September weather forecast
Crawfordsville, IA

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Weather in September

The first month of the autumn, September, is still a warm month in Crawfordsville, Iowa, with an average temperature varying between 56.3°F (13.5°C) and 75.6°F (24.2°C).

Temperature

September witnesses a gentle descent in average high-temperature, descending from August's warm 81.1°F (27.3°C) to a still moderately hot 75.6°F (24.2°C). During the month of September, the temperature falls to an average of 56.3°F (13.5°C).

Humidity

The average relative humidity in September is 76%.

Rainfall

In September, the rain falls for 9.5 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. In Crawfordsville, during the entire year, the rain falls for 123.7 days and collects up to 18.94" (481mm) of precipitation.

Snowfall

In Crawfordsville, 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 September, sunrise is at 6:33 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:49 pm CDT.

Sunshine

In September, the average sunshine is 9.5h.

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 ordinary person.
Note: A maximum daily UV index of 4 during September morphs into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. When the Sun is at its strongest around midday, find shade and limit exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Frequently asked questions

What are the temperatures in September?

The high-temperature during September is 75.6°F (24.2°C) and the low-temperature is 56.3°F (13.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

How many days does it rain in September?

In Crawfordsville, in September, it is raining for 9.5 days, with typically 1.65" (42mm) of accumulated precipitation.

When it does not snow?

In Crawfordsville, snow does not fall in May through September.

Does it snow in September?

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

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:33 am and sunset at 7:38 pm. On the last day of the month, in Crawfordsville, sunrise is at 7:02 am and sunset at 6:49 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September in Crawfordsville is 9.5h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents 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
Crawfordsville, IA

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

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in September: 56.3°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 (16.5°F).

Average pressure in September
Crawfordsville, IA

Average pressure in September - Crawfordsville, 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).

Average wind speed in September
Crawfordsville, IA

Average wind speed in September - Crawfordsville, IA
  • Average wind speed in September: 7.9mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

Average humidity in September
Crawfordsville, IA

Average humidity in September - Crawfordsville, IA
  • Average humidity in September: 76%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Crawfordsville, IA

Average rainfall in September - Crawfordsville, IA
  • Average rainfall in September: 1.65"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in September
Crawfordsville, IA

Average rainfall days in September - Crawfordsville, IA
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in September
Crawfordsville, IA

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

The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Crawfordsville, IA

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

The month with the highest number of snowfall days is January (8.9 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
Crawfordsville, IA

Average daylight in September / Average sunshine in September - Crawfordsville, 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 18min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in September
Crawfordsville, IA

Average sunshine days in September - Crawfordsville, IA
  • Average sunshine days in September: 18.1 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in September
Crawfordsville, IA

Average UV index in September - Crawfordsville, 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
Crawfordsville, IA

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

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).

Average visibility in September
Crawfordsville, IA

Average visibility in September - Crawfordsville, 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).

Crawfordsville, Iowa, USA

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