September weather forecast
Grove City, OH

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Weather in September

September introduces the autumn season to Grove City, Ohio. The temperature dip from August is notable, marking cooler evenings and less intense heat. The daylight hours further reduce to 12.4 hours, casting longer shadows and shorter days. September also experiences a significant drop in rainfall and humidity from August. As the city moves into October, residents embrace the distinctive autumn chill.

Temperature

The arrival of September suggests a slight decrease in the average high-temperature, moving from a warm 82°F (27.8°C) in August to a still moderately hot 76.1°F (24.5°C). Nighttime temperatures hover around an average low of 57.7°F (14.3°C) in September.

Humidity

In September, the average relative humidity 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

In Grove City, snow does not fall in May through September.

Daylight

In Grove City, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 7:01 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:15 pm EDT.

Sunshine

The average sunshine in September is 8.1h.

UV index

In Grove City, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

In Grove City, 76.1°F (24.5°C) is the average high-temperature and 57.7°F (14.3°C) is the average low-temperature during September. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September is 74%.

What is the driest month?

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

How much does it rain in September?

In Grove City, in September, it is raining for 13.1 days, with typically 1.69" (43mm) of accumulated precipitation.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

The average day length in September is 12h and 26min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:01 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:15 pm EDT.

How many hours of sunshine does Grove City have in September?

In Grove City, the average sunshine duration in September is 8.1h.

How high is the UV index in September?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Grove City, OH

Average temperature in September - Grove City, 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).

Average pressure in September
Grove City, OH

Average pressure in September - Grove City, 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).

Average wind speed in September
Grove City, OH

Average wind speed in September - Grove City, 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).

Average humidity in September
Grove City, OH

Average humidity in September - Grove City, 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%).

Average rainfall in September
Grove City, OH

Average rainfall in September - Grove City, 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").

Average rainfall days in September
Grove City, OH

Average rainfall days in September - Grove City, 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).

Average snowfall in September
Grove City, OH

Average snowfall in September - Grove City, 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").

Average snowfall days in September
Grove City, OH

Average snowfall days in September - Grove City, 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).

Average daylight in September /
Average sunshine in September
Grove City, OH

Average daylight in September / Average sunshine in September - Grove City, OH
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 8h and 1min

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).

Average sunshine days in September
Grove City, OH

Average sunshine days in September - Grove City, 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).

Average UV index in September
Grove City, OH

Average UV index in September - Grove City, 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).

Average cloud cover in September
Grove City, OH

Average cloud cover in September - Grove City, 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).

Average visibility in September
Grove City, OH

Average visibility in September - Grove City, 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).

Grove City, Ohio, USA

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