September weather forecastClarence, MO
September
Weather in September
The first month of the autumn, September, is still a warm month in Clarence, Missouri, with an average temperature fluctuating between 77.4°F (25.2°C) and 57.7°F (14.3°C).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's moderately hot 83.1°F (28.4°C) to a still warm 77.4°F (25.2°C). During September, Clarence consistently records a temperature low averaging a moderate 57.7°F (14.3°C).Humidity
In September, the average relative humidity is 75%.Rainfall
In Clarence, Missouri, during September, the rain falls for 11.5 days and regularly aggregates up to 2.56" (65mm) of precipitation. 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.Daylight
In Clarence, 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 is 9.3h.UV index
In Clarence, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 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 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).
