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
A mild shift in the average high-temperature occurs in September, reducing from a warm 83.1°F (28.4°C) in August to a still moderately hot 77.4°F (25.2°C). Clarence records an average nighttime low-temperature of 57.7°F (14.3°C) throughout September.Humidity
In September, the average relative humidity is 75%.Rainfall
In September, in Clarence, Missouri, the rain falls for 11.5 days. Throughout September, 2.56" (65mm) of precipitation is accumulated. In Clarence, during the entire year, the rain falls for 136.5 days and collects up to 27.36" (695mm) of precipitation.Snowfall
May through September are months without snowfall in Clarence.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:37 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September in Clarence, Missouri, is 9.3h.UV index
In Clarence, Missouri, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. To avoid the Sun's strongest rays, limit exposure around the mid-day period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are September temperatures in Clarence?
What is the average humidity in September in Clarence?
How many days does it rain in September in Clarence?
When it does not snow in Clarence?
Does it snow in Clarence in September?
What is the average length of the day in September in Clarence?
When are sunrise and sunset in September in Clarence?
How long on average sun shines in September in Clarence?
What is the UV index intensity in September in Clarence?
Average temperature in September
Clarence, MO
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Clarence, 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 (29.9"Hg).
Average wind speed in September
Clarence, MO
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Clarence, MO
- Average humidity in September: 75%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Clarence, MO
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
Clarence, MO
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in September
Clarence, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Clarence, MO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Clarence, 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 2min
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 24min).
Average sunshine days in September
Clarence, MO
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is December (19.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in September
Clarence, 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
Clarence, MO
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Clarence, 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).
Clarence, Missouri, USA
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