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's arrival signals a moderate reduction in the average high-temperature, easing from a moderately hot 84.2°F (29°C) in August to a still warm 78.3°F (25.7°C). Madison experiences an average nighttime temperature of 58.6°F (14.8°C) in the month of September.Humidity
The average relative humidity in September is 74%.Rainfall
In Madison, in September, it is raining for 10.1 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 117.9 rainfall days, and 16.3" (414mm) of precipitation is accumulated.Snowfall
In Madison, snow does not fall in May through September.Daylight
In Madison, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:52 pm CDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Take precautions - Protection against sunburn is recommended. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September in Madison?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Madison?
What is the UV index intensity in September?
Average temperature in September
Madison, 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: 58.6°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Madison, 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
Madison, MO
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Madison, MO
- Average humidity in September: 74%
The months with the highest relative humidity are May, June and July (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Madison, MO
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Madison, MO
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in September
Madison, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Madison, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Madison, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Madison, MO
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is May (13.3 days).
Average UV index in September
Madison, 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
Madison, MO
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Madison, 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).
Madison, Missouri, USA
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