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
As August turns into September, the average high-temperatures rest at a still moderately hot 80.1°F (26.7°C), showing a minor variation from the prior month. During September, Diamond witnesses a consistent average low-temperature of 61.3°F (16.3°C).Humidity
The average relative humidity in September is 74%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.06" (27mm) of precipitation.Snowfall
In Diamond, snow does not fall in April through October.Daylight
In Diamond, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:46 am and sunset at 6:35 pm CDT.
Sunshine
The average sunshine in September in Diamond is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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?
What is the driest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Diamond have in September?
What is the UV index reading in September?
Average temperature in September
Diamond, KY
- Average high temperature in September: 80.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in September
Diamond, 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 (29.95"Hg).
Average wind speed in September
Diamond, KY
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Diamond, KY
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Diamond, KY
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is September (1.06").
Average rainfall days in September
Diamond, KY
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Diamond, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Diamond, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 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
Diamond, 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: 9h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Diamond, KY
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Diamond, KY
- 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
Diamond, KY
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Diamond, KY
- 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).
Diamond, Kentucky, USA
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