September weather forecast
Quasqueton, IA

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Weather in September

The first month of the autumn, September, is still a pleasant month in Quasqueton, Iowa, with an average temperature fluctuating between 54°F (12.2°C) and 72.5°F (22.5°C).

Temperature

The average high-temperature shows a slight dip in September, from August's warm 78.3°F (25.7°C) to a pleasant 72.5°F (22.5°C). Quasqueton reports an average nighttime low-temperature of 54°F (12.2°C) in September.

Humidity

In September, the average relative humidity in Quasqueton is 79%.

Rainfall

In Quasqueton, in September, it is raining for 11.8 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, in Quasqueton, there are 140.6 rainfall days, and 30" (762mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day in Quasqueton is 12h and 28min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:49 pm CDT.

Sunshine

In Quasqueton, the average sunshine in September is 9h.

UV index

In Quasqueton, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Quasqueton in September?

The high-temperature, in September, in Quasqueton, records 72.5°F (22.5°C), while the low-temperature is 54°F (12.2°C).

What is the average humidity in September in Quasqueton?

In Quasqueton, Iowa, the average relative humidity in September is 79%.

How much does it rain in Quasqueton in September?

In Quasqueton, Iowa, in September, it is raining for 11.8 days, with typically 2.72" (69mm) of accumulated precipitation.

When it does not snow in Quasqueton?

June through September are months without snowfall.

Does it snow in Quasqueton in September?

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

How many hours of daylight does Quasqueton have in September?

In Quasqueton, the average day length in September is 12h and 28min.

What time are sunrise and sunset in September in Quasqueton?

In September, on the first day of the month, sunrise is at 6:33 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:49 pm CDT.

How many hours of sunshine does Quasqueton have in September?

The average sunshine duration in September in Quasqueton is 9h.

What is the UV index intensity in September in Quasqueton?

In Quasqueton, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe 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
Quasqueton, IA

Average temperature in September - Quasqueton, IA
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in September: 54°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

Average pressure in September
Quasqueton, IA

Average pressure in September - Quasqueton, IA
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in September
Quasqueton, IA

Average wind speed in September - Quasqueton, IA
  • Average wind speed in September: 8.2mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in September
Quasqueton, IA

Average humidity in September - Quasqueton, IA
  • Average humidity in September: 79%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (73%).

Average rainfall in September
Quasqueton, IA

Average rainfall in September - Quasqueton, IA
  • Average rainfall in September: 2.72"

The wettest months (with the highest rainfall) are May and June (4.37").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in September
Quasqueton, IA

Average rainfall days in September - Quasqueton, IA
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (3.6 days).

Average snowfall in September
Quasqueton, IA

Average snowfall in September - Quasqueton, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.12").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Quasqueton, IA

Average snowfall days in September - Quasqueton, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Quasqueton, IA

Average daylight in September / Average sunshine in September - Quasqueton, IA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 9h and 0min

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 42min).

Average sunshine days in September
Quasqueton, IA

Average sunshine days in September - Quasqueton, IA
  • Average sunshine days in September: 15.4 days

The months with the most sunshine days are January, October and November (17.5 days).
The month with the least sunshine days is June (8.2 days).

Average UV index in September
Quasqueton, IA

Average UV index in September - Quasqueton, IA
  • Average UV index in September: 4

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 and December (UV index 1).

Average cloud cover in September
Quasqueton, IA

Average cloud cover in September - Quasqueton, IA
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).

Average visibility in September
Quasqueton, IA

Average visibility in September - Quasqueton, IA
  • Average visibility in September: 6mi

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

Quasqueton, Iowa, USA

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