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
With the beginning of September, the average high-temperature shows a small decrease, transitioning from 85.6°F (29.8°C) in August to a still warm 80.2°F (26.8°C). Rochester records an average temperature drop to a comfortable 61°F (16.1°C) in September.Humidity
In September, the average relative humidity is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.3 days and accumulates 1.54" (39mm) of precipitation.Snowfall
In Rochester, snow does not fall in May through September.Daylight
In Rochester, Kentucky, the average length of the day in September is 12h and 25min.On the first day of September in Rochester, sunrise is at 6:18 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:31 pm CDT.
Sunshine
In Rochester, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in Rochester in September?
When it does not snow in Rochester?
Does it snow in Rochester in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Rochester have in September?
How high is the UV index in September?
Average temperature in September
Rochester, KY
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in September
Rochester, 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
Rochester, KY
- Average wind speed in September: 5.6mph
The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in September
Rochester, KY
- Average humidity in September: 75%
The months with the highest relative humidity are February, March, May and December (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Rochester, KY
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in September
Rochester, KY
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in September
Rochester, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rochester, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.5 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
Rochester, KY
- Average daylight in September: 12h and 2min
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 42min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are June and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Rochester, KY
- Average sunshine days in September: 14.8 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Rochester, 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
Rochester, KY
- Average cloud cover in September: 30
The months with the most cloud cover are January and February (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in September
Rochester, 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).
Rochester, Kentucky, USA
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