Weather forecast for todayChalchuapa, El Salvador

Weather forecast for today

Current condition 05:42 CST

  • 21°C
  • Feels like:
    21°C
Mostly Cloudy
Mostly Cloudy
  • Precipitation: 0mm
  • Wind: 6km/hNE 50°
  • Humidity: 95%
  • Dewpoint: 20°C
  • Pressure: 1011.85mbar
  • Visibility: 11.27km
  • UV index: 0
  • ▼
Currently, extensive cloud cover is resulting in mainly cloudy conditions.
The temperature is an agreeable 21°C. The current temperature is almost at the minimum-expected 19°C for today.

Tuesday 20. Oct 2026

  • 28°C
  • 19°C
Thunderstorms
Thunderstorms
  • Precip. probability: 70%
  • Precipitation: 9mm
  • Wind: 15km/hNNE 25°
  • Humidity: 80%
  • UV index: 8
  • Sunrise: 05:50 CST
  • Sunset: 17:36 CST
  • ▼
Today, scattered thunderstorms are expected to form.
The likelihood of precipitation is high. However, the rain will be light. The highest temperature will be a moderately hot 28°C, while the lowest temperature will be an enjoyable 19°C.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is evaluated at a tropical 32°C. Note that heat index values are valued for light wind and location in the shade.
The predicted daytime maximum should align with the typical October high of 27.9°C.
Sunrise will be at 05:50 and sunset at 17:36; the daylight will last for 11h and 46min.

Hourly overview

Hourly temperatures

Warmest hour: 14h 30°C.
Coldest hour: 6h 21°C.

Chance of precipitation

Highest chance: 12h 72%.

Hourly weather forecast

  • 6h
  • 21°C
  • Feels like:
    21°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 6km/hNE 52°
  • Humidity: 95%
  • Pressure: 1012mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
  • 8h
  • 24°C
  • Feels like:
    24°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0mm
  • Wind: 10km/hNNE 29°
  • Humidity: 84%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 2
  • ▼
  • 10h
  • 26°C
  • Feels like:
    29°C
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 14km/hNNE 28°
  • Humidity: 74%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 6
  • ▼
  • 12h
  • 27°C
  • Feels like:
    29°C
Thunderstorms
Thunderstorms
  • Precip. probability: 72%
  • Precipitation: 2mm
  • Wind: 15km/hNNE 26°
  • Humidity: 72%
  • Pressure: 1011mbar
  • Visibility: 11km
  • UV index: 5
  • ▼
  • 14h
  • 28°C
  • Feels like:
    30°C
Thunderstorms
Thunderstorms
  • Precip. probability: 66%
  • Precipitation: 1mm
  • Wind: 12km/hNNE 14°
  • Humidity: 70%
  • Pressure: 1009mbar
  • Visibility: 10km
  • UV index: 3
  • ▼
  • 16h
  • 26°C
  • Feels like:
    29°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 53%
  • Precipitation: 1mm
  • Wind: 11km/hN 11°
  • Humidity: 79%
  • Pressure: 1009mbar
  • Visibility: 11km
  • UV index: 1
  • ▼
Sunset: 17:36
  • 18h
  • 24°C
  • Feels like:
    26°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 54%
  • Precipitation: 1mm
  • Wind: 7km/hNNE 21°
  • Humidity: 87%
  • Pressure: 1011mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
  • 20h
  • 23°C
  • Feels like:
    24°C
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 1mm
  • Wind: 8km/hNE 41°
  • Humidity: 90%
  • Pressure: 1013mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
  • 22h
  • 22°C
  • Feels like:
    23°C
Showers
Showers
  • Precip. probability: 43%
  • Precipitation: 1mm
  • Wind: 7km/hNE 40°
  • Humidity: 93%
  • Pressure: 1013mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
Today, a combination of stormy, cloud-filled and rain-soaked weather is expected.
Rain is forecasted practically throughout the entire day. With light precipitation of 2mm, most rainfall is expected at 12h.
The temperature will be between the highest temperature of 28°C and the lowest temperature of 21°C. The warmest part of the day will be at 11h, 13h and 14h.
The maximum temperature will be close to October's average highest temperature of 27.9°C. The temperature low is forecasted to be also resembling the usual October value of 18.5°C.
The coldest month in Chalchuapa is October, featuring an average high of 27.9°C and an average low of 18.5°C.
Updated: Oct 20, 2026 @ 11:42:23 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (05:42 CST) is 21°C.

Today, moderate to strong thunderstorms are in the outlook.

Light precipitation of 9mm is predicted in Chalchuapa, El Salvador. The chance of rainfall is 70%.

Today, the highest temperature will be 28°C, while the lowest temperature will be 19°C. The maximum heat index, which factors the actual air temperature with the relative humidity, is evaluated at 32°C.
The maximum temperature will be in line with the average highest temperature of 27.9°C in October. The lowest temperature will be also in line with the average low of 18.5°C.

On Tuesday, in Chalchuapa, sunrise will be at 05:50 and sunset at 17:36 (CST).

In Chalchuapa, the length of the day today will be 11h and 46min.