September weather forecast and climate
Columbus, OH

An evening autumn view of the cityscape of Columbus, Ohio
An evening autumn view of the cityscape of Columbus, Ohio

Weather in September

September, the first month of the autumn, in Columbus, is also a moderately hot month, with average temperature varying between 76.1°F (24.5°C) and 57.7°F (14.3°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 82°F (27.8°C) in August, to a still moderately hot 76.1°F (24.5°C). The average low-temperature, is 57.7°F (14.3°C).

Humidity

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

Rainfall

September is the month with the least rainfall in Columbus. Rain falls for 13.1 days and accumulates 1.69" (43mm) of precipitation.

Snowfall

In Columbus snow does not fall in May through September.

Daylight

The average length of the day in Columbus, Ohio, is 12.4h.

Sunshine

In September, the average sunshine in Columbus is 8.1h.

UV index

In Columbus, Ohio, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. 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.
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FAQ

What is the temperature in September in Columbus?

In September, in Columbus, Ohio, the average high-temperature is 76.1°F (24.5°C), and the average low-temperature is 57.7°F (14.3°C).

What is the average humidity in September in Columbus?

In September, the average relative humidity is 74%.

How many days does it rain in September in Columbus?

In September, in Columbus, Ohio, the rain falls for 13.1 days. Throughout September, 1.69" (43mm) of precipitation is accumulated.

What is the driest month in Columbus?

The month with the least rainfall is September when the rain falls for 13.1 days and typically collects 1.69" (43mm) of precipitation.

Does it snow in Columbus in September?

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

When it does not snow in Columbus?

In Columbus, Ohio, snow does not fall in May through September.

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

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

How many hours of sunshine does Columbus have in September?

In September, the average sunshine in Columbus is 8.1h.

What is the UV index intensity in September in Columbus?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Columbus, OH

Average temperature in September - Columbus, OH
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in September: 57.7°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in September
Columbus, OH

Average pressure in September - Columbus, OH
  • Average pressure in September: 30.04"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in September
Columbus, OH

Average wind speed in September - Columbus, OH
  • Average wind speed in September: 6.1mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in September
Columbus, OH

Average humidity in September - Columbus, OH
  • Average humidity in September: 74%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Columbus, OH

Average rainfall in September - Columbus, OH
  • Average rainfall in September: 1.69"

The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in September
Columbus, OH

Average rainfall days in September - Columbus, OH
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (9.1 days).

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Average snowfall in September
Columbus, OH

Average snowfall in September - Columbus, OH
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.31").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Columbus, OH

Average snowfall days in September - Columbus, OH
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Columbus, OH

Average daylight in September / Average sunshine in September - Columbus, OH
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 8.1h

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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Average sunshine days in September
Columbus, OH

Average sunshine days in September - Columbus, OH
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is May (10.1 days).

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Average UV index in September
Columbus, OH

Average UV index in September - Columbus, OH
  • Average UV index in September: 4

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

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Average cloud cover in September
Columbus, OH

Average cloud cover in September - Columbus, OH
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in September
Columbus, OH

Average visibility in September - Columbus, OH
  • Average visibility in September: 6mi

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January and February (5mi).

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