September weather forecast
Center Grove, IA

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Weather in September

September, the first month of the autumn in Center Grove, is also an agreeable month, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 53.2°F (11.8°C).

Temperature

Center Grove's September weather features a light decline in high-temperatures, reducing from a warm 78.6°F (25.9°C) in August to an agreeable 72.5°F (22.5°C). Throughout the nights in September, an average low-temperature of 53.2°F (11.8°C) is noted in Center Grove, Iowa.

Humidity

In September, the average relative humidity in Center Grove is 80%.

Rainfall

In Center Grove, Iowa, in September, it is raining for 11.4 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, in Center Grove, there are 135.3 rainfall days, and 27.4" (696mm) of precipitation is accumulated.

Snowfall

In Center Grove, Iowa, snow does not fall in May through September.

Daylight

In September, the average length of the day in Center Grove 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 September, the average sunshine in Center Grove is 8.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: During September, 4 as the daily maximum UV index converts into the following advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the temperature in September in Center Grove?

The high-temperature during September is 72.5°F (22.5°C) and the low-temperature is 53.2°F (11.8°C).

What is the average humidity in September in Center Grove?

In September, the average relative humidity in Center Grove is 80%.

How many days does it rain in September in Center Grove?

In September, in Center Grove, Iowa, the rain falls for 11.4 days. Throughout September, 2.6" (66mm) of precipitation is accumulated.

When it does not snow in Center Grove?

In Center Grove, snow does not fall in May through September.

Does it snow in Center Grove in September?

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

What is the average length of the day in September in Center Grove?

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

When are sunrise and sunset in September in Center Grove?

On the first day of September in Center Grove, Iowa, 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 many hours of sunshine does Center Grove have in September?

In September, the average sunshine duration in Center Grove is 8.9h.

How high is the UV index in September in Center Grove?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health risk from 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
Center Grove, IA

Average temperature in September - Center Grove, 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 (25°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in September
Center Grove, IA

Average pressure in September - Center Grove, 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).

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Average wind speed in September
Center Grove, IA

Average wind speed in September - Center Grove, 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).

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Average humidity in September
Center Grove, IA

Average humidity in September - Center Grove, IA
  • Average humidity in September: 80%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in September
Center Grove, IA

Average rainfall in September - Center Grove, IA
  • Average rainfall in September: 2.6"

The wettest months (with the highest rainfall) are May and June (3.7").
The driest months (with the least rainfall) are January and February (1.14").

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Average rainfall days in September
Center Grove, IA

Average rainfall days in September - Center Grove, IA
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in September
Center Grove, IA

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

The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Center Grove, IA

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

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Center Grove, 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: 8h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in September
Center Grove, IA

Average sunshine days in September - Center Grove, IA
  • Average sunshine days in September: 17.2 days

The months with the most sunshine days are November and December (17.5 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in September
Center Grove, IA

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

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

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Average cloud cover in September
Center Grove, IA

Average cloud cover in September - Center Grove, IA
  • Average cloud cover in September: 33

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

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Average visibility in September
Center Grove, IA

Average visibility in September - Center 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).

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Center Grove, Iowa, USA

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