September weather forecast
North Liberty, IA

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Weather in September

September in North Liberty marks the onset of Autumn, introducing a refreshing change in the city's landscape. The average temperature drops to 74.8°F (23.8°C), painting a picture of pleasant days and crisp evenings. The outdoor enthusiasts can capture the changing color palette from green to shades of orange, brown, and red. The weather remains dry enough to enjoy the Fall foliage. As the leaves fall, the city transforms into an artist's canvas splashed with earthy hues.

Temperature

The commencement of September indicates a gentle shift in the average high-temperature, receding from August's warm 80.2°F (26.8°C) to a still moderately hot 74.8°F (23.8°C). In North Liberty, September nights cool down to an average of 55.4°F (13°C).

Humidity

In September, the average relative humidity in North Liberty is 77%.

Rainfall

In September, in North Liberty, the rain falls for 11.5 days. Throughout September, 2.52" (64mm) of precipitation is accumulated. In North Liberty, during the entire year, the rain falls for 134.7 days and collects up to 27.72" (704mm) of precipitation.

Snowfall

May through September are months without snowfall in North Liberty.

Daylight

In September, the average length of the day in North Liberty is 12h and 28min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:49 pm CDT.

Sunshine

In North Liberty, the average sunshine in September is 9.3h.

UV index

In North Liberty, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 4 during September translates into the following directions:
Guard yourself - Avoiding sunburn is suggested. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What are September temperatures in North Liberty?

In September, in North Liberty, the average high-temperature is 74.8°F (23.8°C), and the average low-temperature is 55.4°F (13°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 87.8°F (31°C).

What is the average humidity in September in North Liberty?

In September, the average relative humidity in North Liberty is 77%.

How many days does it rain in September in North Liberty?

In North Liberty, in September, it is raining for 11.5 days, with typically 2.52" (64mm) of accumulated precipitation.

When it does not snow in North Liberty?

In North Liberty, snow does not fall in May through September.

Does it snow in North Liberty in September?

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

What is the average length of the day in September in North Liberty?

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

When is the sunrise / sunset in September in North Liberty?

In September, on the first day of the month, sunrise is at 6:33 am and sunset at 7:39 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 North Liberty have in September?

The average sunshine duration in September is 9.3h.

What is the UV index reading in September in North Liberty?

In September, the average daily maximum UV index in North Liberty, Iowa, is 4. A UV Index estimate of 3 to 5 represents a moderate health threat 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
North Liberty, IA

Average temperature in September - North Liberty, IA
  • Average high temperature in September: 74.8°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.1°F).

  • Average low temperature in September: 55.4°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

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Average pressure in September
North Liberty, IA

Average pressure in September - North Liberty, 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 (29.9"Hg).

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Average wind speed in September
North Liberty, IA

Average wind speed in September - North Liberty, IA
  • Average wind speed in September: 8mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

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Average humidity in September
North Liberty, IA

Average humidity in September - North Liberty, IA
  • Average humidity in September: 77%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
North Liberty, IA

Average rainfall in September - North Liberty, IA
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.14").

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Average rainfall days in September
North Liberty, IA

Average rainfall days in September - North Liberty, IA
  • Average rainfall days in September: 11.5 days

The months with the highest number of rainy days are May and June (17 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall in September
North Liberty, IA

Average snowfall in September - North Liberty, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
North Liberty, IA

Average snowfall days in September - North Liberty, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.1 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
North Liberty, IA

Average daylight in September / Average sunshine in September - North Liberty, 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 12min).

  • Average sunshine in September: 9h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in September
North Liberty, IA

Average sunshine days in September - North Liberty, IA
  • Average sunshine days in September: 17 days

The months with the most sunshine days are October, November and December (18.1 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in September
North Liberty, IA

Average UV index in September - North Liberty, 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).

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Average cloud cover in September
North Liberty, IA

Average cloud cover in September - North Liberty, IA
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in September
North Liberty, IA

Average visibility in September - North Liberty, IA
  • Average visibility in September: 6mi

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

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North Liberty, Iowa, USA

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