Reviving this thread to say that inReach now has Weather Forecast available on your smart device.
"Get weather forecasts sent directly to your inReach or Earthmate App inReach forecasts deliver weather details directly to your inReach, giving you the information you need to make educated decisions and stay safe on your adventure. Request weather forecasts for your current location, for a specific waypoint, or by manually entering coordinates."
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Basic:
The Basic forecast includes temperature, precipitation, wind speed and direction, and atmospheric pressure details for three days in six-hour intervals. Each forecast counts as one text message against your data plan. Source: Forecast.io
Premium (Non-marine):
The Premium forecast includes temperature, precipitation, wind speed and direction, and atmospheric pressure details for seven days. The first twelve-hours are forecast in one-hour intervals, followed by intervals of increasing length for the remaining days. Each forecast costs $1 per request. Source: Forecast.io
Premium (Marine):
In addition to the details of the Premium forecast, the Marine feature also includes wave height, current, and visibility details. Each forecast costs $1 per request. Source: OCENS
Fee details
Basic: Each forecast counts as one text message against your data plan.
Premium: Each forecast costs $1 per request.
Marine: Each forecast costs $1 per request."
DeLorme inReach - Two-way satellite text messaging, tracking and SOS anywhere in the world
Herb