Grotte di Castro
Yellow alert today for thunderstorms
Source: Italian Civil Protection Department · 25 August
Today, the most reliable forecast for Grotte di Castro is
3BMeteo
At the province level
Rain nearby, right now
The nearest rain core is less than 1 km north of the centre of Grotte di Castro, with light intensity. It is moving north-east at about 74 km/h.
Observed data from the latest radar sweep (08:35) · Radar-DPC, Italian Civil Protection
Yesterday in Viterbo
Observed data for 23 AugustThe reference provincial capital for Grotte di Castro is Viterbo
Why trust this recommendation?
Every day we compare the forecasts of 5 weather services against the actual weather in Grotte di Castro. 3BMeteo gets it wrong less often than the others: over the latest period it got 6 out of 10 forecasts right.
Weather service ranking
Most accurate yesterday
3BMeteo nailed it.
Most reliable this week
3BMeteo was the most accurate.
Yesterday's report card
23 AugustForecasts made the day before for Viterbo, compared with what actually happened
- Meteo Aeronautica MilitareHighspot onLowspot onRaincorrect
- 3BMeteoHighspot onLowspot onRaincorrect
- Apple WeatherHighcloseLowspot onRaincorrect
- Meteo.itHighspot onLowspot onRaincorrect
- iLMeteo.itHighoffLowcloseRaincorrect
Spot on = within 2 degrees · Close = within 4 degrees
Ongoing streaks
- 3BMeteo has nailed the high for 19 days in a row
- Meteo Aeronautica Militare has nailed the high for 14 days in a row
- Apple Weather has nailed the low for 4 days in a row
The weather in Grotte di Castro
An umbrella was essential in Grotte di Castro. For Grotte di Castro, 3BMeteo comes out best, but iLMeteo.it is right there, a millimetre away. Interestingly, iLMeteo.it is more accurate on rain, while for temperatures it's worth checking Meteo Aeronautica Militare. The wind gave no respite, with gusts at times violent. The trend holds in the surrounding area: in San Lorenzo Nuovo and Onano, 3BMeteo still dominates. With all this rain, relying on iLMeteo.it for precipitation is the right call.
Updated on 25 August 2026
Sun and moon today
3 fewer minutes of daylight than yesterday
Waxing gibbous, 93% illuminated
Map of Grotte di Castro
Loading map…
Nearby towns
How was this calculated?
The score is calculated by interpolating data from 8 nearby provinces, weighted by geographic distance.
Provinces considered:
Localities in Grotte di Castro
Get to know Grotte di Castro
How predictable is the weather around here? Over the last two months, forecasts for the Viterbo area were right 73% of the time on average. It is the 11th most predictable area in Italy out of 107.
How much to trust forecasts, depending on how far ahead they are:
- For tomorrow73% · almost always right
- 2 days ahead73% · almost always right
- 5 days ahead68% · fairly reliable
How does it work? Every day we collect weather forecasts and compare them against real data to determine which service is most reliable for Grotte di Castro.