July weather forecast and climate
Keystone, FL

Weather in July

July, the same as June, in Keystone, Florida, is a hot summer month, with average temperature fluctuating between 79.5°F (26.4°C) and 87.4°F (30.8°C).

Temperature

In July, the average high-temperature is practically the same as in June - a still tropical 87.4°F (30.8°C). In Keystone, in July, the average low-temperature is 79.5°F (26.4°C).

Heat index

The average heat index in July is evaluated at a sweltering 100.9°F (38.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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', 'felt air temperature', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, wind, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Keystone, the average relative humidity is 74%.

Rainfall

July is the month with the most rainfall. Rain falls for 17.8 days and accumulates 1.77" (45mm) of precipitation.

Daylight

In July, the average length of the day is 13.7h.

Sunshine

In Keystone, the average sunshine in July is 11.1h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Keystone, Florida. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: In July, the average maximum UV index of 7 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.
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FAQ

What is the temperature in July in Keystone?

The average high-temperature, in July, in Keystone, is 87.4°F (30.8°C), while the average low-temperature is 79.5°F (26.4°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines relative humidity and air temperature, is estimated at 100.9°F (38.3°C).

What is the average humidity in July in Keystone?

The average relative humidity in July in Keystone is 74%.

How many days does it rain in July in Keystone?

In July, in Keystone, the rain falls for 17.8 days. Throughout July, 1.77" (45mm) of precipitation is accumulated.

What is the rainiest month in Keystone?

The month with the most rainfall is July when the rain falls for 17.8 days and typically aggregates up to 1.77" (45mm) of precipitation.

How many hours of daylight does Keystone have in July?

The average length of the day in July is 13.7h.

How many hours of sunshine does Keystone have in July?

The average sunshine in July in Keystone is 11.1h.

When is the highest UV index in Keystone?

Months with the highest UV index in Keystone, Florida, are May through September, with an average maximum UV index of 7.

What is the UV index reading in July in Keystone?

In Keystone, the average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in July
Keystone, FL

Average temperature in July - Keystone, FL
  • Average high temperature in July: 87.4°F

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (66°F).

  • Average low temperature in July: 79.5°F

The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (54.5°F).

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Average pressure in July
Keystone, FL

Average pressure in July - Keystone, FL
  • Average pressure in July: 30.02"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is September (29.96").

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Average wind speed in July
Keystone, FL

Average wind speed in July - Keystone, FL
  • Average wind speed in July: 6.7mph

The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in July
Keystone, FL

Average humidity in July - Keystone, FL
  • Average humidity in July: 74%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is May (72%).

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Average rainfall in July
Keystone, FL

Average rainfall in July - Keystone, FL
  • Average rainfall in July: 1.77"

The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is March (0.2").

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Average rainfall days in July
Keystone, FL

Average rainfall days in July - Keystone, FL
  • Average rainfall days in July: 17.8 days

The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is November (5.5 days).

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Average daylight in July /
Average sunshine in July
Keystone, FL

Average daylight in July / Average sunshine in July - Keystone, FL
  • Average daylight in July: 13.7h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in July: 11.1h

The month with the most sunshine is May (Average sunshine: 11.3h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days in July
Keystone, FL

Average sunshine days in July - Keystone, FL
  • Average sunshine days in July: 6.7 days

The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (6.7 days).

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Average UV index in July
Keystone, FL

Average UV index in July - Keystone, FL
  • Average UV index in July: 7

Months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).

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Average cloud cover in July
Keystone, FL

Average cloud cover in July - Keystone, FL
  • Average cloud cover in July: 26

Months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).

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Average visibility in July
Keystone, FL

Average visibility in July - Keystone, FL
  • Average visibility in July: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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