Chillicothe
Ohio, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Chillicothe, OH

The first month of the autumn, September, is also a moderately hot month in Chillicothe, Ohio, with average temperature varying between 53.6°F (12°C) and 78.8°F (26°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 84.2°F (29°C) in August, to a still moderately hot 78.8°F (26°C). In Chillicothe, Ohio, the average low-temperature is 53.6°F (12°C).

Rainfall

In Chillicothe, Ohio, during September, the rain falls for 8 days and regularly aggregates up to 3" (77mm) of precipitation. Throughout the year, in Chillicothe, Ohio, there are 138 rainfall days, and 39.8" (1010mm) of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine is 7h.

UV index

The average daily maximum UV index in Chillicothe, Ohio, is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.

What is the temperature in September in Chillicothe?

The average high-temperature, in September, in Chillicothe, is 78.8°F (26°C), while the average low-temperature is 53.6°F (12°C).

How much does it rain in Chillicothe in September?

In September, the rain falls for 8 days. Throughout September, 3" (77mm) of precipitation is accumulated.

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

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

How long on average sun shines in September in Chillicothe?

The average sunshine in September is 7h.

What is the UV index intensity in September in Chillicothe?

The average daily maximum UV index in September in Chillicothe, Ohio, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Chillicothe, OH
  • Average high temperature in September: 79°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in September: 54°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average rainfall in September - Chillicothe, OH
  • Average rainfall in September: 3"

The wettest month (with the highest rainfall) is May (4.3").
The driest month (with the lowest rainfall) is February (2.4").

Average rainfall days in September - Chillicothe, OH
  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is March (14 days).
The month with the lowest number of rainy days is September (8 days).

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

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

  • Average sunshine in September: 7h

The month with most sunshine is June (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 3h).

Average UV index in September - Chillicothe, OH
  • Average UV index in September: 7

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).