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
Clarksville records a mild change in average high-temperature during September, easing from a moderately hot 85.6°F (29.8°C) in August to a still warm 79.3°F (26.3°C). During September, Clarksville witnesses a consistent average low-temperature of 60.1°F (15.6°C).Humidity
In September, the average relative humidity is 74%.Rainfall
January and September are months with the least rain when the rain falls for 12.4 days and typically aggregates up to 1.06" (27mm) of rain.Snowfall
In Clarksville, snow does not fall in May through October.Daylight
In September, the average length of the day in Clarksville, Indiana, is 12h and 25min.On the first day of the month, sunrise is at 7:13 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:38 am and sunset at 7:27 pm EDT.
Sunshine
In Clarksville, the average sunshine in September is 8.4h.UV index
In Clarksville, Indiana, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What is the average September temperature in Clarksville?
What is the average humidity in September in Clarksville?
What is the driest month in Clarksville?
How many days does it rain in September in Clarksville?
When it does not snow in Clarksville?
What is the average length of the day in September in Clarksville?
When is the sunrise / sunset in September in Clarksville?
How many hours of sunshine does Clarksville have in September?
What is the UV index reading in September in Clarksville?
Average temperature in September
Clarksville, IN
- Average high temperature in September: 79.3°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in September
Clarksville, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Clarksville, IN
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Clarksville, IN
- Average humidity in September: 74%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August and October (73%).
Average rainfall in September
Clarksville, IN
- Average rainfall in September: 1.06"
The wettest months (with the highest rainfall) are May and July (1.89").
The driest months (with the least rainfall) are January and September (1.06").
Average rainfall days in September
Clarksville, IN
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Clarksville, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Clarksville, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 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
Clarksville, 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 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 24min).
Average sunshine days in September
Clarksville, IN
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in September
Clarksville, 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, November and December (UV index 2).
Average cloud cover in September
Clarksville, IN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Clarksville, IN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and May (5mi).
Clarksville, Indiana, USA
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