`openweather': Weather info and forecast from openweathermap.org

This package requires you to acquire a FREE API key from
https://openweathermap.org/price and set it up with
M-x customize-variable RET openweather-api-key

  I assume this package would also work with a paid API key, but
  since I haven't paid for one I can't know for sure.  This package
  doesn't support the paid APIs, so don't pay for an API key merely
  to use this Emacs package.

Now you can run M-x openweather-at to get a one-line description
(in the minibuffer) of current weather conditions at the location
you indicate.  Locations are in the form CITY[[,STATE],COUNTRY];
you then need to use completion to finalize your choice (if you
don't see anything at the "Choose" prompt, hit TAB to initiate
completion).

The usual entry point is M-x openweather which is intended to give
you the weather at your favorite location, or one of several you
can configure.  Use M-x customize-variable RET openweather-locations
to define them.  If you haven't customized openweather-locations
but both calendar-latitude and calendar-longitude are defined,
openweather will use them.

To get more detailed weather info with a five-day forecast, give
either openweather or openweather-at a prefix argument, e.g.
C-u M-x openweather-at

We also define the aliases M-x weather and M-x weather-at, unless
they are already defined (presumably by some other weather
package).

M-x customize-group RET openweather is recommended to set some
other preferences, in particular your preferred language and units.