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High Rainfall Forecasted for San Jose on September 14

September 14, 2026 · wweather1 editorial · 1 min read

An automatic forecast alert from wweather1.com indicates high-severity rainfall in San Jose on September 14, 2026. Expected precipitation is projected to reach 30.6 mm, exceeding the standard threshold.

An automatic weather alert has been issued by wweather1.com for San Jose (country code CR) due to a forecast indicating a high-severity rain event. The system recorded the event start time as September 14, 2026, at 00:00:00 UTC.

According to internal forecast data for September 14, 2026, total expected precipitation is measured at 30.6 mm. This value surpasses the established monitoring threshold of 30 mm for the region.

The notification was generated automatically after the platform's forecast models detected that the projected rainfall value crossed the predefined threshold, prompting the alert.

Why it is dangerous and what to do

⚠️ Safety
• Monitor local weather updates and official advisories for changing conditions.
• Exercise caution while driving on wet roads and maintain a safe distance from other vehicles.
• Avoid walking or driving through low-lying areas that may collect standing water.
• Keep drainage paths clear around properties to reduce the risk of localized water accumulation.
📊 The numbers, from wweather1 data
San José: now +21°, Rain showers.
That is 3° above the October climate norm.
The record for this date is +26° (2023).
Three-day forecast: 13 October: +27°/+15° · 14 October: +26°/+16° · 15 October: +26°/+17°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

🌍 Weather in nearby cities

📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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