I’m willing to bet 90% or more of the online weather services and apps, including those mentioned above, are using NOAA/NWS data. I’d rather bypass someone’s interpretation of that data and get the information direct from the source, I’ve found it’s more accurate. To get an backcountry forecast simply tap the map that’s shown on the NOAA site for the area in question and NOAA will provide a forecast for that region (this was mentioned above). It’s not shown in the picture but immediately below the map, you can scroll down and the elevation and other information is provided.
https://forecast.weather.gov/MapClick.php?lat=40.7274&lon=-115.4805
Forecast for a small town near the Ruby Mountains in Nevada:
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Clicked on the top of the range (see the pin has moved) and a mountain forecast is provided:
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