September weather forecast and climate
Treloar, MO

September, the first month of the autumn, in Treloar, is also a moderately hot month, with average temperature ranging between min 59.2°F (15.1°C) and max 80.1°F (26.7°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 87.3°F (30.7°C) in August, to a warm 80.1°F (26.7°C). The average low-temperature, in Treloar, is 59.2°F (15.1°C).

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Treloar, during 10.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Treloar, during the entire year, the rain falls for 129.1 days and collects up to 20.59" (523mm) of precipitation.

Snowfall

April through October are months without snowfall in Treloar.

Daylight

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

Sunshine

The average sunshine in September is 9.4h.

UV index

In Treloar, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in September in Treloar?

In September, in Treloar, Missouri, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 59.2°F (15.1°C).

What is the average humidity in September in Treloar?

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

How many days does it rain in September in Treloar?

In Treloar, in September, during 10.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

When it does not snow in Treloar?

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

What is the average length of the day in September in Treloar?

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

How long on average sun shines in September in Treloar?

In Treloar, Missouri, the average sunshine in September is 9.4h.

How high is the UV index in September in Treloar?

In September, the average daily maximum UV index in Treloar, Missouri, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Treloar, MO
  • Average high temperature in September: 26.7°C

The warmest month (with the highest average high temperature) is July (31.7°C).
The month with the lowest average high temperature is January (3.6°C).

  • Average low temperature in September: 15.1°C

The month with the highest average low temperature is July (19.9°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).

Average pressure in September - Treloar, MO
  • Average pressure in September: 1016.7mbar

The month with the highest atmospheric pressure is January (1021.2mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).

Average wind speed in September - Treloar, MO
  • Average wind speed in September: 9.1km/h

The windiest month (with the highest average wind speed) is January (13.6km/h).
The calmest months (with the lowest average wind speed) are July and August (8.6km/h).

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

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Treloar, MO
  • Average rainfall in September: 33mm

The wettest month (with the highest rainfall) is May (65mm).
The driest month (with the least rainfall) is January (26mm).

Average rainfall days in September - Treloar, MO
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (6.4 days).

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

The month with the highest snowfall is February (43mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September - Treloar, MO
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is January (6.7 days).
Months with the least snowfall days are May, June, July and August (0 days).

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

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 9.4h

The month with the most sunshine is June (Average sunshine: 10.5h).
Months with the least sunshine are January and February (Average sunshine: 4.7).

Average sunshine days in September - Treloar, MO
  • Average sunshine days in September: 17.2 days

The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is May (12.8 days).

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

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September - Treloar, MO
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

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

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