September weather forecastLynn, KY
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Lynn, Kentucky, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 78.4°F (25.8°C).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's moderately hot 85.1°F (29.5°C) to a still warm 78.4°F (25.8°C). Lynn's nights during September are marked by a pronounced drop from daytime temperatures, experiencing an average low of 56.8°F (13.8°C).Humidity
In Lynn, the average relative humidity in September is 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.6 days and typically collects 1.89" (48mm) of precipitation.Snowfall
May through October are months without snowfall in Lynn.Daylight
In September, the average length of the day in Lynn is 12h and 25min.On the first day of the month, sunrise is at 7:01 am and sunset at 8:01 pm. On the last day of September, in Lynn, sunrise is at 7:27 am and sunset at 7:15 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In September, the average daily maximum UV index in Lynn is 4. 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: In September, the maximum UV index of 4 suggests these recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lynn, KY
- Average high temperature in September: 78.4°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Lynn, KY
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Lynn, KY
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Lynn, KY
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Lynn, KY
- Average rainfall in September: 1.89"
The wettest months (with the highest rainfall) are April and May (3.39").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Lynn, KY
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in September
Lynn, KY
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Lynn, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.6 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
Lynn, KY
- Average daylight in September: 12h and 24min
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 12min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Lynn, KY
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Lynn, 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
Lynn, KY
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Lynn, KY
- Average visibility in September: 5mi
The months with the highest visibility are March, April, June, October, November and December (6mi).
The months with the lowest visibility are January, February, May, July, August and September (5mi).
