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What are the sources for WeatherOnline forecasts?


The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?


A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?


The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?


The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.


Nearby Weather Stations - Ciampino Distance
Ciampino 0.0 km
Rome/Urbe 20.7 km
Pratica di Mare 22.1 km
Guidonia Montecelio 28.9 km
Fiumicino Airport 38.4 km
Latina 43.4 km
Vigna Di Valle 52.5 km
Rieti 75.9 km
Frosinone 81.4 km
Monte Terminillo 86.5 km
Civitavecchia 87.8 km
Viterbo 92.3 km
Ponza 102.6 km
Perugia 141.6 km
Radicofani 151.8 km
Monte Argentario 170.5 km
Grazzanise 183.2 km
Frontone 189.0 km
Pescara 193.2 km
San Giovanni Teatino 193.9 km
Grosseto 199.0 km
Arezzo 200.5 km
Naples/Capodichino 213.6 km
Ancona/Falconara 217.2 km
Capri 224.1 km
Campobasso 231.3 km
Rimini 243.0 km
Monte Calamita 264.2 km
Calamita 266.1 km
Cervia 267.1 km
Florence/Peretola 268.3 km
Forlì 269.0 km
Termoli 270.0 km
Salerno Costa d'Amalfi Airport 288.1 km
Point Marina/Ravenna 291.6 km
Trevico 305.5 km
Pisa 320.8 km
Foggia "Gino Lisa" Airport 330.7 km
Bologna/Borgo 331.8 km
Monte Cimone 336.2 km
Ustica 340.3 km
Alistro 343.6 km
Ferrara 349.0 km
Amendola 349.8 km
Solenzara 354.7 km
Olbia 354.8 km
Bastia - Poretta Airport 355.2 km
Mali Lošinj 364.1 km
Pula Airport 369.2 km
Monte Sant'Angelo 374.6 km
Capo Bellavista 378.2 km
Capo Pertusato 381.2 km
Cap Corse 381.3 km
Sarzana/Luni 383.1 km
Zadar 386.7 km
Figari 389.2 km
Falcone Borsellino Airport 395.6 km
Zadar Airport 397.1 km
Vieste 398.8 km
Padua Airport 401.5 km
Rab 403.6 km
Pazin 404.1 km
Venice Marco Polo Airport 404.9 km
Palagruža 412.7 km
Capo S. Lorenzo 412.8 km
Komiža 413.2 km
Portorož Airport 416.5 km
Parma 418.4 km
L'Île-Rousse 418.6 km
Portorož 419.3 km
Trapani 420.6 km
Ajaccio Napoleon Bonaparte Airport 421.1 km
Treviso 422.8 km
Zavizan 423.0 km
Latronico 423.9 km
Šibenik 426.5 km
Istrana 427.5 km
Calvi/St Catherine 430.0 km
Gospić 430.5 km
Senj 431.5 km
Rijeka Airport 432.4 km
Villafranca 436.6 km
Rijeka 436.8 km
Bonifati 438.0 km
Trieste 438.8 km
Ronchi Legionari 448.7 km
Capo Carbonara 449.9 km
Prizzi 450.3 km
Split Airport 455.1 km
Hvar 455.5 km
City 461.4 km
Marjan 466.4 km
Piacenza 466.6 km
Postojna 467.0 km
Sciacca 467.3 km
Brescia Airport 470.2 km
Parg 471.0 km
Bari/Palese Macchie 472.7 km
Ghedi Air Base 474.3 km
Ogulin 478.2 km