September weather forecast
Columbia, MO

The iconic and famed historical columns in Columbia, Missouri
The iconic and famed historical columns in Columbia, Missouri

Weather in September

September, the first month of the autumn in Columbia, is also a moderately hot month, with an average temperature ranging between max 79.5°F (26.4°C) and min 59°F (15°C).

Temperature

In September, the average high-temperature slightly decreases from a hot 86°F (30°C) in August to a moderately hot 79.5°F (26.4°C). The average low-temperature, in Columbia, is 59°F (15°C).

Humidity

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

Rainfall

In Columbia, during September, the rain falls for 8.2 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Columbia, during the entire year, the rain falls for 95.5 days and collects up to 8.62" (219mm) of precipitation.

Snowfall

April through September are months without snowfall in Columbia.

Daylight

In Columbia, Missouri, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:40 pm. On the last day of September, in Columbia, sunrise is at 7:04 am and sunset at 6:53 pm CDT.

Sunshine

In Columbia, Missouri, the average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
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FAQ

What is the temperature in September in Columbia?

In September, the average high-temperature is 79.5°F (26.4°C), and the average low-temperature is 59°F (15°C). in August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 96.8°F (36°C).

What is the average humidity in September in Columbia?

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

How many days does it rain in September in Columbia?

In Columbia, during September, the rain falls for 8.2 days and regularly aggregates up to 0.55" (14mm) of precipitation.

When it does not snow in Columbia?

April through September are months without snowfall in Columbia.

Does it snow in Columbia in September?

In Columbia, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Columbia have in September?

In Columbia, the average day length in September is 12h and 26min.

When is the sunrise / sunset in September in Columbia?

In September, on the first day of the month, sunrise is at 6:38 am and sunset at 7:40 pm. On the last day of the month, in Columbia, sunrise is at 7:04 am and sunset at 6:53 pm CDT.

How many hours of sunshine does Columbia have in September?

In September, the average sunshine duration in Columbia, Missouri, is 9.3h.

How high is the UV index in September in Columbia?

In Columbia, Missouri, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Columbia, MO

Average temperature in September - Columbia, MO
  • Average high temperature in September: 79.5°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in September: 59°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23°F).

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Average pressure in September
Columbia, MO

Average pressure in September - Columbia, 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 (29.91"Hg).

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Average wind speed in September
Columbia, MO

Average wind speed in September - Columbia, MO
  • Average wind speed in September: 6.7mph

The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

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Average humidity in September
Columbia, MO

Average humidity in September - Columbia, 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 (71%).

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Average rainfall in September
Columbia, MO

Average rainfall in September - Columbia, MO
  • Average rainfall in September: 0.55"

The wettest month (with the highest rainfall) is May (1.3").
The driest months (with the least rainfall) are January and February (0.43").

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Average rainfall days in September
Columbia, MO

Average rainfall days in September - Columbia, MO
  • Average rainfall days in September: 8.2 days

The months with the highest number of rainy days are April and May (11.3 days).
The month with the least rainy days is January (3.8 days).

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Average snowfall in September
Columbia, MO

Average snowfall in September - Columbia, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in September
Columbia, MO

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

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Columbia, MO

Average daylight in September / Average sunshine in September - Columbia, MO
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

  • Average sunshine in September: 9h and 18min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).

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Average sunshine days in September
Columbia, MO

Average sunshine days in September - Columbia, MO
  • Average sunshine days in September: 19.7 days

The month with the most sunshine days is December (23.7 days).
The month with the least sunshine days is May (15.6 days).

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Average UV index in September
Columbia, MO

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

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

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Average cloud cover in September
Columbia, MO

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

The months with the most cloud cover are January, February and March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 29).

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Average visibility in September
Columbia, MO

Average visibility in September - Columbia, MO
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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