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
Shelbyville records a mild change in average high-temperature during September, easing from a warm 78.1°F (25.6°C) in August to an agreeable 72.5°F (22.5°C). During September, Shelbyville experiences an average low-temperature of 53.8°F (12.1°C) at night.Humidity
In Shelbyville, the average relative humidity in September is 78%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. Throughout the year, in Shelbyville, there are 137.6 rainfall days, and 19.41" (493mm) of precipitation is accumulated.Snowfall
In Shelbyville, snow does not fall in June through September.Daylight
In Shelbyville, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 7:08 am and sunset at 8:16 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:25 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Enhance your sun protection with tightly woven, yet airy clothing.
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?
How many days does it rain in September in Shelbyville?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Shelbyville?
What is the UV index reading in September?
Average temperature in September
Shelbyville, MI
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Shelbyville, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Shelbyville, MI
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January, February and April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Shelbyville, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Shelbyville, MI
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is October (2.36").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in September
Shelbyville, MI
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is October (15 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Shelbyville, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Shelbyville, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Shelbyville, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Shelbyville, MI
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is February (9 days).
Average UV index in September
Shelbyville, MI
- Average UV index in September: 4
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Shelbyville, MI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Shelbyville, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Shelbyville, Michigan, USA
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