Home → Weather news → Heavy Rain Forecasted for Hagatna, Guam on August 17, 2026
Heavy Rain Forecasted for Hagatna, Guam on August 17, 2026
Automated forecast data indicates high-severity rainfall in Hagatna, Guam, on August 17, 2026. Expected precipitation levels are projected to exceed established threshold limits.
An automatic weather alert has been triggered for Hagatna, Guam, with the event period starting at 00:00:00 UTC on August 17, 2026. The high-severity alert was generated directly from wweather1.com forecast data.
According to the system's forecast, total precipitation in Hagatna is predicted to reach 52.4 mm for the day. This value significantly surpasses the automated system's alert threshold of 30 mm.
The alert remains active for the forecast date of August 17, 2026, based on the automated threshold crossing detected by wweather1.com.
Why it is dangerous and what to do
⚠️ Safety
• Avoid driving through flooded areas or low-lying roadways.
• Monitor local weather updates and official municipal announcements.
• Ensure outdoor drainage systems are clear of debris to prevent water buildup.
📊 The numbers, from wweather1 data
Hagåtña: now +26°, Rain showers.
That is 2° above the August climate norm.
The record for this date is +32° (2025).
Three-day forecast: 16 August: +32°/+25° · 17 August: +30°/+25° · 18 August: +31°/+25°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates. 📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.