- Chilly Weather
- China Air Quality Forecast - PM2.5 smog daily and hourly trend
- China Real-Time Weather
- Chipmunk
- Chirp - Cricket Thermometer
- Christmas FotoCollage
- Cittadino Informato
- City Weather Forecasts
- Civil Twilight Calculator
- Civil Twilight for Watch
- ClassicWeather
- ClassicWeather HD
- Clean Air Make More
- Clear Outside
- Clear Sky
- Clear Sky: Weather
- Cleveland Airport(CLE) + Radar
- Clima Pesca
- Clima Weather Report - Weather Tracker for Local Weather, Weather Conditions, and Precipitation
- ClimApp
- ClimApp
- Climat HD
- Climate - Weather Averages
- Climate Viewer
- Climate-Speed,Maps
- Climatempo - Meteorologia
- Clime: Weather Radar Live
- Climee
- Clock and Local Weather Forecast-Free
- Clock n Local Forecast-Free
- Clock-X
- Clockr
- CloudSpotter – See the Sky with New Eyes and Discover the Fantastic World of Clouds
- CloudWatcher
- CloudySky
- CNY Central
- CNY Central Weather
- Coastal Observer | SPOTTERON
- CoastalWatch
- Coat Check: Weather Forecast
- Cobra Ribs
- CodeRED Mobile Alert
- Coffee Break
- Cold Correct
- ColdAltitude 2
- Colorado Snow Map & Webcams
- ColorfulClouds Lite
- Coloring Your Xmas
- Columbia Weather Systems
- CONAGUAClima
- Constant WX Brief
- CONTINGENCIES
- Control de Heladas
- Cool & Calm - Simple Weather
- Cool Forecast Clock-Free
- Cool or hot today?
- Cool Weather
- Copernicus ECMWF Events