San Juan Weather Today

Temperature, Feels Like, Rain Chance & Hourly Forecast in San Juan

San Juan temperature today is 18°, feels like 18°, with a humidity level of 76% and wind at 12.71 km/h. Rain chance today is 66%. Use the hourly forecast and 5-day outlook below to plan your day.

Tomorrow in San Juan: expect a high of 23° and a low of 12°, with clear sky.

overcast clouds
18°
overcast clouds
H: 18° L: 18°
Feels like 18°
AQI: (/5)
Humidity
76%
Dew 14°
Wind speed
12.71 km/h
WNW · G21.64
Pressure
1007 hPa
Visibility
10 km
Windy Conditions
Wind speed is 12.71 km/h.
Weather Summary
Currently in San Juan, expect varied conditions with mild temperatures around 18°. Winds are a light breeze.
Precipitation Probability
66%
18
0%
21
0%
00
0%
03
0%
06
0%
09
0%
12
0%
15
0%
18
0%
21
0%
00
0%
03
0%
06
0%
09
0%
12
0%
15
Evolution
Daily Weather Forecast Evolution (°C)
Lowest temperature
Highest temperature
Temperature Forecast (48h)
18°
Wed
18:00
16°
 
13°
 
12°
 
12°
Thu
06:00
15°
 
21°
 
23°
 
21°
Thu
18:00
17°
 
16°
 
14°
 
13°
Fri
06:00
14°
 
20°
 
23°
 
Hot (≥30°)
Warm
Cool
Cold (<0°)
Weather Map
Sun & Moon
Sunrise
Sunrise
07:10
Sunset
Sunset
19:01
Moon Phase
Waning Gibbous (52%)
Timezone: GMT+05:30
Last updated: Oct 1, 2026 3:21 AM · Data refreshes every 5 min
Location Info
Latitude
Latitude
36.999161
Longitude
Longitude
-109.040939
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More about San Juan
Content curated by the NearWeather editorial team · Updated periodically
San Juan County is located in the U.S. state of Washington. It is made up of islands in the Salish Sea, including Lopez, Orcas, San Juan, and Shaw Islands. The county has a population of 16,094 and covers an area of 523 square miles. The climate in San Juan County is classified as a warm-summer Mediterranean climate, with warm, dry summers and mild, wet winters. Average temperatures range from a low of 37°F in January to a high of 68°F in August. The average annual precipitation is around 44 inches, with most of it occurring between October and May.
Weather data sourced from OpenWeatherMap. Forecasts are estimates and may differ from actual conditions. For severe weather, consult your local meteorological authority.
FAQ's about San Juan
What is the temperature in San Juan right now?

The current temperature in San Juan is 18°, and it feels like 18°. Today's high is 18° and the low is 18°.

Will it rain in San Juan today?

The chance of rain in San Juan today is 66%. Check the hourly forecast above for exact timing.

What is the weather in San Juan today?

San Juan is experiencing overcast clouds with a temperature of 18°. Humidity is at 76% and wind speed is 12.71 km/h from the WNW.

What is the humidity in San Juan today?

Humidity in San Juan is 76% right now, with a dew point of 14°. Comfort levels are moderate.

What is the wind speed in San Juan today?

Wind speed in San Juan is 12.71 km/h, flowing at 295° WNW wind direction. Gusts up to 21.64 km/h.

What is the 5-day forecast for San Juan?

NearWeather provides a detailed 5-day forecast and 48-hour hourly forecast for San Juan. Today's high is 18° and low is 18°, with a 66% chance of rain. Scroll up to view the full day-by-day and hourly breakdown.

What does it feel like in San Juan today?

It feels like 18° in San Juan today, with 100% cloud cover and 10 km visibility.

Weather in San Juan