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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 - Aprilia Distance
Ciampino 22.4 km
Pratica di Mare 23.4 km
Latina 29.9 km
Rome/Urbe 42.9 km
Guidonia Montecelio 46.6 km
Fiumicino Airport 49.8 km
Vigna Di Valle 71.6 km
Frosinone 74.4 km
Ponza 80.5 km
Rieti 94.7 km
Civitavecchia 101.6 km
Monte Terminillo 103.5 km
Viterbo 113.0 km
Perugia 163.7 km
Grazzanise 169.7 km
Radicofani 172.7 km
Monte Argentario 185.0 km
Pescara 197.2 km
San Giovanni Teatino 197.6 km
Naples/Capodichino 199.5 km
Capri 207.2 km
Frontone 210.3 km
Grosseto 215.8 km
Arezzo 222.7 km
Campobasso 224.5 km
Ancona/Falconara 235.2 km
Rimini 264.7 km
Termoli 267.3 km
Salerno Costa d'Amalfi Airport 274.1 km
Monte Calamita 278.5 km
Calamita 280.3 km
Cervia 289.3 km
Florence/Peretola 289.4 km
Forlì 291.5 km
Trevico 295.1 km
Point Marina/Ravenna 313.8 km
Ustica 317.9 km
Foggia "Gino Lisa" Airport 323.4 km
Pisa 339.4 km
Amendola 343.3 km
Alistro 353.1 km
Bologna/Borgo 353.9 km
Olbia 354.9 km
Monte Cimone 356.8 km
Solenzara 361.8 km
Bastia - Poretta Airport 366.3 km
Monte Sant'Angelo 369.2 km
Ferrara 371.4 km
Capo Bellavista 371.8 km
Falcone Borsellino Airport 373.3 km
Mali Lošinj 378.9 km
Capo Pertusato 384.8 km
Pula Airport 386.9 km
Figari 393.7 km
Vieste 394.5 km
Cap Corse 394.5 km
Zadar 397.1 km
Trapani 399.0 km
Sarzana/Luni 401.8 km
Capo S. Lorenzo 404.6 km
Zadar Airport 406.9 km
Latronico 409.9 km
Palagruža 411.2 km
Komiža 415.7 km
Rab 417.8 km
Bonifati 421.9 km
Pazin 422.3 km
Padua Airport 423.9 km
Venice Marco Polo Airport 427.0 km
Prizzi 427.9 km
Ajaccio Napoleon Bonaparte Airport 428.0 km
L'Île-Rousse 429.4 km
Šibenik 432.9 km
Portorož Airport 435.9 km
Zavizan 436.6 km
Portorož 438.9 km
Parma 439.1 km
Calvi/St Catherine 440.1 km
Capo Carbonara 440.4 km
Gospić 441.9 km
Treviso 444.9 km
Sciacca 445.0 km
Senj 445.9 km
Rijeka Airport 448.4 km
Istrana 449.8 km
Rijeka 453.4 km
Hvar 457.8 km
Trieste 457.9 km
Villafranca 458.6 km
Split Airport 459.5 km
Bari/Palese Macchie 464.5 km
Ronchi Legionari 468.7 km
Marjan 470.4 km
Enna 472.0 km
Cagliari Elmas Airport 472.9 km
Decimomannu 475.6 km
City 481.0 km
Monte Scuro 484.3 km
Postojna 485.0 km
Piacenza 486.5 km