, WI

Average daylight in September / Average sunshine in September - Baraboo, WI
  • 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: 8h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in September
Baraboo, WI

Average sunshine days in September - Baraboo, WI
  • Average sunshine days in September: 19.9 days

The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is June (13.8 days).

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Average UV index in September
Baraboo, WI

Average UV index in September - Baraboo, WI
  • Average UV index in September: 3

The months with the highest UV index are June and 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
Baraboo, WI

Average cloud cover in September - Baraboo, WI
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in September
Baraboo, WI

Average visibility in September - Baraboo, WI
  • Average visibility in September: 5mi

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

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Baraboo, Wisconsin, USA

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