September weather forecastCaulfield, MO
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Caulfield, Missouri, with an average temperature varying between 80.6°F (27°C) and 60.1°F (15.6°C).Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a hot 87.4°F (30.8°C) in August to a warm 80.6°F (27°C). During the nights in September, Caulfield experiences a consistent average temperature of 60.1°F (15.6°C).Heat index
For September, the heat index is estimated at 84.2°F (29°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
The average relative humidity in September is 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.81" (46mm) of precipitation.Snowfall
In Caulfield, snow does not fall in June through October.Daylight
In Caulfield, Missouri, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:36 pm. On the last day of September, in Caulfield, sunrise is at 7:03 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September in Caulfield, Missouri, is 9.4h.UV index
In Caulfield, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Caulfield, MO
- Average high temperature in September: 80.6°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.9°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
Caulfield, 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 (29.93"Hg).
Average wind speed in September
Caulfield, MO
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Caulfield, MO
- Average humidity in September: 74%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Caulfield, MO
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Caulfield, MO
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in September
Caulfield, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Caulfield, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Caulfield, 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 24min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Caulfield, MO
- Average sunshine days in September: 15 days
The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in September
Caulfield, 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
Caulfield, MO
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Caulfield, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
