September weather forecastClifton Hill, MO
September
Weather in September
September, the first month of the autumn in Clifton Hill, is also a moderately hot month, with an average temperature varying between 78.3°F (25.7°C) and 59°F (15°C).Temperature
The advent of September brings a slight shift in average high-temperature, moving from 83.8°F (28.8°C) in August to a still warm 78.3°F (25.7°C). Clifton Hill, in September, observes a steady average low-temperature of 59°F (15°C).Humidity
In Clifton Hill, the average relative humidity in September is 74%.Rainfall
In September, in Clifton Hill, the rain falls for 11.6 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 134.8 rainfall days, and 27.6" (701mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. September is the first month it typically snows in Clifton Hill. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 21.2 snowfall days, and 8.62" (219mm) of snow is accumulated.Daylight
In Clifton Hill, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine in Clifton Hill is 9.3h.UV index
In Clifton Hill, Missouri, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clifton Hill, MO
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in September: 59°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 (21.7°F).
Average pressure in September
Clifton Hill, 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
Clifton Hill, MO
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in September
Clifton Hill, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Clifton Hill, MO
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in September
Clifton Hill, MO
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in September
Clifton Hill, MO
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in September
Clifton Hill, MO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Clifton Hill, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Clifton Hill, MO
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is December (20.9 days).
The months with the least sunshine days are May and June (12.8 days).
Average UV index in September
Clifton Hill, 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
Clifton Hill, MO
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Clifton Hill, 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).
