September weather forecastMount Sterling, MO
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Mount Sterling, Missouri, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 58.8°F (14.9°C).Temperature
Mount Sterling observes a small decrease in the average high-temperature with the arrival of September, falling from August's tropical 87.4°F (30.8°C) to a warm 80.2°F (26.8°C). Throughout the month of September, Mount Sterling witnesses an average temperature of 58.8°F (14.9°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Mount Sterling, in September, during 12.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, in Mount Sterling, there are 146.3 rainfall days, and 31.18" (792mm) of precipitation is accumulated.Snowfall
In Mount Sterling, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:36 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm CDT.
Sunshine
In Mount Sterling, the average sunshine in September is 9.4h.UV index
In Mount Sterling, 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 rays for the ordinary person.Note: In September, an average UV index of 5 transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mount Sterling, MO
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 58.8°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Mount Sterling, 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 (29.92"Hg).
Average wind speed in September
Mount Sterling, MO
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Mount Sterling, MO
- Average humidity in September: 74%
The months with the highest relative humidity are March and May (77%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Mount Sterling, MO
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in September
Mount Sterling, MO
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is December (7.4 days).
Average snowfall in September
Mount Sterling, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Mount Sterling, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 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
Mount Sterling, MO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in September
Mount Sterling, MO
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in September
Mount Sterling, MO
- 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, November and December (UV index 2).
Average cloud cover in September
Mount Sterling, MO
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 30).
Average visibility in September
Mount Sterling, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
