September weather forecastShelbyville, MO
September
Weather in September
September, the first month of the autumn in Shelbyville, is still a warm month, with temperature in the range of an average low of 58.1°F (14.5°C) and an average high of 77.7°F (25.4°C).Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a warm 83.3°F (28.5°C) in August to a still moderately hot 77.7°F (25.4°C). An average low-temperature of 58.1°F (14.5°C) is recorded during the nights in September.Humidity
In September, the average relative humidity is 75%.Rainfall
In Shelbyville, in September, during 11 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, there are 133.9 rainfall days, and 26.69" (678mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day in Shelbyville is 12h and 26min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:38 pm. On the last day of September, in Shelbyville, sunrise is at 7:04 am and sunset at 6:51 pm CDT.
Sunshine
In Shelbyville, the average sunshine in September is 9.4h.UV index
In Shelbyville, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shelbyville, MO
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Shelbyville, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Shelbyville, MO
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Shelbyville, MO
- Average humidity in September: 75%
The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Shelbyville, MO
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Shelbyville, MO
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in September
Shelbyville, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Shelbyville, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.7 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
Shelbyville, MO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Shelbyville, MO
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Shelbyville, MO
- Average UV index in September: 5
The months with the highest UV index are 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
Shelbyville, MO
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Shelbyville, MO
- 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).
