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
September is marked by a subtle drop in average high-temperatures, transitioning from a warm 84.4°F (29.1°C) in August to a still moderately hot 78.8°F (26°C). De Witt's September nights cool down to an average low-temperature of 59.2°F (15.1°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In De Witt, in September, during 12.1 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. In De Witt, during the entire year, the rain falls for 140.8 days and collects up to 28.78" (731mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:42 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:56 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In De Witt, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 5 in September suggests the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in De Witt?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
De Witt, MO
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
De Witt, 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
De Witt, MO
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
De Witt, MO
- Average humidity in September: 74%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
De Witt, MO
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
De Witt, MO
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is December (6.2 days).
Average snowfall in September
De Witt, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
De Witt, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
De Witt, 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 3min
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: 4h and 48min).
Average sunshine days in September
De Witt, MO
- Average sunshine days in September: 16 days
The month with the most sunshine days is December (20.2 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
De Witt, 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
De Witt, MO
- Average cloud cover in September: 28
The months with the most cloud cover are January, February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
De Witt, 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).
De Witt, Missouri, USA
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