September weather forecast and climate
Circleville, OH

September, the first month of the autumn, in Circleville, is also a moderately hot month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 76.3°F (24.6°C).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 82°F (27.8°C) in August, to a still warm 76.3°F (24.6°C). The average low-temperature, in Circleville, Ohio, is 56.5°F (13.6°C).

Humidity

In Circleville, the average relative humidity is 77%.

Rainfall

September is the month with the least rainfall in Circleville, Ohio. Rain falls for 13.5 days and accumulates 1.93" (49mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in Circleville is 12.4h.

Sunshine

In September, the average sunshine is 8.2h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Circleville?

In September, in Circleville, the average high-temperature is 76.3°F (24.6°C), and the average low-temperature is 56.5°F (13.6°C).

What is the average humidity in September in Circleville?

In Circleville, Ohio, the average relative humidity in September is 77%.

How much does it rain in Circleville in September?

In Circleville, in September, it is raining for 13.5 days, with typically 1.93" (49mm) of accumulated precipitation.

What is the driest month in Circleville?

The month with the least rainfall in Circleville is September when the rain falls for 13.5 days and typically collects 1.93" (49mm) of precipitation.

Does it snow in Circleville in September?

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

When it does not snow in Circleville?

May through September are months without snowfall in Circleville, Ohio.

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

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

How many hours of sunshine does Circleville have in September?

The average sunshine in September in Circleville, Ohio, is 8.2h.

What is the UV index reading in September in Circleville?

In September, the average daily maximum UV index in Circleville, Ohio, is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Circleville, OH
  • Average high temperature in September: 24.6°C

The warmest month (with the highest average high temperature) is July (28.2°C).
The month with the lowest average high temperature is January (1.6°C).

  • Average low temperature in September: 13.6°C

The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).

Average pressure in September - Circleville, OH
  • Average pressure in September: 1017.3mbar

The month with the highest atmospheric pressure is November (1020.8mbar).
The month with the lowest atmospheric pressure is June (1014mbar).

Average wind speed in September - Circleville, OH
  • Average wind speed in September: 9.2km/h

The windiest month (with the highest average wind speed) is January (14.4km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).

Average humidity in September - Circleville, OH
  • Average humidity in September: 77%

Months with the highest relative humidity are January and February (82%).
Months with the lowest relative humidity are October and November (75%).

Average rainfall in September - Circleville, OH
  • Average rainfall in September: 49mm

The wettest month (with the highest rainfall) is May (95mm).
The driest month (with the least rainfall) is September (49mm).

Average rainfall days in September - Circleville, OH
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in September - Circleville, OH
  • Average snowfall in September: 0mm

Months with the highest snowfall are January and February (87mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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

The month with the highest number of snowfall days is January (11.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 8.2h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 3.7h).

Average sunshine days in September - Circleville, OH
  • Average sunshine days in September: 14 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is May (9.2 days).

Average UV index in September - Circleville, 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).

Average cloud cover in September - Circleville, OH
  • Average cloud cover in September: 33

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in September - Circleville, OH
  • Average visibility in September: 9km

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January and February (8km).