September weather forecast and climate
Twin Oaks, MO

The first month of the autumn, September, is still a warm month in Twin Oaks, Missouri, with average temperature ranging between max 80.1°F (26.7°C) and min 60.1°F (15.6°C).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 86.5°F (30.3°C) in August, to a warm 80.1°F (26.7°C). The average low-temperature, in September, is 60.1°F (15.6°C).

Humidity

In Twin Oaks, the average relative humidity is 72%.

Rainfall

In Twin Oaks, in September, it is raining for 11.9 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, in Twin Oaks, Missouri, there are 141.7 rainfall days, and 32.01" (813mm) of precipitation is accumulated.

Snowfall

January through March, September, November and December are months with snowfall in Twin Oaks. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Twin Oaks, during the entire year, snow falls for 18.9 days, and aggregates up to 7.2" (183mm) of snow.

Daylight

In Twin Oaks, the average length of the day is 12.4h.

Sunshine

In Twin Oaks, the average sunshine is 9.4h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
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 Twin Oaks?

In September, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 60.1°F (15.6°C).

What is the average humidity in September in Twin Oaks?

In Twin Oaks, Missouri, the average relative humidity in September is 72%.

How many days does it rain in September in Twin Oaks?

In Twin Oaks, in September, it is raining for 11.9 days, with typically 2.17" (55mm) of accumulated precipitation.

When does it start snowing in Twin Oaks?

September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in September in Twin Oaks?

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

How long on average sun shines in September in Twin Oaks?

In September, the average sunshine in Twin Oaks is 9.4h.

How high is the UV index in September in Twin Oaks?

In September, the average daily maximum UV index in Twin Oaks is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in September - Twin Oaks, MO
  • Average high temperature in September: 26.7°C

The warmest month (with the highest average high temperature) is July (30.8°C).
The month with the lowest average high temperature is January (3.4°C).

  • Average low temperature in September: 15.6°C

The month with the highest average low temperature is July (20.7°C).
The coldest month (with the lowest average low temperature) is January (-4.1°C).

Average pressure in September - Twin Oaks, 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 (1013.2mbar).

Average wind speed in September - Twin Oaks, MO
  • Average wind speed in September: 9.2km/h

The windiest month (with the highest average wind speed) is January (14.3km/h).
The calmest month (with the lowest average wind speed) is August (8.6km/h).

Average humidity in September - Twin Oaks, MO
  • Average humidity in September: 72%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September - Twin Oaks, MO
  • Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is May (104mm).
The driest month (with the least rainfall) is February (39mm).

Average rainfall days in September - Twin Oaks, MO
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September - Twin Oaks, MO
  • Average snowfall in September: 1mm

The month with the highest snowfall is January (64mm).
Months with the least snowfall are April, May, June, July, August and October (0mm).

Average snowfall days in September - Twin Oaks, 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 April, May, June, July and August (0 days).

Average daylight in September / Average sunshine in September - Twin Oaks, 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

Months with the most sunshine are June and July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.5h).

Average sunshine days in September - Twin Oaks, MO
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is December (20.1 days).
Months with the least sunshine days are May and July (12.6 days).

Average UV index in September - Twin Oaks, MO
  • Average UV index in September: 5

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

Average cloud cover in September - Twin Oaks, MO
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 51).
Months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in September - Twin Oaks, MO
  • Average visibility in September: 9km

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