July weather forecast and climate
Centerville, OH

July, the same as June, is a moderately hot summer month in Centerville, Ohio, with average temperature varying between 81.5°F (27.5°C) and 64.9°F (18.3°C).

Temperature

With an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.9°F (18.3°C), July is the warmest month.

Heat index

In July, the average heat index is estimated at a hot 87.8°F (31°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In July, the average relative humidity in Centerville is 81%.

Rainfall

In Centerville, during July, the rain falls for 14.4 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, there are 139.3 rainfall days, and 19.92" (506mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Centerville.

Daylight

The average length of the day in July is 14.6h.

Sunshine

The average sunshine in Centerville is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Centerville. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the warmest month in Centerville?

With an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.9°F (18.3°C), July is the warmest month in Centerville.

What is the temperature in July in Centerville?

In Centerville, in July, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that factores the actual air temperature with the relative humidity, in July is appraised at 87.8°F (31°C).

What is the average humidity in July in Centerville?

In July, the average relative humidity in Centerville is 81%.

How many days does it rain in July in Centerville?

In Centerville, Ohio, during July, the rain falls for 14.4 days and regularly aggregates up to 2.05" (52mm) of precipitation.

When it does not snow in Centerville?

May through September are months without snowfall.

How many hours of daylight does Centerville have in July?

In Centerville, the average length of the day in July is 14.6h.

How many hours of sunshine does Centerville have in July?

The average sunshine in July is 10.1h.

What is the month with the highest UV index in Centerville?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Centerville.

How high is the UV index in July in Centerville?

In Centerville, Ohio, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to the UV radiation.
Average temperature in July - Centerville, OH
  • Average high temperature in July: 27.5°C

The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is January (1.1°C).

  • Average low temperature in July: 18.3°C

The month with the highest average low temperature is July (18.3°C).
The coldest month (with the lowest average low temperature) is January (-5.5°C).

Average pressure in July - Centerville, OH
  • Average pressure in July: 1015mbar

The month with the highest atmospheric pressure is November (1020.6mbar).
The month with the lowest atmospheric pressure is June (1013.8mbar).

Average wind speed in July - Centerville, OH
  • Average wind speed in July: 9km/h

The windiest month (with the highest average wind speed) is January (15.8km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).

Average humidity in July - Centerville, OH
  • Average humidity in July: 81%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (74%).

Average rainfall in July - Centerville, OH
  • Average rainfall in July: 52mm

The wettest month (with the highest rainfall) is May (67mm).
The driest month (with the least rainfall) is October (30mm).

Average rainfall days in July - Centerville, OH
  • Average rainfall days in July: 14.4 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in July - Centerville, OH
  • Average snowfall in July: 0mm

The month with the highest snowfall is February (45mm).
Months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in July - Centerville, OH
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (8.5 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in July / Average sunshine in July - Centerville, OH
  • Average daylight in July: 14.6h

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 July: 10.1h

Months with the most sunshine are June and August (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 3.7h).

Average sunshine days in July - Centerville, OH
  • Average sunshine days in July: 13.7 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (12 days).

Average UV index in July - Centerville, OH
  • Average UV index in July: 6

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 July - Centerville, OH
  • Average cloud cover in July: 32

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 July - Centerville, OH
  • Average visibility in July: 9km

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