September weather forecastRensselaer, IN
September
Weather in September
September, the first month of the autumn in Rensselaer, is still a warm month, with an average temperature varying between 74.8°F (23.8°C) and 56.8°F (13.8°C).Temperature
With the advent of September, Rensselaer experiences an average high-temperature of a still warm 74.8°F (23.8°C), mirroring a close resemblance to the previous month. The mean low-temperature during September nights is a moderate 56.8°F (13.8°C).Humidity
The average relative humidity in September is 78%.Rainfall
In September, in Rensselaer, the rain falls for 11.6 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. In Rensselaer, during the entire year, the rain falls for 151.2 days and collects up to 22.64" (575mm) of precipitation.Snowfall
In Rensselaer, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:20 pm. On the last day of September, in Rensselaer, sunrise is at 6:44 am and sunset at 6:31 pm CDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
The average daily maximum UV index in September in Rensselaer is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Preventing sun damage is advised. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rensselaer, IN
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Rensselaer, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Rensselaer, IN
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
Rensselaer, IN
- Average humidity in September: 78%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Rensselaer, IN
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Rensselaer, IN
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Rensselaer, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.23").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Rensselaer, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rensselaer, 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 18min).
- Average sunshine in September: 8h and 18min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Rensselaer, IN
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in September
Rensselaer, IN
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Rensselaer, IN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 35).
Average visibility in September
Rensselaer, IN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
