September weather forecastCarrollton, IN

September

Weather in September

The first month of the autumn, September, is still a warm month in Carrollton, Indiana, with an average temperature varying between 57.6°F (14.2°C) and 75.6°F (24.2°C).

Temperature

The transition into September notes an average high-temperature of a still warm 75.6°F (24.2°C), revealing a mild distinction from the 80.2°F (26.8°C) in August. Carrollton registers a consistent average low-temperature of 57.6°F (14.2°C) during September.

Humidity

The average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 14.5 days. Throughout September, 2.13" (54mm) of precipitation is accumulated. Throughout the year, there are 170 rainfall days, and 32.13" (816mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Carrollton, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 7:12 am and sunset at 8:14 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:26 pm EDT.

Sunshine

In Carrollton, the average sunshine in September is 8.3h.

UV index

In Carrollton, Indiana, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 4 during September translates into the following guidance:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, the average high-temperature and low-temperature are 75.6°F (24.2°C) and 57.6°F (14.2°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 87.8°F (31°C).

In September, the average relative humidity is 78%.

In Carrollton, in September, during 14.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

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

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

The average day length in September is 12h and 26min.

In September, on the first day of the month, sunrise is at 7:12 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:26 pm EDT.

The average sunshine duration in September is 8.3h.

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Carrollton, IN

  • Average high temperature in September: 75.6°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in September: 57.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in September
Carrollton, IN

  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Carrollton, IN

  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in September
Carrollton, IN

  • Average humidity in September: 78%

The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Carrollton, IN

  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is February (1.93").

Average rainfall days in September
Carrollton, IN

  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (8.7 days).

Average snowfall in September
Carrollton, IN

  • Average snowfall in September: 0"

The month with the highest snowfall is December (3.27").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Carrollton, IN

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Carrollton, IN

  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 8h and 18min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in September
Carrollton, IN

  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (9.9 days).

Average UV index in September
Carrollton, IN

  • Average UV index in September: 4

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

Average cloud cover in September
Carrollton, IN

  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Carrollton, IN

  • Average visibility in September: 6mi

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