September weather forecast
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 an average temperature fluctuating between 76.1°F (24.5°C) and 57.7°F (14.3°C).

Temperature

In Columbus, the average high-temperature in September marginally drops from 82°F (27.8°C) in August to a still warm 76.1°F (24.5°C). In September, in Columbus, the average low-temperature is 57.7°F (14.3°C).

Humidity

The average relative humidity in September in Columbus is 74%.

Rainfall

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

Snowfall

May through September are months without snowfall in Columbus.

Daylight

In Columbus, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:59 am and sunset at 8:04 pm. On the last day of September, in Columbus, sunrise is at 7:27 am and sunset at 7:16 pm EDT.

Sunshine

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

UV index

In September, the average daily maximum UV index in Columbus, Ohio, is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Columbus?

The average high-temperature, in September, in Columbus, Ohio, is 76.1°F (24.5°C), while the average low-temperature is 57.7°F (14.3°C). in August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 87.8°F (31°C).

What is the average humidity in September in Columbus?

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

What is the driest month in Columbus?

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

How many days does it rain in September in Columbus?

In Columbus, during September, the rain falls for 13.1 days and regularly aggregates up to 1.69" (43mm) of precipitation.

When it does not snow in Columbus?

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

Does it snow in Columbus in September?

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

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

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

When are sunrise and sunset in September in Columbus?

On the first day of September in Columbus, sunrise is at 6:59 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:16 pm EDT.

How many hours of sunshine does Columbus have in September?

The average sunshine duration in September is 8.1h.

What is the UV index intensity in September in Columbus?

In Columbus, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
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"Hg

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

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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").
The 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).
The 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: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 58min).
The month with the shortest days is December (Average daylight: 9h and 23min).

  • Average sunshine in September: 8h and 6min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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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

The months with the highest UV index are May, 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
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

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

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