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 sees a slight reduction in average high-temperature, with a shift from 85.5°F (29.7°C) in August to a still warm 79.3°F (26.3°C). Fairfield, in September, observes a steady average low-temperature of 59.7°F (15.4°C).Humidity
The average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.5 days and accumulates 2.09" (53mm) of precipitation.Snowfall
May through October are months without snowfall in Fairfield, Kentucky.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 7:12 am and sunset at 8:10 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:25 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Fairfield, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Fairfield in September?
What is the average humidity in September in Fairfield?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Fairfield have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Fairfield have in September?
What is the UV index reading in September?
Average temperature in September
Fairfield, KY
- Average high temperature in September: 79.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in September
Fairfield, 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
Fairfield, KY
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
Fairfield, KY
- Average humidity in September: 75%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Fairfield, KY
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Fairfield, KY
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in September
Fairfield, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Fairfield, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 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
Fairfield, 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 36min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 24min).
Average sunshine days in September
Fairfield, KY
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in September
Fairfield, 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
Fairfield, KY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Fairfield, KY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and May (5mi).
Fairfield, Kentucky, USA
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