September weather forecastWaco, MO
September
Weather in September
September, the first month of the autumn in Waco, is still a warm month, with an average temperature fluctuating between 79.9°F (26.6°C) and 61.2°F (16.2°C).Temperature
With the onset of September, the average high-temperature subtly recedes from August's hot 87.4°F (30.8°C) to a moderately hot 79.9°F (26.6°C). Throughout September, Waco registers a consistent average low-temperature of 61.2°F (16.2°C).Humidity
The average relative humidity in September in Waco, Missouri, is 74%.Rainfall
In Waco, Missouri, during September, the rain falls for 12 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Waco, during the entire year, the rain falls for 140.3 days and collects up to 30.12" (765mm) of precipitation.Snowfall
April, June through October are months without snowfall in Waco.Daylight
In September, the average length of the day in Waco is 12h and 25min.On the first day of September in Waco, sunrise is at 6:49 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:02 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
The average daily maximum UV index in September in Waco, Missouri, is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take precautions - Protection against skin and eye damage is obliged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Waco, MO
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Waco, MO
- Average pressure in September: 30.01"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
Waco, MO
- Average wind speed in September: 7.6mph
The windiest months (with the highest average wind speed) are March and April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Waco, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Waco, MO
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is May (5.12").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in September
Waco, MO
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Waco, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in September
Waco, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Waco, MO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in September
Waco, MO
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in September
Waco, MO
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Waco, MO
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June, July and August (Cloud cover 24).
Average visibility in September
Waco, 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).





