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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 83.5°F (28.6°C) in August to a still moderately hot 77.5°F (25.3°C). Nighttime temperature in Stewartsville lowers to an average of 58.3°F (14.6°C) in September.Humidity
The average relative humidity in September is 76%.Rainfall
In Stewartsville, Missouri, during September, the rain falls for 12.4 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Stewartsville, during the entire year, the rain falls for 133.9 days and collects up to 27.8" (706mm) of precipitation.Snowfall
In Stewartsville, Missouri, snow does not fall in June through September.Daylight
In Stewartsville, the average length of the day in September is 12h and 26min.On the first day of September in Stewartsville, sunrise is at 6:46 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:01 pm CDT.
Sunshine
The average sunshine in September in Stewartsville is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Stewartsville?
What is the average humidity in September in Stewartsville?
How many days does it rain in September in Stewartsville?
When it does not snow in Stewartsville?
Does it snow in Stewartsville in September?
How many hours of daylight does Stewartsville have in September?
When is the sunrise / sunset in September in Stewartsville?
How long on average sun shines in September in Stewartsville?
How high is the UV index in September in Stewartsville?
Average temperature in September
Stewartsville, MO
- Average high temperature in September: 77.5°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 58.3°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 (20.8°F).
Average pressure in September
Stewartsville, MO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Stewartsville, MO
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Stewartsville, MO
- Average humidity in September: 76%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in September
Stewartsville, MO
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (3.86").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Stewartsville, MO
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (4.7 days).
Average snowfall in September
Stewartsville, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stewartsville, MO
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stewartsville, MO
- Average daylight in September: 12h and 2min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Stewartsville, MO
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Stewartsville, 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
Stewartsville, MO
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Stewartsville, 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).
Stewartsville, Missouri, USA
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