Current Conditions

San Marcos, San Salvador Department

77°F25°C
Hot

Wind

N 4 mph7 km/h

Humidity

78%

Cloud Cover

28%

As of Thursday, August 13, 2026 at 5:49 AM CST

Today's Outlook

Day

Partly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C. Light wind from the NE around 5 mph7 km/h. Heat risk in the afternoon.

Night

Partly cloudy, with a low around 78°F26°C. Light wind from the NW around 4 mph6 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
HotHigh 95°F35°CLow 77°F25°CPrecip 0 in0 mmCloud 32%Wind N 4 mph7 km/hThursday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C. Light wind from the NE around 5 mph7 km/h. Heat risk in the afternoon. Thursday Night: Partly cloudy, with a low around 78°F26°C. Light wind from the NW around 4 mph6 km/h.
HotHigh 94°F35°CFeels 98°F37°CLow 78°F26°CPrecip 0 in0.1 mm3%Cloud 30%Wind N 4 mph7 km/hFriday: Mostly clear and hot, with a high of 94°F35°C and morning low of 78°F26°C. Light wind from the NE around 5 mph8 km/h. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 79°F26°C. Light wind from the NW around 4 mph6 km/h.
ShowersHigh 93°F34°CFeels 98°F36°CLow 79°F26°CPrecip 0.06 in1.5 mm51%Cloud 35%Wind N 5 mph7 km/hSaturday: Partly cloudy and hot, with a high of 93°F34°C and morning low of 79°F26°C. Light wind from the NNE around 5 mph8 km/h. 28% chance of drizzle in the afternoon. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 79°F26°C. Light wind from the NNW around 4 mph7 km/h. 51% chance of showers in the evening.
DrizzleHigh 94°F34°CLow 76°F25°CPrecip 0.01 in0.3 mm15%Cloud 71%Wind N 5 mph8 km/hSunday: Mostly cloudy and hot, with a high of 94°F34°C and morning low of 76°F25°C. Breezy from the NNE at 6 to 7 mph9 to 11 km/h. Humid. Sunday Night: Mostly cloudy, with a low around 78°F25°C. Light wind from the NNW around 4 mph7 km/h. 15% chance of drizzle overnight.
DrizzleHigh 93°F34°CLow 77°F25°CPrecip 0.02 in0.6 mm23%Cloud 87%Wind N 5 mph7 km/hMonday: Overcast and hot, with a high of 93°F34°C and morning low of 77°F25°C. Light wind from the N around 5 mph8 km/h. Humid. Monday Night: Overcast, with a low around 77°F25°C. Light wind from the NNW around 4 mph7 km/h. 23% chance of drizzle in the evening.
RainHigh 91°F33°CFeels 95°F35°CLow 77°F25°CPrecip 0.26 in6.7 mm89%Cloud 77%Wind NNE 4 mph6 km/hTuesday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 77°F25°C. Light wind from the NE around 4 mph7 km/h. 47% chance of light rain in the morning. Heat risk in the afternoon. Tuesday Night: Overcast, with a low around 78°F26°C. Light wind from the N around 3 mph5 km/h. 89% chance of rain throughout the night.
Light RainHigh 90°F32°CFeels 94°F35°CLow 77°F25°CPrecip 0.25 in6.3 mm62%Cloud 79%Wind NNE 4 mph6 km/hWednesday: Mostly cloudy and hot, with a high of 90°F32°C and morning low of 77°F25°C. Light wind from the NE around 5 mph8 km/h. 43% chance of light rain in the morning. Heavy, humid air. Wednesday Night: Overcast, with a low around 77°F25°C. Light wind from the N around 3 mph5 km/h. 62% chance of light rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1395°F35°C77°F25°C0 in0 mm· —32%HotN 4 mph7 km/h
FridayAug 1494°F35°C
Feels 98°F37°C
78°F26°C0 in0.1 mm· 3%30%HotN 4 mph7 km/h
SaturdayAug 1593°F34°C
Feels 98°F36°C
79°F26°C0.06 in1.5 mm· 51%35%ShowersN 5 mph7 km/h
SundayAug 1694°F34°C76°F25°C0.01 in0.3 mm· 15%71%DrizzleN 5 mph8 km/h
MondayAug 1793°F34°C77°F25°C0.02 in0.6 mm· 23%87%DrizzleN 5 mph7 km/h
TuesdayAug 1891°F33°C
Feels 95°F35°C
77°F25°C0.26 in6.7 mm· 89%77%RainNNE 4 mph6 km/h
WednesdayAug 1990°F32°C
Feels 94°F35°C
77°F25°C0.25 in6.3 mm· 62%79%Light RainNNE 4 mph6 km/h
ThursdayAug 2092°F33°C
Feels 96°F36°C
77°F25°C0.13 in3.3 mm· 56%64%ShowersNNE 4 mph7 km/h
FridayAug 2191°F33°C
Feels 97°F36°C
77°F25°C0.17 in4.2 mm· 62%62%ShowersN 4 mph7 km/h
SaturdayAug 2291°F33°C
Feels 97°F36°C
77°F25°C0.17 in4.2 mm· 64%68%ShowersN 4 mph6 km/h
SundayAug 2391°F33°C
Feels 96°F36°C
77°F25°C0.11 in2.7 mm· 45%70%ShowersN 4 mph7 km/h
MondayAug 2492°F33°C
Feels 96°F36°C
77°F25°C0.1 in2.5 mm· 45%70%ShowersN 4 mph6 km/h
TuesdayAug 2592°F33°C
Feels 96°F36°C
77°F25°C0.11 in2.9 mm· 39%71%Light RainN 4 mph6 km/h
WednesdayAug 2692°F33°C
Feels 97°F36°C
77°F25°C0.1 in2.5 mm· 38%70%ShowersN 4 mph6 km/h
ThursdayAug 2791°F33°C
Feels 96°F36°C
77°F25°C0.15 in3.7 mm· 46%71%Light RainN 4 mph6 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 13.6611°N, 89.1825°W·Elevation: 733m·Timezone: America/El_Salvador·Population: 54,615