September weather forecast
Clarington, OH

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Weather in September

As September graces Clarington, the weather starts to cool, signifying the change from summer to fall. The slowing rhythm of life becomes discernible and evenings acquire a fresh chill. The changing shades of leaves offer a colour palette of rustic hues. This month's weather supports the onset of harvest festivals and an array of pumpkin-spiced delights. Echoes of summer warmth blend with the crisp promise of fall, crafting a unique seasonal charm.

Temperature

During the shift to September in Clarington, a minor reduction in average high-temperature is observed, shifting from a moderately hot 82.8°F (28.2°C) in August to a still warm 76.6°F (24.8°C). Throughout September, Clarington registers a consistent average low-temperature of 55.4°F (13°C).

Humidity

In Clarington, Ohio, the average relative humidity in September is 79%.

Rainfall

The month with the least rainfall in Clarington is September, when the rain falls for 13.6 days and typically collects 1.61" (41mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:52 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:07 pm EDT.

Sunshine

In Clarington, the average sunshine in September is 8.4h.

UV index

The average daily maximum UV index in September in Clarington is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In September, an average UV index of 4 transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Clarington in September?

An average high-temperature, in September, in Clarington, is 76.6°F (24.8°C) and the average low-temperature is 55.4°F (13°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 89.6°F (32°C).

What is the average humidity in September in Clarington?

The average relative humidity in September is 79%.

What is the driest month in Clarington?

September is the month with the least rainfall in Clarington. Rain falls for 13.6 days and accumulates 1.61" (41mm) of precipitation.

How many days does it rain in September in Clarington?

In Clarington, in September, it is raining for 13.6 days, with typically 1.61" (41mm) of accumulated precipitation.

When it does not snow in Clarington?

In Clarington, Ohio, snow does not fall in May through October.

How many hours of daylight does Clarington have in September?

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

When are sunrise and sunset in September in Clarington?

On the first day of September, sunrise is at 6:52 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:07 pm EDT.

How long on average sun shines in September in Clarington?

In September, the average sunshine duration in Clarington, Ohio, is 8.4h.

How high is the UV index in September in Clarington?

In Clarington, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Clarington, OH

Average temperature in September - Clarington, OH
  • Average high temperature in September: 76.6°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in September: 55.4°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

Average pressure in September
Clarington, OH

Average pressure in September - Clarington, OH
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Clarington, OH

Average wind speed in September - Clarington, OH
  • Average wind speed in September: 4.7mph

The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in September
Clarington, OH

Average humidity in September - Clarington, OH
  • Average humidity in September: 79%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (77%).

Average rainfall in September
Clarington, OH

Average rainfall in September - Clarington, OH
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in September
Clarington, OH

Average rainfall days in September - Clarington, OH
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (10.2 days).

Average snowfall in September
Clarington, OH

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

The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Clarington, OH

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

The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in September
Clarington, OH

Average sunshine days in September - Clarington, OH
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (16.9 days).
The months with the least sunshine days are January and February (8.7 days).

Average UV index in September
Clarington, OH

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

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September
Clarington, OH

Average cloud cover in September - Clarington, OH
  • Average cloud cover in September: 39

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in September
Clarington, OH

Average visibility in September - Clarington, OH
  • Average visibility in September: 5mi

The month with the highest visibility is November (6mi).
The month with the lowest visibility is January (4mi).

Clarington, Ohio, USA

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