September weather forecast
Eagle Grove, IA

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Weather in September

September ushers in the start of fall in Eagle Grove with the temperatures beginning to cool down. The city witnesses a considerable decrease in sunlight hours along with a small increment in cloud cover. The slight nip in the air becomes more apparent towards the end of the month. The decrease in rainfall results in calmer weather with less humidity. Despite this, the moderate amount of sunshine ensures pleasant days, making it the perfect time to enjoy the gorgeous foliage that the season offers.

Temperature

At the onset of September, Eagle Grove records an average high-temperature of a still warm 74.1°F (23.4°C), showing little deviation from the preceding month. September brings Eagle Grove a consistent average low-temperature of 54.5°F (12.5°C).

Humidity

In September, the average relative humidity is 75%.

Rainfall

In Eagle Grove, in September, during 11.3 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Eagle Grove, during the entire year, the rain falls for 129.4 days and collects up to 25.04" (636mm) of precipitation.

Snowfall

In Eagle Grove, snow does not fall in June through September.

Daylight

In Eagle Grove, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:41 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:58 pm CDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In Eagle Grove, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In September, a regular UV index of 4 translates into these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

In Eagle Grove, in September, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 54.5°F (12.5°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 86°F (30°C).

What is the average humidity in September in Eagle Grove?

The average relative humidity in September is 75%.

How much does it rain in September?

In Eagle Grove, during September, the rain falls for 11.3 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow?

In Eagle Grove, snow does not fall in June through September.

Does it snow in September?

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

How many hours of daylight does Eagle Grove have in September?

In September, the average day length in Eagle Grove is 12h and 29min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:41 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:58 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.1h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Eagle Grove, IA

Average temperature in September - Eagle Grove, IA
  • Average high temperature in September: 74.1°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).

Average pressure in September
Eagle Grove, IA

Average pressure in September - Eagle Grove, IA
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Eagle Grove, IA

Average wind speed in September - Eagle Grove, IA
  • Average wind speed in September: 8.5mph

The windiest month (with the highest average wind speed) is April (11mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).

Average humidity in September
Eagle Grove, IA

Average humidity in September - Eagle Grove, IA
  • Average humidity in September: 75%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September
Eagle Grove, IA

Average rainfall in September - Eagle Grove, IA
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in September
Eagle Grove, IA

Average rainfall days in September - Eagle Grove, IA
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in September
Eagle Grove, IA

Average snowfall in September - Eagle Grove, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Eagle Grove, IA

Average snowfall days in September - Eagle Grove, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Eagle Grove, IA

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 9h and 1min

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 48min).

Average sunshine days in September
Eagle Grove, IA

Average sunshine days in September - Eagle Grove, IA
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).

Average UV index in September
Eagle Grove, IA

Average UV index in September - Eagle Grove, IA
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in September
Eagle Grove, IA

Average cloud cover in September - Eagle Grove, IA
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 31).

Average visibility in September
Eagle Grove, IA

Average visibility in September - Eagle Grove, 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).

Eagle Grove, Iowa, USA

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