Weather forecast for tomorrow
Port Saint John, FL

Weather forecast for tomorrow

Monday, May 5.

PM Thunderstorms
6:37 am

8:02 pm
EDT
PM Thunderstorms
88°F / 68°F
  • Wind: 10mph S
  • Humidity: 68%
  • Precip. probability: 42%
  • Precipitation: 0.43"
  • UV index: 11
Tomorrow, on Monday, May 5, expect thunderstorms and downpours in the afternoon.
With a low probability, moderate precipitation is expected. The maximum anticipated temperature is a blazing 87.8°F, while the minimum temperature will be an agreeable 68°F.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is evaluated at a torrid 98.6°F. Note that heat index values are valued for light wind and location in the shade. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
Forecasts suggest the maximum temperature will be a couple of degrees higher than May's average of 83.1°F.
Sunrise will be at 6:37 am and sunset at 8:02 pm; tomorrow's daylight will last for 13h and 25min.

Frequently asked questions

What is the weather forecast for Port Saint John for tomorrow?
Tomorrow, showers and thunder will dominate the later part of the day.
Will it rain tomorrow?
Moderate precipitation of 0.43" is forecasted. The chance of rainfall is 42%.
What will be the maximum temperature tomorrow in Port Saint John?
Tomorrow, the maximum temperature will be 87.8°F, while the minimum temperature will be 68°F. The maximum heat index, which represents the influence of relative humidity on air temperature, is estimated at 98.6°F.
The maximum temperature will be relatively higher than the average highest temperature of 83.1°F in May. The lowest temperature will be in line with the average low of 71.4°F.
When are sunrise and sunset tomorrow?
On Monday, in Port Saint John, sunrise will be at 6:37 am and sunset at 8:02 pm (EDT).
How long will the day be tomorrow in Port Saint John?
Tomorrow, the daylight will last for 13h and 25min.

Hourly weather forecast

12 am
  • 72°F
  • Feels like:
    73°F
Partly Cloudy
Partly Cloudy
  • Wind: 5mph SSW
  • Pressure: 29.91"Hg
  • Humidity: 89%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 9mi
2 am
  • 70°F
  • Feels like:
    72°F
Mostly Clear
Mostly Clear
  • Wind: 4mph SSW
  • Pressure: 29.88"Hg
  • Humidity: 92%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 7mi
4 am
  • 68°F
  • Feels like:
    70°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph SW
  • Pressure: 29.88"Hg
  • Humidity: 97%
  • Precip. probability: 9%
  • Precipitation: 0"
  • Visibility: 5mi
6 am
  • 68°F
  • Feels like:
    70°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph WSW
  • Pressure: 29.91"Hg
  • Humidity: 98%
  • Precip. probability: 9%
  • Precipitation: 0"
  • Visibility: 4mi
Sunrise: 6:37 am
8 am
  • 70°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Wind: 2mph W
  • Pressure: 29.94"Hg
  • Humidity: 96%
  • Precip. probability: 9%
  • Precipitation: 0"
  • Visibility: 8mi
10 am
  • 79°F
  • Feels like:
    82°F
Mostly Sunny
Mostly Sunny
  • Wind: 4mph SW
  • Pressure: 29.97"Hg
  • Humidity: 71%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 84°F
  • Feels like:
    88°F
Partly Cloudy
Partly Cloudy
  • Wind: 5mph SSW
  • Pressure: 29.97"Hg
  • Humidity: 55%
  • Precip. probability: 17%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 86°F
  • Feels like:
    91°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph SSE
  • Pressure: 29.94"Hg
  • Humidity: 53%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 84°F
  • Feels like:
    90°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 9mph ESE
  • Pressure: 29.91"Hg
  • Humidity: 59%
  • Precip. probability: 42%
  • Precipitation: 0.12"
  • Visibility: 7mi
6 pm
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 9mph SE
  • Pressure: 29.94"Hg
  • Humidity: 68%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 77°F
  • Feels like:
    81°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SSE
  • Pressure: 29.94"Hg
  • Humidity: 79%
  • Precip. probability: 14%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:02 pm
10 pm
  • 73°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Wind: 4mph S
  • Pressure: 30"Hg
  • Humidity: 88%
  • Precip. probability: 12%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, on Monday, a combination of primarily dull and occasionally turbulent and mostly clear weather is predicted.
Rainfall is forecasted at 4 pm and 5 pm. With light precipitation of 0.12", most rainfall is expected at 4 pm.
The temperature will be between a minimum of 66.2°F and a maximum of 86°F. The hottest part of the day will be from 1 pm to 3 pm.
The highest temperature will be relatively higher than May's average maximum of 83.1°F. The night temperature will be also close to the standard May low of 71.4°F.
Updated: May 4, 2025 @ 05:25:41 UTC
Published by: Weather U.S. | About Us
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