September weather forecastGreenbriar, IN
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Greenbriar, Indiana, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 75.6°F (24.2°C).Temperature
September's arrival brings an average high-temperature of a still moderately hot 75.6°F (24.2°C), demonstrating subtle variation from the preceding month. In Greenbriar, the September nights cool down to an average low of 57.9°F (14.4°C).Humidity
The average relative humidity in September is 77%.Rainfall
In Greenbriar, in September, during 14 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 158.4 rainfall days, and 28.23" (717mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Greenbriar, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:13 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 7:28 pm EDT.
Sunshine
In Greenbriar, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 5 during September leads to these advisories:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greenbriar, IN
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 57.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in September
Greenbriar, 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
Greenbriar, IN
- Average wind speed in September: 6.6mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Greenbriar, IN
- Average humidity in September: 77%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Greenbriar, IN
- Average rainfall in September: 1.93"
The wettest months (with the highest rainfall) are April and May (3.43").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in September
Greenbriar, IN
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in September
Greenbriar, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Greenbriar, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenbriar, IN
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Greenbriar, IN
- Average sunshine days in September: 14 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in September
Greenbriar, IN
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Greenbriar, IN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Greenbriar, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
