September weather forecastCassville, MO
September
Weather in September
Cassville starts descending towards cooler weather in September. The decrease in temperatures signals the ending days of summer, and the beginning of fall. The daylight hours start shrinking, and nights grow longer. September also brings less rainfall than the previous month with 2.24" (57mm). Despite the changing seasons, most of September remains comfortably warm.Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a hot 87.8°F (31°C) in August to a warm 81°F (27.2°C). September in Cassville, Missouri, generally records an average low-temperature of 60.3°F (15.7°C).Heat index
For most parts of September, the heat index is estimated at 84.2°F (29°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Note that heat index values are valued for light wind and location in the shade. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
In Cassville, the average relative humidity in September is 73%.Rainfall
In Cassville, during September, the rain falls for 13.2 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, in Cassville, Missouri, there are 149.2 rainfall days, and 33.43" (849mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In Cassville, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:43 pm. On the last day of September, in Cassville, sunrise is at 7:10 am and sunset at 6:59 pm CDT.
Sunshine
The average sunshine in September in Cassville, Missouri, is 9.5h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cassville, MO
- Average high temperature in September: 81°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 (43.5°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in September
Cassville, 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 (29.93"Hg).
Average wind speed in September
Cassville, MO
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Cassville, MO
- Average humidity in September: 73%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are July, August and October (72%).
Average rainfall in September
Cassville, MO
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is May (4.69").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
Cassville, MO
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is December (7.2 days).
Average snowfall in September
Cassville, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Cassville, 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
Cassville, MO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Cassville, MO
- Average sunshine days in September: 15 days
The month with the most sunshine days is December (21.3 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in September
Cassville, 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 and December (UV index 2).
Average cloud cover in September
Cassville, MO
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June, July and August (Cloud cover 26).
Average visibility in September
Cassville, 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).
