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 Sni Mills, the average high-temperature in September slightly decreases from a moderately hot 84.6°F (29.2°C) in August to a still warm 78.3°F (25.7°C). Throughout the nights in September, Sni Mills experiences an average low-temperature of 59.5°F (15.3°C).Humidity
The average relative humidity in September is 75%.Rainfall
In Sni Mills, in September, during 12.2 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, in Sni Mills, there are 134.9 rainfall days, and 28.46" (723mm) of precipitation is accumulated.Snowfall
In Sni Mills, snow does not fall in June through September.Daylight
In September, the average length of the day in Sni Mills is 12h and 26min.On the first day of the month, sunrise is at 6:46 am and sunset at 7:46 pm. On the last day of September, in Sni Mills, Missouri, sunrise is at 7:12 am and sunset at 7:00 pm CDT.
Sunshine
In Sni Mills, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index in Sni Mills is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Sni Mills in September?
What is the average humidity in September in Sni Mills?
How many days does it rain in September in Sni Mills?
When it does not snow in Sni Mills?
Does it snow in Sni Mills in September?
What is the average length of the day in September in Sni Mills?
What time are sunrise and sunset in September in Sni Mills?
How long on average sun shines in September in Sni Mills?
What is the UV index reading in September in Sni Mills?
Average temperature in September
Sni Mills, MO
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 59.5°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in September
Sni Mills, 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 (29.89"Hg).
Average wind speed in September
Sni Mills, MO
- Average wind speed in September: 7.1mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Sni Mills, MO
- Average humidity in September: 75%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Sni Mills, MO
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Sni Mills, MO
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in September
Sni Mills, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sni Mills, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sni Mills, 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 30min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Sni Mills, MO
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Sni Mills, 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
Sni Mills, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Sni Mills, 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).
Sni Mills, Missouri, USA
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