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
September reveals a small adjustment in temperature, transitioning from an average high of a warm 79.3°F (26.3°C) in August to a still moderately hot 73.8°F (23.2°C). Roanoke, in September, experiences an average temperature of 55.8°F (13.2°C) at night.Humidity
In September, the average relative humidity is 79%.Rainfall
In Roanoke, in September, during 10.8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, there are 125.6 rainfall days, and 12.8" (325mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 7:09 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:24 pm EDT.
Sunshine
In Roanoke, the average sunshine in September is 8h.UV index
The average daily maximum UV index in September in Roanoke is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Make use of precautions - It is urged to ward off sun damage. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September in Roanoke?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Roanoke have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Roanoke have in September?
What is the UV index reading in September?
Average temperature in September
Roanoke, IN
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in September
Roanoke, IN
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Roanoke, IN
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
Roanoke, IN
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Roanoke, IN
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is May (1.65").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in September
Roanoke, IN
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Roanoke, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Roanoke, 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
Roanoke, IN
- Average daylight in September: 12h and 3min
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 0min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Roanoke, IN
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
Roanoke, IN
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Roanoke, IN
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Roanoke, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Roanoke, Indiana, USA
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