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Most accurate weather forecast in the province of Siena

Data come from the provincial capital, Siena, where we check the weather services' forecasts every day. Over the last two weeks, 3BMeteo forecast rain best (81/100).How we measure accuracy

Earthquakes · province of Siena Air quality · province of Siena

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

Most accurate in the province, last 2 weeks

3BMeteo

Catches 78% of actual rainfall
When it forecasts rain, it's right 100% of the time
Across 3 rainy days
Almost tied with Meteo.it

Weather service ranking (Siena data)

  1. 1
    3BMeteo
    81/100
    3bmeteo.com(opens in a new tab)
  2. 2
    Meteo.it
    81/100
    meteo.it(opens in a new tab)
  3. 3
    Apple Weather
    64/100
    No public website
  4. 4
    iLMeteo.it
    61/100
    ilmeteo.it(opens in a new tab)
  5. 5
    Meteo Aeronautica Militare
    54/100
    meteoam.it(opens in a new tab)
35
Towns
266,621
Inhabitants

Rain right now

The radar currently detects no rain over this area's municipalities

Observed data from the latest radar sweep (09:00) · Radar-DPC, Italian Civil Protection

Yesterday in Siena

Observed data for 11 October
25°
High
11°
Low
No rain

All towns in the province of Siena

Estimated most accurate service, town by town

Loading map…

3BMeteo
Meteo.it

Yesterday's report card

11 October

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

Meteo.itWinner of the day
  • Meteo.it
    Highspot onLowspot onRaincorrect
  • iLMeteo.it
    HighoffLowspot onRaincorrect
  • 3BMeteo
    HighcloseLowspot onRaincorrect
  • Meteo Aeronautica Militare
    HighcloseLowspot onRaincorrect
  • Apple Weather
    HighcloseLowspot onRaincorrect

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

Ongoing streaks

  • Meteo.it has called the rain right for 39 days in a row
  • Meteo.it has nailed the low for 5 days in a row
  • 3BMeteo has called the rain right for 4 days in a row

The weather services championship

Who leads the Siena ranking, day by day

3BMeteoCurrently leading

Neck and neck with another service

This month

  • Meteo.it
    5 days in the lead
  • Apple Weather
    2 days in the lead
  • Meteo Aeronautica Militare
    1 day in the lead

Hall of fame

  • September 2026Meteo Aeronautica Militare16 days in the lead
  • August 20263BMeteo28 days in the lead
  • July 20263BMeteo10 days in the lead
  • June 20263BMeteo14 days in the lead

Get to know Siena

Over the last two months, next-day forecasts for the Siena area had an average accuracy index of 70 out of 100 (average across all services). It is among the hardest areas to forecast in Italy: ranked 54 of 107.

Average accuracy by how far ahead the forecast is made:

  • For tomorrow
    70/100 · very reliable
  • 2 days ahead
    69/100 · fairly reliable
  • 5 days ahead
    65/100 · fairly reliable

Tip: Each town's colour is an estimate from nearby provincial capitals' data. Tap a town for the details.