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HomeWeather news → High Rainfall Forecasted for Rovaniemi on September 20
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High Rainfall Forecasted for Rovaniemi on September 20

September 20, 2026 · wweather1 editorial · 1 min read

An automatic weather alert has been issued for Rovaniemi, Finland, where rainfall is forecast to reach 30.3 mm on September 20, 2026. This forecasted precipitation exceeds the established high-severity threshold of 30 mm.

The automated weather monitoring system of wweather1.com has generated a high-severity alert for Rovaniemi, Finland. The alert period began at 00:00 UTC on September 20, 2026, based on calculations from the website's own forecast data.

According to the forecast for September 20, the city is expected to receive 30.3 mm of precipitation. This value officially crosses the designated monitoring threshold of 30 mm for the area.

The alert was issued automatically when the forecasted precipitation metric crossed the system threshold. This report relies strictly on the automated forecast data generated by wweather1.com.

Why it is dangerous and what to do

⚠️ Safety
• Monitor local weather updates and official advisories.
• Clear residential gutters and drains to prevent localized pooling of water.
• Avoid driving through heavily accumulated water on roads.
📊 The numbers, from wweather1 data
Rovaniemi: now +11°, Overcast.
That is 1° above the September climate norm.
The record for this date is +16° (2001).
Three-day forecast: 20 September: +12°/+9° · 21 September: +13°/+7° · 22 September: +13°/+5°
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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