October weather forecast
Port Saint John, FL

Weather in October

October, the same as September, is a moderately hot autumn month in Port Saint John, Florida, with average temperature ranging between max 81.7°F (27.6°C) and min 71.8°F (22.1°C).

Temperature

In October, the average high-temperature is practically the same as in September - a warm 81.7°F (27.6°C). In October, the average low-temperature is 71.8°F (22.1°C).

Heat index

The average heat index is evaluated at a tropical 86.9°F (30.5°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. Exposure to direct sunshine can increase heat index values 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 calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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

The average relative humidity in Port Saint John, Florida, is 75%.

Rainfall

In October, the rain falls for 15.7 days. Throughout October, 3.5" (89mm) of precipitation is accumulated. Throughout the year, there are 202 rainfall days, and 40.2" (1021mm) of precipitation is accumulated.

Daylight

In October, the average length of the day is 11.5h.

Sunshine

In Port Saint John, Florida, the average sunshine is 7.1h.

UV index

In October, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the average person.
Note: In October, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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 October in Port Saint John?

In October, in Port Saint John, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 71.8°F (22.1°C). In October, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is evaluated at 86.9°F (30.5°C).

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

The average relative humidity in October in Port Saint John is 75%.

How much does it rain in Port Saint John in October?

In Port Saint John, Florida, in October, it is raining for 15.7 days, with typically 3.5" (89mm) of accumulated precipitation.

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

The average length of the day in October in Port Saint John is 11.5h.

How long on average sun shines in October in Port Saint John?

In Port Saint John, the average sunshine in October is 7.1h.

How high is the UV index in October in Port Saint John?

In Port Saint John, the average daily maximum UV index in October is 6. A UV Index of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.

Average temperature in October
Port Saint John, FL

Average temperature in October - Port Saint John, FL
  • Average high temperature in October: 81.7°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 October: 71.8°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).

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Average pressure in October
Port Saint John, FL

Average pressure in October - Port Saint John, FL
  • Average pressure in October: 29.98"

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

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Average wind speed in October
Port Saint John, FL

Average wind speed in October - Port Saint John, FL
  • Average wind speed in October: 8.3mph

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).

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Average humidity in October
Port Saint John, FL

Average humidity in October - Port Saint John, FL
  • Average humidity in October: 75%

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

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Average rainfall in October
Port Saint John, FL

Average rainfall in October - Port Saint John, FL
  • Average rainfall in October: 3.5"

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

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Average rainfall days in October
Port Saint John, FL

Average rainfall days in October - Port Saint John, FL
  • Average rainfall days in October: 15.7 days

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).

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

Average daylight in October / Average sunshine in October - Port Saint John, FL
  • Average daylight in October: 11.5h

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 October: 7.1h

The month with the most sunshine is July (Average sunshine: 11h).
Months with the least sunshine are January, November and December (Average sunshine: 6.1).

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Average sunshine days in October
Port Saint John, FL

Average sunshine days in October - Port Saint John, FL
  • Average sunshine days in October: 12.5 days

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).

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Average UV index in October
Port Saint John, FL

Average UV index in October - Port Saint John, FL
  • Average UV index in October: 6

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 October
Port Saint John, FL

Average cloud cover in October - Port Saint John, FL
  • Average cloud cover in October: 30

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).

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Average visibility in October
Port Saint John, FL

Average visibility in October - Port Saint John, FL
  • Average visibility in October: 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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