September weather forecastIndiana Dunes National Lakeshore, IN
September
Weather in September
September marks the beginning of a seasonal shift from summer to autumn. The weather grows milder, temperatures lower, and daylight hours gradually descend to 12.5 hours. The high temperature in the Dunes drops noticeably to 73.8°F (23.2°C), which is lower as compared to August. The weather in September invites park visitors to appreciate the splendor of Fall in full swing. October witnesses a continuation of the autumnal charm along with cooler temperatures.Temperature
In the transition to September, Indiana Dunes National Lakeshore observes a minor drop in the average high-temperature, shifting from a warm 79.9°F (26.6°C) in August to a still moderately hot 73.8°F (23.2°C). An average nighttime temperature of 55.6°F (13.1°C) is recorded during September.Snowfall
May through October are months without snowfall in Indiana Dunes National Lakeshore, Indiana.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:14 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:31 pm CDT.
Updated: Jan 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In September, in Indiana Dunes National Lakeshore, the average high-temperature is 73.8°F (23.2°C), and the average low-temperature is 55.6°F (13.1°C).
In Indiana Dunes National Lakeshore, snow does not fall in May through October.
The average day length in September in Indiana Dunes National Lakeshore is 12h and 28min.
On the first day of September, sunrise is at 6:14 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:31 pm CDT.
Average temperature in September
Indiana Dunes National Lakeshore, IN
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average snowfall in September
Indiana Dunes National Lakeshore, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (15.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average daylight in September
Indiana Dunes National Lakeshore, IN
- Average daylight in September: 12h and 30min
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 12min).
