World

North America



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 - Claremont Distance
Brackett Field 7.4 km
Chino Airport 11.6 km
Ontario Intl. Airport 13.2 km
Corona Airport 16.5 km
Grey Butte Field Airport 24.7 km
John Wayne Airport 27.3 km
Riverside Airport 30.7 km
Fullerton Airport 32.1 km
San Gabriel Valley Airport 35.3 km
Joint Forces Training Base 40.7 km
Southern California Logistics Airport 44.7 km
Edwards Air Force Base 45.5 km
Edwards 49.0 km
Palmdale Regional Airport 49.1 km
Long Beach Airport 50.4 km
March Air Reserve Base 53.0 km
San Bernardino Intl. Airport 53.6 km
Downtown Los Angeles 57.6 km
Marine Corps Air Station Camp Pendleton 58.0 km
Oceanside Airport 61.1 km
Fallbrook Airport 64.5 km
General William J. Fox Airfield 65.2 km
McClellan- Palomar Airport 69.3 km
Hawthorne Airport 69.5 km
Mojave Air and Space Port Airport 69.5 km
Zamperini Field 70.6 km
Burbank 70.7 km
Murrieta Hot Springs 70.8 km
Los Angeles Intl. Airport 75.1 km
Whiteman Airport 78.4 km
Santa Monica Airport 81.7 km
Naval Air Weapons Station China Lake 82.0 km
Catalina Airport 84.4 km
Van Nuys Airport 85.6 km
Naval Air Station North Island 90.9 km
Montgomery-Gibbs Executive Airport 92.4 km
Marine Corps Air Station Miramar 92.6 km
San Diego Intl. Airport 93.1 km
Big Bear Airport 96.2 km
Tehachapi Airport 97.0 km
Naval Outlying Landing Field Imperial Beach 103.1 km
Ramona Airport 104.4 km
Gillespie Field Airport 105.7 km
Barstow-Daggett Airport 110.7 km
San Clemente Island Airport 112.3 km
Brown Field Airport 113.2 km
Tijuana Airport 115.1 km
Sandberg Airport 118.2 km
Bicycle Lake Army Airfield 135.0 km
Palm Springs Intl. Airport 136.1 km
Camarillo Airport 153.2 km
Naval Air Station Point Mugu 155.8 km
Campo 158.2 km
Meadows Field Airport 164.3 km
Oxnard Airport 165.2 km
Twentynine Palms Airport 173.3 km
Jacqueline Cochran Regional Airport 174.1 km
Porterville Airport 181.3 km
Eastern Sierra Regional Airport 185.6 km
Naval Outlying Landing Field San Nicolas 198.4 km
Tonopah Airport 214.2 km
Visalia Airport 221.4 km
Mammoth Yosemite Airport 223.9 km
Mercury/Desert Rock 227.7 km
Naval Air Facility El Centro 235.3 km
Santa Barbara Airport 236.3 km
Hanford Airport 242.3 km
Imperial County AP 245.7 km
Hawthorne Industrial Airport 254.9 km
Creech Air Force Base Airport 259.2 km
Santa Ynez Airport 264.0 km
Fresno Yosemite Intl. Airport 264.4 km
Naval Air Station Lemoore 276.0 km
Mexicali (IAP) 286.1 km
Nuevo León 293.2 km
North Las Vegas Airport 299.1 km
Harry Reid Intl. Airport 300.4 km
Henderson Executive Airport 302.0 km
Santa Maria Public Airport 307.3 km
Lompoc Airport 307.7 km
Madera Airport 308.5 km
Nellis Air Force Base 316.7 km
Vandenberg Space Force Base 320.9 km
Boulder City Airport 330.6 km
San Luis Obispo County Regional Airport 331.4 km
Blythe Airport 334.8 km
Paso Robles Airport 335.6 km
Needles Airport 346.6 km
San Felipe 353.0 km
Yuma Intl. Airport 353.4 km
Yuma Intl. Airport 353.4 km
Laughlin/Bullhead Intl. Airport 355.3 km
Merced Regional Airport 356.1 km
Lake Tahoe Airport 361.5 km
Castle Airport 363.7 km
Columbia Airport 367.8 km
Lake Havasu City Airport 374.6 km
Modesto 408.1 km
Placerville Airport 421.1 km
Kingman Airport 423.1 km