September weather forecastOlmstead, KY
September
Weather in September
The first month of the autumn, September, is still a warm month in Olmstead, Kentucky, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 61.3°F (16.3°C).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a hot 86°F (30°C) in August to a warm 80.4°F (26.9°C). Olmstead records a steady low-temperature average of 61.3°F (16.3°C) during September.Humidity
The average relative humidity in September is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.8 days and typically collects 0.75" (19mm) of precipitation.Snowfall
In Olmstead, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:32 pm CDT.
Sunshine
In September, the average sunshine in Olmstead is 8.8h.UV index
The average daily maximum UV index in September in Olmstead is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Olmstead, KY
- Average high temperature in September: 80.4°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in September
Olmstead, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Olmstead, KY
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is February (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Olmstead, KY
- Average humidity in September: 75%
The months with the highest relative humidity are March, May and December (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Olmstead, KY
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days in September
Olmstead, KY
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Olmstead, KY
- Average snowfall in September: 0"
The months with the highest snowfall are January, March and December (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Olmstead, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Olmstead, KY
- Average daylight in September: 12h and 24min
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 48min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Olmstead, KY
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Olmstead, 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
Olmstead, KY
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Olmstead, 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).
