July weather forecast
Port Saint John, FL

Share

Weather in July

July, the same as June, in Port Saint John, Florida, is another tropical summer month, with an average temperature fluctuating between 88.3°F (31.3°C) and 76.8°F (24.9°C).

Temperature

Entering July, the average high-temperature is recorded at a still tropical 88.3°F (31.3°C), exhibiting a minimal shift from June's 87.1°F (30.6°C). Port Saint John usually reports an average low-temperature of 76.8°F (24.9°C) during the month of July.

Heat index

The heat index value during July is appraised at an extremely hot 105.8°F (41°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are largely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in July is 78%.

Rainfall

In July, in Port Saint John, Florida, the rain falls for 25.8 days. Throughout July, 5.59" (142mm) of precipitation is accumulated. Throughout the year, in Port Saint John, there are 202 rainfall days, and 40.2" (1021mm) of precipitation is accumulated.

Daylight

In Port Saint John, the average length of the day in July is 13h and 45min.
On the first day of the month, sunrise is at 6:29 am and sunset at 8:24 pm. On the last day of July, sunrise is at 6:44 am and sunset at 8:14 pm EDT.

Sunshine

July has the most sunshine of the year in Port Saint John, with an average of 11h of sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Saint John. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high daily UV index of 7 during July translates into the following directions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete 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.
[Resources]

Frequently asked questions

How hot does it get in Port Saint John in July?

Port Saint John in July has an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 76.8°F (24.9°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is appraised at 105.8°F (41°C).

What is the average humidity in July in Port Saint John?

In July, the average relative humidity in Port Saint John is 78%.

How many days does it rain in July in Port Saint John?

In July, in Port Saint John, Florida, the rain falls for 25.8 days. Throughout July, 5.59" (142mm) of precipitation is accumulated.

What is the average length of the day in July in Port Saint John?

The average day length in July is 13h and 45min.

What time are sunrise and sunset in July in Port Saint John?

On the first day of July in Port Saint John, Florida, sunrise is at 6:29 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 8:14 pm EDT.

What month has the most sunshine in Port Saint John?

July has the most sunshine of the year, with an average of 11h of sunshine.

How many hours of sunshine does Port Saint John have in July?

In July, the average sunshine duration in Port Saint John is 11h.

What are the months with the highest UV index in Port Saint John?

May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Saint John, Florida.

What is the UV index intensity in July in Port Saint John?

In July, the average daily maximum UV index in Port Saint John, Florida, is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Port Saint John, FL

Average temperature in July - Port Saint John, FL
  • Average high temperature in July: 88.3°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (68.4°F).

  • Average low temperature in July: 76.8°F

The month with the highest average low temperature is August (77.9°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

[Resources]

Average pressure in July
Port Saint John, FL

Average pressure in July - Port Saint John, FL
  • Average pressure in July: 30.03"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

[Resources]

Average wind speed in July
Port Saint John, FL

Average wind speed in July - Port Saint John, FL
  • Average wind speed in July: 6mph

The windiest months (with the highest average wind speed) are January and November (8.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).

[Resources]

Average humidity in July
Port Saint John, FL

Average humidity in July - Port Saint John, FL
  • Average humidity in July: 78%

The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is March (71%).

[Resources]

Average rainfall in July
Port Saint John, FL

Average rainfall in July - Port Saint John, FL
  • Average rainfall in July: 5.59"

The wettest month (with the highest rainfall) is August (6.81").
The driest month (with the least rainfall) is March (1.42").

[Resources]

Average rainfall days in July
Port Saint John, FL

Average rainfall days in July - Port Saint John, FL
  • Average rainfall days in July: 25.8 days

The months with the highest number of rainy days are July and August (25.8 days).
The month with the least rainy days is February (10.8 days).

[Resources]

Average daylight in July /
Average sunshine in July
Port Saint John, FL

Average daylight in July / Average sunshine in July - Port Saint John, FL
  • Average daylight in July: 13h and 4min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in July: 11h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are January, November and December (Average sunshine: 6h and 6min).

[Resources]

Average sunshine days in July
Port Saint John, FL

Average sunshine days in July - Port Saint John, FL
  • Average sunshine days in July: 3.7 days

The months with the most sunshine days are January and March (17.2 days).
The month with the least sunshine days is August (2.3 days).

[Resources]

Average UV index in July
Port Saint John, FL

Average UV index in July - Port Saint John, FL
  • Average UV index in July: 7

The 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).

[Resources]

Average cloud cover in July
Port Saint John, FL

Average cloud cover in July - Port Saint John, FL
  • Average cloud cover in July: 27

The months with the most cloud cover are January, November and December (Cloud cover 35).
The month with the least cloud cover is May (Cloud cover 26).

[Resources]

Average visibility in July
Port Saint John, FL

Average visibility in July - Port Saint John, FL
  • Average visibility in July: 6mi

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

[Resources]

Port Saint John, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location