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Back to the province of Viterbo

Graffignano: 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, 3BMeteo got it wrong least often in this area (74/100).

Earthquakes · Graffignano Air quality · Graffignano

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

Most accurate in this area, last 2 weeks

3BMeteo

Matches the most accurate service in the province
Data updated on 12 October 2026 at 14:48

At the province level

Catches 75% of actual rainfall
When it forecasts rain, it gets it right 82% of the time
Across 4 rainy days

Rain nearby, right now

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

Observed data from the latest radar sweep (09:45) · Radar-DPC, Italian Civil Protection

Yesterday in Viterbo

Observed data for 11 October
23°
High
12°
Low
No rain
Coldest provincial capital in the region

The reference provincial capital for Graffignano 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. Graffignano 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:

VT71%TR23%RI1%PG1%RM<1%+3 more

Weather service ranking for this area

  1. 1
    3BMeteo
    74/100
    3bmeteo.com(opens in a new tab)
  2. 2
    Meteo Aeronautica Militare
    70/100
    meteoam.it(opens in a new tab)
  3. 3
    Meteo.it
    62/100
    meteo.it(opens in a new tab)
  4. 4
    Apple Weather
    59/100
    No public website
  5. 5
    iLMeteo.it
    44/100
    ilmeteo.it(opens in a new tab)

Yesterday's report card

11 October

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

3BMeteoWinner of the day
  • 3BMeteo
    Highspot onLowspot onRaincorrect
  • Meteo.it
    Highspot onLowspot onRaincorrect
  • Meteo Aeronautica Militare
    Highspot onLowspot onRaincorrect
  • iLMeteo.it
    HighcloseLowcloseRaincorrect
  • Apple Weather
    Highspot onLowcloseRaincorrect

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

Ongoing streaks

  • 3BMeteo has nailed the high for 19 days in a row
  • 3BMeteo has nailed the low for 8 days in a row
  • Meteo.it has nailed the low for 6 days in a row

The situation around Graffignano

A rainy week around Viterbo: rain fell on several of the last seven days. Over the last 14 days, 3BMeteo has the highest score for the Graffignano area. Looking at temperatures only, first place in the provincial capital goes to Meteo.it. Frequent windy days, with gusts that were strong at times. Among nearby municipalities (Alviano, Civitella d'Agliano) the ranking changes from one to the next.

Updated on 13 October 2026

Sun and moon today

07:21
Sunrise
18:32
Sunset
11h 12m
Daylight

3 fewer minutes of daylight than yesterday

Waxing crescent, 5% illuminated

Map of Graffignano

Loading map…

Nearby towns

Alviano
6.3 km
Civitella d'Agliano
6.3 km
Bomarzo
6.6 km
Lugnano in Teverina
7.3 km

Localities in Graffignano

Graffignano
Litigata
Pisciarello
Poggio del Castagno
San Nicola
Sipicciano

Get to know Graffignano

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 22 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
2,319
Inhabitants
056029
ISTAT code
Viterbo (VT) • Lazio