September weather forecastMcKinney, KY
September
Weather in September
September, the first month of the autumn in McKinney, is also a moderately hot month, with an average temperature fluctuating between 58.8°F (14.9°C) and 78.1°F (25.6°C).Temperature
During the shift to September, McKinney records a mild decrease in average high-temperature, moving from a moderately hot 84°F (28.9°C) in August to a still warm 78.1°F (25.6°C). An average low-temperature of 58.8°F (14.9°C) is expected during September.Humidity
The average relative humidity in September in McKinney is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 13.8 days and accumulates 2.52" (64mm) of precipitation.Snowfall
In McKinney, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:07 pm. On the last day of September, in McKinney, Kentucky, sunrise is at 7:34 am and sunset at 7:23 pm EDT.
Sunshine
The average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index in McKinney is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
McKinney, KY
- Average high temperature in September: 78.1°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 (39.7°F).
- Average low temperature in September: 58.8°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
McKinney, 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 (29.96"Hg).
Average wind speed in September
McKinney, KY
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
McKinney, KY
- Average humidity in September: 77%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August and October (76%).
Average rainfall in September
McKinney, KY
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is February (3.86").
The driest month (with the least rainfall) is September (2.52").
Average rainfall days in September
McKinney, KY
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (11.2 days).
Average snowfall in September
McKinney, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
McKinney, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.1 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
McKinney, KY
- Average daylight in September: 12h and 24min
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: 8h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
McKinney, KY
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in September
McKinney, 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
McKinney, KY
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
McKinney, KY
- Average visibility in September: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
