Home → Weather news → Heavy Rain Forecasted for Key West on September 20, 2026
Heavy Rain Forecasted for Key West on September 20, 2026
An automatic high-severity weather alert indicates that Key West, US, is forecasted to receive 31.72 mm of rain on September 20, 2026. The predicted precipitation value exceeds the monitoring threshold of 30 mm.
An automatic alert system from wweather1.com has registered a high-severity rain event for Key West, US. The event timeframe is set to begin at 00:00:00 UTC on September 20, 2026.
According to the forecast data for September 20, 2026, rain precipitation in Key West is expected to reach 31.72 mm. This volume crosses the established alert threshold of 30 mm.
The notification was issued automatically by wweather1.com after internal forecast data confirmed that the precipitation metric crossed the predefined safety limit.
Why it is dangerous and what to do
⚠️ Safety
• Monitor local weather updates for potential changes in the forecast.
• Exercise caution while driving on wet or slippery roads.
• Ensure outdoor items and property drains are secured and clear of debris.
📊 The numbers, from wweather1 data
Key West: now +29°, Clear.
That is 2° above the September climate norm.
The record for this date is +30° (2009).
Three-day forecast: 20 September: +31°/+25° · 21 September: +27°/+24° · 22 September: +29°/+25°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates. 🌍 Weather in nearby cities
Havana
now
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+28°
Jacksonville
now
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+26°
Cancún
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Miami
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+24°
Tampa
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Orlando
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📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.