September weather forecast
Neenah, WI

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Weather in September

September marks the introduction of fall in Neenah. Temperature starts to retreat from its summer highs, and rainfall becomes an occasional occurrence. Daylight hours start reducing, indicating the sun's journey towards the equator. Taking full advantage of the weather, people often indulge in hiking, biking, and other outdoor activities. The city starts donning fall colors in a grand welcome to autumn.

Temperature

A mild drop in Neenah's average high-temperature is observed in September, transitioning from a moderately hot 77.4°F (25.2°C) in August to a pleasant 70.2°F (21.2°C). During September, Neenah consistently records a temperature low averaging a cool 52°F (11.1°C).

Humidity

The average relative humidity in September is 79%.

Rainfall

In Neenah, in September, it is raining for 12.1 days, with typically 1.81" (46mm) of accumulated precipitation. In Neenah, Wisconsin, during the entire year, the rain falls for 131.1 days and collects up to 24.45" (621mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 30min.
On the first day of the month, sunrise is at 6:17 am and sunset at 7:29 pm. On the last day of September, in Neenah, sunrise is at 6:51 am and sunset at 6:35 pm CDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 3 in September transforms into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The high-temperature, in September, in Neenah, records 70.2°F (21.2°C), while the low-temperature is 52°F (11.1°C).

What is the average humidity in September?

The average relative humidity in September is 79%.

How many days does it rain in September?

In September, the rain falls for 12.1 days. Throughout September, 1.81" (46mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

In Neenah, the average day length in September is 12h and 30min.

What time are sunrise and sunset in September in Neenah?

On the first day of September, sunrise is at 6:17 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:35 pm CDT.

How many hours of sunshine does Neenah have in September?

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

What is the UV index reading in September?

The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes 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
Neenah, WI

Average temperature in September - Neenah, WI
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (21.9°F).

  • Average low temperature in September: 52°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 (10.8°F).

Average pressure in September
Neenah, WI

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

The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Neenah, WI

Average wind speed in September - Neenah, WI
  • Average wind speed in September: 7.9mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in September
Neenah, WI

Average humidity in September - Neenah, WI
  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (75%).

Average rainfall in September
Neenah, WI

Average rainfall in September - Neenah, WI
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is February (1.06").

Average rainfall days in September
Neenah, WI

Average rainfall days in September - Neenah, WI
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (3.9 days).

Average snowfall in September
Neenah, WI

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

The month with the highest snowfall is January (5.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Neenah, WI

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

The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Neenah, WI
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in September
Neenah, WI

Average sunshine days in September - Neenah, WI
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is April (11.8 days).

Average UV index in September
Neenah, WI

Average UV index in September - Neenah, 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
Neenah, WI

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

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in September
Neenah, WI

Average visibility in September - Neenah, WI
  • Average visibility in September: 6mi

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

Neenah, Wisconsin, USA

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