Weather forecast for tomorrow
Monday, Jun 16.
5:46 am
7:03 pm
AST
7:03 pm
AST
Cloudy
88°F / 77°F
- Wind: 17mph E
- Humidity: 74%
- Precip. probability: 14%
- Precipitation: 0"
- UV index: 6
Tomorrow, in San Juan, cloudy weather is anticipated.
The highest predicted temperature is a tropical 87.8°F, while the lowest temperature will be a temperate 77°F.
The maximum heat index, which combines relative humidity and air temperature, is assessed at a fiery hot 102.2°F. Note that heat index values are valued for light wind and location in the shade. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The maximum temperature will align with June's usual high of 84.2°F.
Sunrise will be at 5:46 am and sunset at 7:03 pm; tomorrow's daylight will last for 13h and 17min.
The highest predicted temperature is a tropical 87.8°F, while the lowest temperature will be a temperate 77°F.
The maximum heat index, which combines relative humidity and air temperature, is assessed at a fiery hot 102.2°F. Note that heat index values are valued for light wind and location in the shade. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The maximum temperature will align with June's usual high of 84.2°F.
Sunrise will be at 5:46 am and sunset at 7:03 pm; tomorrow's daylight will last for 13h and 17min.
Frequently asked questions
What is the weather forecast for San Juan for tomorrow?
On Monday, thick clouds will dominate the sky.
What will be the highest temperature tomorrow?
Tomorrow, the maximum temperature in San Juan will be 87.8°F, while the minimum temperature will be 77°F. The maximum heat index, which adjusts the air temperature based on humidity, is computed to be 102.2°F.
The highest temperature will be in line with the average maximum of 84.2°F in June. The lowest temperature will be also in line with the average low of 78.3°F.
The highest temperature will be in line with the average maximum of 84.2°F in June. The lowest temperature will be also in line with the average low of 78.3°F.
When is the sunrise / sunset tomorrow?
On Monday, in San Juan, sunrise will be at 5:46 am and sunset at 7:03 pm (AST).
How long will the day be tomorrow?
Tomorrow, the daylight will last for 13h and 17min.
Hourly weather forecast
12 am
- 81°F
- Feels like:
86°F
Cloudy
- Wind: 7mph E
- Pressure: 30.09"Hg
- Humidity: 82%
- Precip. probability: 9%
- Precipitation: 0"
- Visibility: 10mi
2 am
- 79°F
- Feels like:
86°F
Cloudy
- Wind: 7mph E
- Pressure: 30.06"Hg
- Humidity: 84%
- Precip. probability: 11%
- Precipitation: 0"
- Visibility: 10mi
4 am
- 79°F
- Feels like:
84°F
Cloudy
- Wind: 6mph ESE
- Pressure: 30.06"Hg
- Humidity: 87%
- Precip. probability: 13%
- Precipitation: 0"
- Visibility: 10mi
Sunrise: 5:46 am
6 am
- 79°F
- Feels like:
84°F
Cloudy
- Wind: 6mph ESE
- Pressure: 30.06"Hg
- Humidity: 88%
- Precip. probability: 14%
- Precipitation: 0"
- Visibility: 8mi
8 am
- 81°F
- Feels like:
90°F
Cloudy
- Wind: 9mph E
- Pressure: 30.09"Hg
- Humidity: 81%
- Precip. probability: 8%
- Precipitation: 0"
- Visibility: 10mi
10 am
- 84°F
- Feels like:
93°F
Cloudy
- Wind: 15mph E
- Pressure: 30.09"Hg
- Humidity: 72%
- Precip. probability: 6%
- Precipitation: 0"
- Visibility: 10mi
12 pm
- 86°F
- Feels like:
95°F
Cloudy
- Wind: 16mph ENE
- Pressure: 30.09"Hg
- Humidity: 72%
- Precip. probability: 14%
- Precipitation: 0"
- Visibility: 10mi
2 pm
- 86°F
- Feels like:
97°F
Cloudy
- Wind: 17mph ENE
- Pressure: 30.03"Hg
- Humidity: 69%
- Precip. probability: 7%
- Precipitation: 0"
- Visibility: 10mi
4 pm
- 84°F
- Feels like:
93°F
Cloudy
- Wind: 17mph ENE
- Pressure: 30.03"Hg
- Humidity: 72%
- Precip. probability: 8%
- Precipitation: 0"
- Visibility: 10mi
6 pm
- 82°F
- Feels like:
91°F
Cloudy
- Wind: 15mph E
- Pressure: 30.03"Hg
- Humidity: 76%
- Precip. probability: 9%
- Precipitation: 0"
- Visibility: 10mi
Sunset: 7:03 pm
8 pm
- 82°F
- Feels like:
90°F
Cloudy
- Wind: 12mph E
- Pressure: 30.06"Hg
- Humidity: 79%
- Precip. probability: 8%
- Precipitation: 0"
- Visibility: 10mi
10 pm
- 81°F
- Feels like:
88°F
Cloudy
- Wind: 11mph E
- Pressure: 30.06"Hg
- Humidity: 83%
- Precip. probability: 4%
- Precipitation: 0"
- Visibility: 10mi
Tomorrow, on Monday, cloudiness will dominate.
The temperature will be between the lowest temperature of 78.8°F and the highest temperature of 86°F. The feels-like temperature will be between a minimum of 84.2°F and a maximum of 96.8°F. The hottest part of the day will be from 11 am to 3 pm.
The high temperature is expected to be similar to June's usual value of 84.2°F. The night temperature will be also close to the standard June low of 78.3°F.
The temperature will be between the lowest temperature of 78.8°F and the highest temperature of 86°F. The feels-like temperature will be between a minimum of 84.2°F and a maximum of 96.8°F. The hottest part of the day will be from 11 am to 3 pm.
The high temperature is expected to be similar to June's usual value of 84.2°F. The night temperature will be also close to the standard June low of 78.3°F.
Updated: Jun 15, 2025 @ 04:44:31 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate