September weather forecast and climate
Piedmont, MO

The first month of the autumn, September, is still a warm month in Piedmont, Missouri, with average temperature ranging between min 60.1°F (15.6°C) and max 81.3°F (27.4°C).

Temperature

In September, the average high-temperature marginally drops, from a hot 87.8°F (31°C) in August, to a warm 81.3°F (27.4°C). The average low-temperature, in September, is 60.1°F (15.6°C).

Heat index

In September, the average heat index is evaluated at 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, clothing). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in September is 74%.

Rainfall

Months with the least rainfall are September and December Rain falls for 10.2 days and accumulates 1.26" (32mm) of rain.

Snowfall

In Piedmont snow does not fall in April through October.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

The average sunshine in September is 9.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Piedmont?

In Piedmont, in September, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 60.1°F (15.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, in September is appraised at 86°F (30°C).

What is the average humidity in September in Piedmont?

In September, the average relative humidity in Piedmont, Missouri, is 74%.

How much does it rain in Piedmont in September?

In Piedmont, in September, during 10.2 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

What is the driest month in Piedmont?

Months with the least rainfall in Piedmont, Missouri, are September and December Rain falls for 10.2 days and accumulates 1.26" (32mm) of rain.

When it does not snow in Piedmont?

April through October are months without snowfall in Piedmont, Missouri.

How many hours of daylight does Piedmont have in September?

In September, the average length of the day in Piedmont, Missouri, is 12.4h.

How many hours of sunshine does Piedmont have in September?

In September, the average sunshine in Piedmont, Missouri, is 9.6h.

How high is the UV index in September in Piedmont?

In Piedmont, Missouri, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Piedmont, MO
  • Average high temperature in September: 27.4°C

The warmest month (with the highest average high temperature) is July (31.9°C).
The month with the lowest average high temperature is January (5.3°C).

  • Average low temperature in September: 15.6°C

The month with the highest average low temperature is July (20.2°C).
The coldest month (with the lowest average low temperature) is January (-2.7°C).

Average pressure in September - Piedmont, MO
  • Average pressure in September: 1016.5mbar

The month with the highest atmospheric pressure is January (1021.4mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).

Average wind speed in September - Piedmont, MO
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is January (12.8km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).

Average humidity in September - Piedmont, MO
  • Average humidity in September: 74%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Piedmont, MO
  • Average rainfall in September: 32mm

The wettest month (with the highest rainfall) is April (77mm).
The driest months (with the least rainfall) are September and December (32mm).

Average rainfall days in September - Piedmont, MO
  • Average rainfall days in September: 10.2 days

The month with the highest number of rainy days is July (15.7 days).
Months with the least rainy days are January and December (8.1 days).

Average snowfall in September - Piedmont, MO
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (42mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September - Piedmont, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Piedmont, MO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 9.6h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.9h).

Average sunshine days in September - Piedmont, MO
  • Average sunshine days in September: 17.6 days

The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (12 days).

Average UV index in September - Piedmont, MO
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September - Piedmont, MO
  • Average cloud cover in September: 30

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in September - Piedmont, MO
  • Average visibility in September: 9km

Months with the highest visibility are January, February, March, April, June, September, October, November and December (9km).
Months with the lowest visibility are May, July and August (8km).