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
With the arrival of September, Chestnutridge notices a mild change in the average high-temperature, sliding from August's hot 88.9°F (31.6°C) to a moderately hot 81.7°F (27.6°C). In Chestnutridge, the nighttime chill during September is a clear shift from the day's highs, with an average of 59.7°F (15.4°C).Heat index
In September, the heat index is calculated to be a tropical 86°F (30°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
The average relative humidity in September is 74%.Rainfall
In September, in Chestnutridge, the rain falls for 11.8 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. Throughout the year, in Chestnutridge, there are 142.8 rainfall days, and 30.47" (774mm) of precipitation is accumulated.Snowfall
In Chestnutridge, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of September, in Chestnutridge, sunrise is at 7:08 am and sunset at 6:57 pm CDT.
Sunshine
The average sunshine in September in Chestnutridge is 9.4h.UV index
The average daily maximum UV index in September in Chestnutridge is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Chestnutridge?
What is the average humidity in September in Chestnutridge?
How much does it rain in Chestnutridge in September?
When it does not snow in Chestnutridge?
How many hours of daylight does Chestnutridge have in September?
When are sunrise and sunset in September in Chestnutridge?
How many hours of sunshine does Chestnutridge have in September?
What is the UV index intensity in September in Chestnutridge?
Average temperature in September
Chestnutridge, MO
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (44.1°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in September
Chestnutridge, 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
Chestnutridge, MO
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January, February, March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Chestnutridge, MO
- Average humidity in September: 74%
The months with the highest relative humidity are March and May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).
Average rainfall in September
Chestnutridge, MO
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in September
Chestnutridge, MO
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Chestnutridge, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Chestnutridge, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 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
Chestnutridge, MO
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 24min).
Average sunshine days in September
Chestnutridge, MO
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in September
Chestnutridge, 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 and December (UV index 2).
Average cloud cover in September
Chestnutridge, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in September
Chestnutridge, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Chestnutridge, Missouri, USA
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