September weather forecast
Ballyclough, IA

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Weather in September

September, the first month of the autumn in Ballyclough, is still a pleasant month, with an average temperature varying between 53.1°F (11.7°C) and 72.5°F (22.5°C).

Temperature

In the transition to September, Ballyclough observes a minor drop in the average high-temperature, shifting from a warm 78.4°F (25.8°C) in August to a pleasant 72.5°F (22.5°C). Ballyclough's average low-temperature for the month of September records at a cool 53.1°F (11.7°C).

Humidity

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

Rainfall

In September, the rain falls for 11.7 days. Throughout September, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 140.9 rainfall days, and 28.11" (714mm) of precipitation is accumulated.

Snowfall

In Ballyclough, snow does not fall in May 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 6:28 am and sunset at 7:36 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:45 pm CDT.

Sunshine

In Ballyclough, the average sunshine in September is 9.1h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 4 transforms into these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Jun 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

An average high-temperature, in September, in Ballyclough, is 72.5°F (22.5°C) and the average low-temperature is 53.1°F (11.7°C).

What is the average humidity in September?

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

How much does it rain in September?

In Ballyclough, during September, the rain falls for 11.7 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:28 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:45 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.1h.

What is the UV index intensity in September?

In September, the average daily maximum UV index in Ballyclough is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's 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
Ballyclough, IA

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

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (24.6°F).

  • Average low temperature in September: 53.1°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 (12.4°F).

Average pressure in September
Ballyclough, IA

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in September
Ballyclough, IA

Average wind speed in September - Ballyclough, IA
  • Average wind speed in September: 7.8mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in September
Ballyclough, IA

Average humidity in September - Ballyclough, 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 (75%).

Average rainfall in September
Ballyclough, IA

Average rainfall in September - Ballyclough, IA
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.18").

Average rainfall days in September
Ballyclough, IA

Average rainfall days in September - Ballyclough, IA
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (4.6 days).

Average snowfall in September
Ballyclough, IA

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

The month with the highest snowfall is January (5.08").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Ballyclough, IA

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

The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Ballyclough, 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 1min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in September
Ballyclough, IA

Average sunshine days in September - Ballyclough, IA
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in September
Ballyclough, IA

Average UV index in September - Ballyclough, 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
Ballyclough, IA

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

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in September
Ballyclough, IA

Average visibility in September - Ballyclough, 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).

Ballyclough, Iowa, USA

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