September weather forecast
Columbus, WI

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Weather in September

The first month of the autumn, September, is still a pleasant month in Columbus, Wisconsin, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 51.4°F (10.8°C).

Temperature

The advent of September brings a slight shift in average high-temperature, moving from a warm 77.2°F (25.1°C) in August to a pleasant 70.9°F (21.6°C). The low-temperature in Columbus, Wisconsin, averages to a fresh 51.4°F (10.8°C) during the nights of September.

Humidity

In September, the average relative humidity in Columbus is 81%.

Rainfall

In September, the rain falls for 10.8 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. Throughout the year, in Columbus, there are 123.1 rainfall days, and 17.01" (432mm) of precipitation is accumulated.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of September in Columbus, sunrise is at 6:20 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:38 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In Columbus, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 3 in September leads to these recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Columbus?

In September, in Columbus, the average high-temperature is 70.9°F (21.6°C), and the average low-temperature is 51.4°F (10.8°C).

What is the average humidity in September in Columbus?

In September, the average relative humidity in Columbus, Wisconsin, is 81%.

How many days does it rain in September in Columbus?

In Columbus, during September, the rain falls for 10.8 days and regularly aggregates up to 1.65" (42mm) of precipitation.

When it does not snow in Columbus?

June through September are months without snowfall in Columbus, Wisconsin.

Does it snow in Columbus in September?

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

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

The average day length in September in Columbus, Wisconsin, is 12h and 29min.

When are sunrise and sunset in September in Columbus?

In September, on the first day of the month, sunrise is at 6:20 am and sunset at 7:30 pm. On the last day of the month, in Columbus, Wisconsin, sunrise is at 6:53 am and sunset at 6:38 pm CDT.

How long on average sun shines in September in Columbus?

In September, the average sunshine duration in Columbus is 8.5h.

How high is the UV index in September in Columbus?

In Columbus, 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 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
Columbus, WI

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

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in September: 51.4°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 (10.9°F).

Average pressure in September
Columbus, WI

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

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

Average wind speed in September
Columbus, WI

Average wind speed in September - Columbus, WI
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in September
Columbus, WI

Average humidity in September - Columbus, WI
  • Average humidity in September: 81%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September
Columbus, WI

Average rainfall in September - Columbus, WI
  • Average rainfall in September: 1.65"

The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is December (0.63").

Average rainfall days in September
Columbus, WI

Average rainfall days in September - Columbus, WI
  • Average rainfall days in September: 10.8 days

The month with the highest number of rainy days is June (16.2 days).
The month with the least rainy days is February (3.6 days).

Average snowfall in September
Columbus, WI

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

The month with the highest snowfall is January (2.91").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Columbus, WI

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

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Columbus, 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 3min

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).

Average sunshine days in September
Columbus, WI

Average sunshine days in September - Columbus, WI
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (10.6 days).

Average UV index in September
Columbus, WI

Average UV index in September - Columbus, WI
  • 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, November and December (UV index 1).

Average cloud cover in September
Columbus, WI

Average cloud cover in September - Columbus, WI
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in September
Columbus, WI

Average visibility in September - Columbus, 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).

Columbus, Wisconsin, USA

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