September weather forecastClinton, MO
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Clinton, Missouri, with an average temperature ranging between min 59.9°F (15.5°C) and max 78.8°F (26°C).Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 85.6°F (29.8°C) in August to a still warm 78.8°F (26°C). During the nights in September, an average low-temperature of 59.9°F (15.5°C) is observed in Clinton.Humidity
The average relative humidity in September is 75%.Rainfall
In Clinton, Missouri, during September, the rain falls for 12 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, there are 131.1 rainfall days, and 21.65" (550mm) of precipitation is accumulated.Snowfall
April, June through September are months without snowfall in Clinton, Missouri.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:44 pm. On the last day of September, in Clinton, sunrise is at 7:10 am and sunset at 6:59 pm CDT.
Sunshine
In September, the average sunshine in Clinton, Missouri, is 9.4h.UV index
In September, the average daily maximum UV index in Clinton is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clinton, MO
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Clinton, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Clinton, MO
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Clinton, MO
- Average humidity in September: 75%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Clinton, MO
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Clinton, MO
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in September
Clinton, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in September
Clinton, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Clinton, MO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Clinton, MO
- Average sunshine days in September: 16.1 days
The months with the most sunshine days are January and December (22.1 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in September
Clinton, 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
Clinton, MO
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in September
Clinton, 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).
