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
Richmond in September experiences a gentle temperature dip, with average high-temperatures reducing from a warm 84°F (28.9°C) in August to a still moderately hot 78.3°F (25.7°C). In the month of September, an average of 58.6°F (14.8°C) marks the low-temperature.Humidity
The months with the lowest humidity are August through November, with an average relative humidity of 76%.Rainfall
In Richmond, during September, the rain falls for 13.3 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 152.9 rainfall days, and 20.35" (517mm) of precipitation is accumulated.Snowfall
In Richmond, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 7:07 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What are the least humid months?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Richmond have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September in Richmond?
Average temperature in September
Richmond, KY
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Richmond, KY
- 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 (29.96"Hg).
Average wind speed in September
Richmond, KY
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Richmond, KY
- Average humidity in September: 76%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are August, September, October and November (76%).
Average rainfall in September
Richmond, KY
- Average rainfall in September: 1.42"
The wettest months (with the highest rainfall) are June and July (2.17").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Richmond, KY
- Average rainfall days in September: 13.3 days
The months with the highest number of rainy days are May and July (16.7 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in September
Richmond, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Richmond, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 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
Richmond, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Richmond, KY
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in September
Richmond, KY
- Average UV index in September: 4
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
Richmond, KY
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Richmond, KY
- Average visibility in September: 5mi
The months with the highest visibility are March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are January, February, May, July and September (5mi).
Richmond, Kentucky, USA
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