Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift into September records an average high-temperature of a still warm 79.7°F (26.5°C), subtly varied from August's 84.6°F (29.2°C). During September, Greenbrier experiences an average low-temperature of 60.4°F (15.8°C) at night.Humidity
In Greenbrier, the average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.5 days and typically collects 1.93" (49mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Greenbrier is 12h and 25min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:33 pm CDT.
Sunshine
The average sunshine in September in Greenbrier is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 5 in September translates into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Greenbrier in September?
What is the average humidity in September in Greenbrier?
What is the driest month in Greenbrier?
How much does it rain in Greenbrier in September?
When it does not snow in Greenbrier?
How many hours of daylight does Greenbrier have in September?
What time are sunrise and sunset in September in Greenbrier?
How long on average sun shines in September in Greenbrier?
What is the UV index reading in September in Greenbrier?
Average temperature in September
Greenbrier, IN
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in September
Greenbrier, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Greenbrier, IN
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is February (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in September
Greenbrier, IN
- Average humidity in September: 73%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Greenbrier, IN
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is April (5.31").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Greenbrier, IN
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is January (9.9 days).
Average snowfall in September
Greenbrier, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Greenbrier, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.5 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
Greenbrier, IN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 24min).
Average sunshine days in September
Greenbrier, IN
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is July (8.9 days).
Average UV index in September
Greenbrier, IN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Greenbrier, IN
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Greenbrier, 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).
Greenbrier, Indiana, USA
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