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
The start of September involves a subtle temperature drop, shifting from a hot 87.4°F (30.8°C) in August to a moderately hot 80.6°F (27°C). Steelville anticipates a stark contrast in temperature during September nights, with an average low of 59°F (15°C).Heat index
The heat index value for September is appraised at 84.2°F (29°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
In Steelville, the average relative humidity in September is 74%.Rainfall
In Steelville, in September, it is raining for 12.1 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 145.9 rainfall days, and 30.31" (770mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Steelville, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 5 in September transforms into this advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Steelville have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Steelville have in September?
How high is the UV index in September?
Average temperature in September
Steelville, MO
- Average high temperature in September: 80.6°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 (39.4°F).
- Average low temperature in September: 59°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in September
Steelville, 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
Steelville, MO
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Steelville, MO
- Average humidity in September: 74%
The months with the highest relative humidity are March, May and December (77%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Steelville, MO
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in September
Steelville, MO
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in September
Steelville, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Steelville, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are April, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Steelville, MO
- Average daylight in September: 12h and 2min
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 36min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in September
Steelville, MO
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.6 days).
Average UV index in September
Steelville, 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 and December (UV index 2).
Average cloud cover in September
Steelville, MO
- Average cloud cover in September: 33
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Steelville, MO
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Steelville, Missouri, USA
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