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 arrival of September is marked by a minor reduction in average high-temperature, sliding from a moderately hot 84.2°F (29°C) in August to a still warm 77.9°F (25.5°C). The nighttime temperature in Hamilton dips to a refreshing 58.5°F (14.7°C) on average during September.Humidity
The average relative humidity in September is 75%.Rainfall
The month with the least rainfall in Hamilton is September, when the rain falls for 13.4 days and typically collects 1.73" (44mm) of precipitation.Snowfall
In Hamilton, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Hamilton, sunrise is at 7:08 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:22 pm EDT.
Sunshine
In Hamilton, Kentucky, the average sunshine in September is 8.2h.UV index
In Hamilton, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. To protect against the Sun's most potent rays, avoid direct exposure around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Hamilton?
What is the average humidity in September in Hamilton?
What is the driest month in Hamilton?
How many days does it rain in September in Hamilton?
When it does not snow in Hamilton?
What is the average length of the day in September in Hamilton?
What time are sunrise and sunset in September in Hamilton?
How many hours of sunshine does Hamilton have in September?
What is the UV index intensity in September in Hamilton?
Average temperature in September
Hamilton, KY
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in September
Hamilton, KY
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Hamilton, KY
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Hamilton, KY
- Average humidity in September: 75%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Hamilton, KY
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Hamilton, KY
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (9.7 days).
Average snowfall in September
Hamilton, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Hamilton, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.8 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
Hamilton, KY
- 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 30min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Hamilton, KY
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Hamilton, KY
- Average UV index in September: 5
The months with the highest UV index are 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
Hamilton, KY
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Hamilton, KY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Hamilton, Kentucky, USA
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