Weather forecast for todaySanto Tomás La Unión, Guatemala

Weather forecast for today

Current condition 09:50 CST

  • 24°C
  • Feels like:
    24°C
Partly Cloudy
Partly Cloudy
  • Precipitation: 0mm
  • Wind: 6km/hSSW 210°
  • Humidity: 83%
  • Dewpoint: 21°C
  • Pressure: 1013.21mbar
  • Visibility: 12.87km
  • UV index: 8
  • ▼
In Santo Tomás La Unión, currently, the sky is partly cloudy, with periods of sunshine.
The temperature is a warm 24°C. The current temperature is almost at the maximum expected 26°C for today.

Wednesday 21. Oct 2026

  • 26°C
  • 20°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 31mm
  • Wind: 11km/hSSW 213°
  • Humidity: 86%
  • UV index: 10
  • Sunrise: 05:58 CST
  • Sunset: 17:42 CST
  • ▼
On Wednesday, in Santo Tomás La Unión, the forecast includes possible thunderstorms.
Intense precipitation of 31mm is anticipated for today. Forecasted temperatures will peak at a moderately hot 26°C and dip to a minimum of a delightful 20°C.
The day’s highest temperature is anticipated to be relatively lower than the standard October average 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: 25°C.
Coldest hour: 0h 22°C.

Chance of precipitation

Highest chance: 14h - 16h 100%.

Hourly weather forecast

  • 10h
  • 24°C
  • Feels like:
    24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0mm
  • Wind: 7km/hSSW 204°
  • Humidity: 81%
  • Pressure: 1013mbar
  • Visibility: 13km
  • UV index: 9
  • ▼
  • 11h
  • 25°C
  • Feels like:
    25°C
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 0mm
  • Wind: 9km/hSSW 205°
  • Humidity: 79%
  • Pressure: 1012mbar
  • Visibility: 13km
  • UV index: 10
  • ▼
  • 12h
  • 25°C
  • Feels like:
    25°C
Thunderstorms
Thunderstorms
  • Precip. probability: 93%
  • Precipitation: 1mm
  • Wind: 10km/hSSW 203°
  • Humidity: 83%
  • Pressure: 1012mbar
  • Visibility: 9km
  • UV index: 8
  • ▼
  • 13h
  • 26°C
  • Feels like:
    29°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 4mm
  • Wind: 11km/hSSW 204°
  • Humidity: 81%
  • Pressure: 1011mbar
  • Visibility: 8km
  • UV index: 5
  • ▼
  • 14h
  • 25°C
  • Feels like:
    25°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 6mm
  • Wind: 11km/hSSW 206°
  • Humidity: 85%
  • Pressure: 1011mbar
  • Visibility: 7km
  • UV index: 3
  • ▼
  • 15h
  • 25°C
  • Feels like:
    25°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 5mm
  • Wind: 11km/hSSW 200°
  • Humidity: 86%
  • Pressure: 1010mbar
  • Visibility: 4km
  • UV index: 1
  • ▼
  • 16h
  • 24°C
  • Feels like:
    24°C
Thunderstorms
Thunderstorms
  • Precip. probability: 100%
  • Precipitation: 4mm
  • Wind: 9km/hSSW 210°
  • Humidity: 90%
  • Pressure: 1010mbar
  • Visibility: 4km
  • UV index: 0
  • ▼
  • 17h
  • 24°C
  • Feels like:
    26°C
Thunderstorms
Thunderstorms
  • Precip. probability: 77%
  • Precipitation: 2mm
  • Wind: 6km/hSW 214°
  • Humidity: 92%
  • Pressure: 1011mbar
  • Visibility: 6km
  • UV index: 0
  • ▼
Sunset: 17:42
  • 18h
  • 23°C
  • Feels like:
    25°C
Thunderstorms
Thunderstorms
  • Precip. probability: 63%
  • Precipitation: 2mm
  • Wind: 4km/hWNW 282°
  • Humidity: 93%
  • Pressure: 1012mbar
  • Visibility: 5km
  • UV index: 0
  • ▼
  • 19h
  • 23°C
  • Feels like:
    24°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 57%
  • Precipitation: 2mm
  • Wind: 2km/hNE 47°
  • Humidity: 94%
  • Pressure: 1012mbar
  • Visibility: 7km
  • UV index: 0
  • ▼
  • 20h
  • 22°C
  • Feels like:
    24°C
Few Showers
Few Showers
  • Precip. probability: 33%
  • Precipitation: 2mm
  • Wind: 3km/hNNE 22°
  • Humidity: 94%
  • Pressure: 1013mbar
  • Visibility: 7km
  • UV index: 0
  • ▼
  • 21h
  • 22°C
  • Feels like:
    23°C
Cloudy
Cloudy
  • Precip. probability: 22%
  • Precipitation: 0mm
  • Wind: 2km/hNNE 26°
  • Humidity: 93%
  • Pressure: 1014mbar
  • Visibility: 6km
  • UV index: 0
  • ▼
  • 22h
  • 22°C
  • Feels like:
    23°C
Cloudy
Cloudy
  • Precip. probability: 19%
  • Precipitation: 0mm
  • Wind: 2km/hNNE 23°
  • Humidity: 93%
  • Pressure: 1014mbar
  • Visibility: 7km
  • UV index: 0
  • ▼
  • 23h
  • 21°C
  • Feels like:
    22°C
Showers
Showers
  • Precip. probability: 47%
  • Precipitation: 3mm
  • Wind: 4km/hNNE 17°
  • Humidity: 93%
  • Pressure: 1014mbar
  • Visibility: 6km
  • UV index: 0
  • ▼
Today, a combination of thunderstorm-prone, cloudy and rain-soaked weather is forecasted.
Rain is predicted from 12h to 20h and at 23h. With moderate precipitation of 6mm, most rainfall is expected at 14h.
The temperature will vary between a maximum of 26°C and a minimum of 21°C. The warmest part of the day is anticipated around 13h.
The maximum temperature will be a few degrees lower than October's average high of 28.6°C. The minimum temperature will be also in line with October's average low of 19.2°C.
Updated: Oct 21, 2026 @ 15:50:40 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 09:50 CST in Santo Tomás La Unión is 24°C.

Today, storm clouds could lead to bursts of thunder and rain.

Yes, it will rain today. Be wary - intense precipitation of 31mm is expected.

Today, the maximum temperature will be 26°C, while the minimum temperature will be 20°C.
The maximum temperature will be a few degrees lower than the average highest temperature 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).

Today, the daylight will last for 11h and 44min.