Madison
Wisconsin, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Madison, WI

A view of the State Capitol building in Madison, Wisconsin, on a beautiful spring evening
A view of the State Capitol building in Madison, Wisconsin, on a beautiful spring evening
The first month of the autumn, September, is also an agreeable month in Madison, Wisconsin, with average temperature fluctuating between 71.8°F (22.1°C) and 50.2°F (10.1°C).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 79.3°F (26.3°C) in August, to a pleasant 71.8°F (22.1°C). The average low-temperature, in Madison, Wisconsin, is 50.2°F (10.1°C).

Humidity

The average relative humidity in Madison is 76.8%.

Rainfall

In Madison, during September, the rain falls for 9.3 days and regularly aggregates up to 3.1" (79.5mm) of precipitation. Throughout the year, there are 124.8 rainfall days, and 34.5" (875.9mm) of precipitation is accumulated.

Snowfall

In Madison snow does not fall in June through September.

Daylight

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

Sunshine

In Madison, the average sunshine is 7.1h.

UV index

The average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Madison?

The average high-temperature, in September, is 71.8°F (22.1°C), while the average low-temperature is 50.2°F (10.1°C).

What is the average humidity in September in Madison?

In September, the average relative humidity in Madison, Wisconsin, is 76.8%.

How much does it rain in Madison in September?

In Madison, during September, the rain falls for 9.3 days and regularly aggregates up to 3.1" (79.5mm) of precipitation.

Does it snow in Madison in September?

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

When it does not snow in Madison?

In Madison snow does not fall in June through September.

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

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

How many hours of sunshine does Madison have in September?

In September, the average sunshine in Madison is 7.1h.

What is the UV index reading in September in Madison?

In Madison, Wisconsin, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.
Average temperature in September - Madison, WI
  • Average high temperature in September: 71.8°F

The warmest month (with the highest average high temperature) is July (81.6°F).
The month with the lowest average high temperature is January (26.4°F).

  • Average low temperature in September: 50.2°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).

Average humidity in September - Madison, WI
  • Average humidity in September: 76.8%

The month with the highest relative humidity is December (78.5%).
The month with the lowest relative humidity is May (65.8%).

Average rainfall in September - Madison, WI
  • Average rainfall in September: 3.1"

The wettest month (with the highest rainfall) is June (4.5").
The driest month (with the lowest rainfall) is January (1.2").

Average rainfall days in September - Madison, WI
  • Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is April (12.1 days).
The month with the lowest number of rainy days is February (9.2 days).

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

The month with the highest snowfall is December (13.5").
Months with the lowest snowfall are June, July, August and September (0").

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

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

Average daylight in September / Average sunshine in September - Madison, WI
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 7.1h

Months with most sunshine are June and July (Average sunshine: 9.8h).
The month with least sunshine is December (Average sunshine: 3.5h).

Average UV index in September - Madison, WI
  • Average UV index in September: 6

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).