September weather forecast
Avoca, IA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Avoca, Iowa, with an average temperature ranging between min 55.9°F (13.3°C) and max 75.6°F (24.2°C).

Temperature

As August makes way for September, Avoca's average high-temperature eases from 81.1°F (27.3°C) to a still moderately hot 75.6°F (24.2°C). Avoca, during the month of September, experiences an average low-temperature of 55.9°F (13.3°C).

Humidity

In September, the average relative humidity is 74%.

Rainfall

In September, the rain falls for 11.8 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. In Avoca, during the entire year, the rain falls for 127.7 days and collects up to 26.57" (675mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:48 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:04 pm CDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In September, the average daily maximum UV index in Avoca is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 4 during September leads to these instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Avoca?

During September, Avoca experiences an average high-temperature of 75.6°F (24.2°C) and a low-temperature of 55.9°F (13.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 86°F (30°C).

What is the average humidity in September in Avoca?

In Avoca, Iowa, the average relative humidity in September is 74%.

How much does it rain in Avoca in September?

In Avoca, in September, it is raining for 11.8 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow in Avoca?

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

Does it snow in Avoca in September?

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

How many hours of daylight does Avoca have in September?

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

What time are sunrise and sunset in September in Avoca?

On the first day of September in Avoca, sunrise is at 6:48 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:04 pm CDT.

How long on average sun shines in September in Avoca?

In Avoca, the average sunshine duration in September is 9.1h.

What is the UV index intensity in September in Avoca?

The average daily maximum UV index in September in Avoca is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Avoca, IA

Average temperature in September - Avoca, IA
  • Average high temperature in September: 75.6°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in September: 55.9°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

Average pressure in September
Avoca, IA

Average pressure in September - Avoca, IA
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Avoca, IA

Average wind speed in September - Avoca, IA
  • Average wind speed in September: 8.4mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).

Average humidity in September
Avoca, IA

Average humidity in September - Avoca, IA
  • Average humidity in September: 74%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (68%).

Average rainfall in September
Avoca, IA

Average rainfall in September - Avoca, IA
  • Average rainfall in September: 2.28"

The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days in September
Avoca, IA

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

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (3.6 days).

Average snowfall in September
Avoca, IA

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

The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Avoca, IA

Average snowfall days in September - Avoca, IA
  • 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 June, July, August and September (0 days).

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

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

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

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in September
Avoca, IA

Average sunshine days in September - Avoca, IA
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11 days).

Average UV index in September
Avoca, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in September
Avoca, IA

Average cloud cover in September - Avoca, IA
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in September
Avoca, IA

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

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

Avoca, Iowa, USA

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