Weather forecast for todaySanto Tomás La Unión, Guatemala

Weather forecast for today

Current condition 12:20 CST

  • 24°C
  • Feels like:
    24°C
Mostly Cloudy
Mostly Cloudy
  • Precipitation: 0mm
  • Wind: 11km/hS 190°
  • Humidity: 89%
  • Dewpoint: 22°C
  • Pressure: 1012.19mbar
  • Visibility: 3.54km
  • UV index: 8
  • ▼
Currently, the weather is mostly cloudy, with only a few breaks of sunshine.
The temperature is a temperate 24°C. The current temperature is at its highest of the day.

Wednesday 21. Oct 2026

  • 24°C
  • 20°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 38mm
  • Wind: 12km/hSSW 202°
  • Humidity: 90%
  • UV index: 8
  • Sunrise: 05:58 CST
  • Sunset: 17:42 CST
  • ▼
Today, on Wednesday, 21st of October, thunderstorms may develop under unsettled skies.
Intense precipitation of 38mm is anticipated. A subtle difference will be noticeable between the daytime peak temperature of a temperate 24°C and the nighttime low of a pleasant 20°C.
The high temperature will be relatively lower than the typical October level of 28.6°C.
Sunrise was at 05:58 and sunset will be at 17:42; the daylight will last for 11h and 44min.

Hourly overview

Hourly temperatures

Maximum temperature: 24°C.
Minimum temperature: 23°C.

Chance of precipitation

Highest chance: 14h - 18h 100%.

Hourly weather forecast

  • 13h
  • 24°C
  • Feels like:
    24°C
Thunderstorms
Thunderstorms
  • Precip. probability: 92%
  • Precipitation: 4mm
  • Wind: 12km/hSSW 193°
  • Humidity: 88%
  • Pressure: 1011mbar
  • Visibility: 5km
  • UV index: 5
  • ▼
  • 14h
  • 24°C
  • Feels like:
    24°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 6mm
  • Wind: 11km/hSSW 196°
  • Humidity: 91%
  • Pressure: 1011mbar
  • Visibility: 4km
  • UV index: 2
  • ▼
  • 15h
  • 24°C
  • Feels like:
    24°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 6mm
  • Wind: 11km/hSSW 193°
  • Humidity: 91%
  • Pressure: 1010mbar
  • Visibility: 4km
  • UV index: 1
  • ▼
  • 16h
  • 24°C
  • Feels like:
    24°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 5mm
  • Wind: 9km/hSSW 200°
  • Humidity: 89%
  • Pressure: 1010mbar
  • Visibility: 3km
  • UV index: 0
  • ▼
  • 17h
  • 24°C
  • Feels like:
    24°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 4mm
  • Wind: 6km/hSSW 202°
  • Humidity: 90%
  • Pressure: 1011mbar
  • Visibility: 4km
  • UV index: 0
  • ▼
Sunset: 17:42
  • 18h
  • 23°C
  • Feels like:
    23°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 4mm
  • Wind: 4km/hN 3°
  • Humidity: 92%
  • Pressure: 1012mbar
  • Visibility: 4km
  • UV index: 0
  • ▼
  • 19h
  • 23°C
  • Feels like:
    23°C
Rain
Rain
  • Precip. probability: 83%
  • Precipitation: 3mm
  • Wind: 2km/hNNE 32°
  • Humidity: 92%
  • Pressure: 1013mbar
  • Visibility: 4km
  • UV index: 0
  • ▼
  • 20h
  • 22°C
  • Feels like:
    24°C
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 3km/hNNE 13°
  • Humidity: 92%
  • Pressure: 1013mbar
  • Visibility: 7km
  • UV index: 0
  • ▼
  • 21h
  • 22°C
  • Feels like:
    23°C
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 3km/hNNE 18°
  • Humidity: 92%
  • Pressure: 1014mbar
  • Visibility: 6km
  • UV index: 0
  • ▼
  • 22h
  • 22°C
  • Feels like:
    23°C
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 3km/hNNE 27°
  • Humidity: 92%
  • Pressure: 1014mbar
  • Visibility: 7km
  • UV index: 0
  • ▼
  • 23h
  • 21°C
  • Feels like:
    23°C
Showers
Showers
  • Precip. probability: 47%
  • Precipitation: 5mm
  • Wind: 4km/hNNE 18°
  • Humidity: 92%
  • Pressure: 1014mbar
  • Visibility: 4km
  • UV index: 0
  • ▼
Today, in Santo Tomás La Unión, a combination of lightning-active, dull and rain-soaked weather is expected.
Rainfall is expected from 13h to 19h and at 23h. The most intense rain will be falling at 14h and 15h.
The temperature will be between the highest temperature of 24°C and the lowest temperature of 21°C. The warmest part of the day will be from 13h to 17h.
The temperature is expected to be moderately lower than the average peak in October, which is 28.6°C. The lowest temperature is also resembling October's typical minimum of 19.2°C.
Updated: Oct 21, 2026 @ 18:20:03 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

At 12:20 CST, the temperature is 24°C.

On Wednesday, in Santo Tomás La Unión, storm systems may continue to produce thunderstorms.

Yes, it will rain today. Beware - heavy precipitation of 38mm is expected.

Today, the highest temperature will be 24°C, while the lowest temperature will be 20°C.
The highest temperature will be a couple of degrees lower than the average maximum of 28.6°C in October. The lowest temperature will be in line with the average low of 19.2°C.

On Wednesday, in Santo Tomás La Unión, sunrise was at 05:58 and sunset will be at 17:42 (CST).

In Santo Tomás La Unión, the length of the day today will be 11h and 44min.