Maybe a clarification of exactly what Metars, Asos.Awos and ATIS (and a weather Forecast) will help here .
Each is very different to one another, and it shoud be clear. when getting weather information , which one of these one wants, and which one one is getting.
Metar:
(Historic)
METAR is a format for reporting weather information. A METAR weather report is predominantly used by aircraft pilots, and by meteorologists, who use aggregated METAR information to assist in weather forecasting.
METARs typically come from airports or permanent weather observation stations. Reports are generated once an hour or half-hour at most stations, but if conditions change significantly at a staffed location, a report known as a special (SPECI) may be issued.
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Asos/Awos:
(Current - Live)
Airport weather stations are automated sensor suites which are designed to serve aviation and meteorological operations, weather forecasting and climatology. Automated airport weather stations have become part of the backbone of weather observing in the United States and Canada and are becoming increasingly more prevalent worldwide due to their efficiency and cost-savings.
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ATIS:
Automatic terminal information service, or ATIS, is a continuous broadcast of recorded aeronautical information in busier terminal areas, i.e. airports and their immediate surroundings. ATIS broadcasts contain essential information, such as current weather information, active runways, available approaches, and any other information required by the pilots, such as important NOTAMs. Pilots usually listen to an available ATIS broadcast before contacting the local control unit, which reduces the controllers’ workload and relieves frequency congestion.
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Weather Forecast:
(Past - Present -Future)
Weather forecasting is the application of science and technology to predict the conditions of the atmosphere for a given location and time.