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
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a moderately hot 84.7°F (29.3°C) to a still warm 78.4°F (25.8°C). Calvin registers a significant reduction from the day's heat, with an average temperature drop to a mild 56.7°F (13.7°C) in September.Humidity
April, June through September and November, with an average relative humidity of 77%, are the least humid months.Rainfall
The month with the least rainfall is September, when the rain falls for 14 days and typically collects 2.2" (56mm) of precipitation.Snowfall
In Calvin, Kentucky, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:18 pm EDT.
Sunshine
In Calvin, the average sunshine in September is 8.4h.UV index
In Calvin, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Calvin have in September?
What is the UV index intensity in September?
Average temperature in September
Calvin, KY
- Average high temperature in September: 78.4°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 (41.5°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Calvin, KY
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Calvin, KY
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Calvin, KY
- Average humidity in September: 77%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are April, June, July, August, September and November (77%).
Average rainfall in September
Calvin, KY
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is February (4.69").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Calvin, KY
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is November (11.5 days).
Average snowfall in September
Calvin, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Calvin, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.5 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
Calvin, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Calvin, KY
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is February (9 days).
Average UV index in September
Calvin, 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
Calvin, KY
- Average cloud cover in September: 34
The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Calvin, KY
- Average visibility in September: 5mi
The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).
Calvin, Kentucky, USA
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