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Back to the province of Viterbo

Piansano: which weather forecast is most accurate

Data come from the province of Viterbo (reference capital: Viterbo), combined with nearby provinces weighted by distance. Over the last two weeks, Meteo Aeronautica Militare got it wrong least often in this area (66/100).

Earthquakes · Piansano Air quality · Piansano

No weather alerts today for Piansano · Source: Italian Civil Protection Department

Most accurate in this area, last 2 weeks

Meteo Aeronautica Militare

Data updated on 13 October 2026 at 14:56

At the province level

Catches 60% of actual rainfall
When it forecasts rain, it gets it right 82% of the time
Across 5 rainy days

Rain nearby, right now

The nearest rain core is less than 1 km north of the centre of Piansano, with light intensity.

Observed data from the latest radar sweep (15:10) · Radar-DPC, Italian Civil Protection

Yesterday in Viterbo

Observed data for 12 October
24°
High
14°
Low
1.8 mm of rain

The reference provincial capital for Piansano is Viterbo

How we calculate the score

Every day we compare the forecasts of 5 weather services with data measured in the provincial capitals. The score runs from 0 to 100 and covers the last 14 days: 75% is about forecasting rain and 25% about temperature. Piansano is not a measuring point: the score combines data from 8 provinces, weighted by distance.

How we measure accuracy
How much each province counts

For this town the score combines data from 8 provinces, weighted by geographic distance.

Provinces considered:

VT69%TR11%GR7%SI4%PG3%+3 more

Weather service ranking for this area

  1. 1
    Meteo Aeronautica Militare
    66/100
    meteoam.it(opens in a new tab)
  2. 2
    3BMeteo
    66/100
    3bmeteo.com(opens in a new tab)
  3. 3
    Meteo.it
    55/100
    meteo.it(opens in a new tab)
  4. 4
    Apple Weather
    53/100
    No public website
  5. 5
    iLMeteo.it
    41/100
    ilmeteo.it(opens in a new tab)

Yesterday's report card

12 October

Forecasts made the day before for Viterbo, compared with what actually happened

Meteo Aeronautica MilitareWinner of the day
  • Meteo Aeronautica Militare
    Highspot onLowspot onRaincorrect
  • 3BMeteo
    Highspot onLowspot onRainwrong
  • Meteo.it
    Highspot onLowspot onRainwrong
  • iLMeteo.it
    HighcloseLowcloseRainwrong
  • Apple Weather
    HighcloseLowspot onRainwrong

Spot on = within 2 degrees · Close = within 4 degrees

Ongoing streaks

  • 3BMeteo has nailed the high for 20 days in a row
  • 3BMeteo has nailed the low for 9 days in a row
  • Meteo.it has nailed the low for 7 days in a row

The situation around Piansano

A rainy week around Viterbo: rain fell on several of the last seven days. Meteo Aeronautica Militare tops the 14-day ranking for the Piansano area, but by a minimal margin of under 3 points over the second-placed service. For rain alone, the most accurate service in the provincial capital is 3BMeteo, while a third service leads on temperatures. Frequent windy days, with gusts that were strong at times. Nearby municipalities (Capodimonte, Arlena di Castro) have the same service in first place. In wet weeks like this one, rain forecasts matter most: they account for three quarters of the score.

Updated on 13 October 2026

Sun and moon today

07:22
Sunrise
18:34
Sunset
11h 12m
Daylight

3 fewer minutes of daylight than yesterday

Waxing crescent, 5% illuminated

Map of Piansano

Loading map…

Nearby towns

Capodimonte
4.5 km
Arlena di Castro
6.3 km
Cellere
6.6 km
Marta
6.8 km

Localities in Piansano

Marinello
Piansano

Get to know Piansano

Over the last two months, next-day forecasts for the Viterbo area had an average accuracy index of 73 out of 100 (average across all services). It ranks 26 of 107 among Italy's most predictable areas.

Average accuracy by how far ahead the forecast is made:

  • For tomorrow
    73/100 · very reliable
  • 2 days ahead
    73/100 · very reliable
  • 5 days ahead
    66/100 · fairly reliable
2,147
Inhabitants
056043
ISTAT code
Viterbo (VT) • Lazio