This is a variant of the Fair Weather watch, and has a different display for wind, moon phase, and omits less-used metrics such as cloud cover. It tries to address the main drawback of small fonts used on the Fair Weather watch.
As with Fair Weather, httPebble is required, and there are customizations for units and display. See the httPebble online documentation if you have trouble connecting. (Note: some folks mention that Pebbler support for httPebble protocol produces buffer overflow issues.)
You can customize the units (temperature, wind, air pressure), date format, and screen background at http://SetPebble.com.
The weather conditions are from OpenWeatherMap.org; check that website first for accuracy if you experience incorrect weather readings.
1.3: Updated for Pebble firmware 1.13
1.4: Updated for Pebble firmware 1.14.1