A python script to send an email if frost is expected in the next 24 hours at a specified location. Originally intended to warn me to bring in frost tender plants.
This program requires API keys for the OpenWeatherMap API and the MetOffice Datapoint API. These are accessed in python using the pyowm and datapoint modules.
The email is sent using smtplib and email, both part of the python standard library.
The configuration is done in config.py. A skeleton file is provided. Some of the information in config.py is secret, including the password for the email service used.
The variables in config.py are:
OWM_API_KEY: The API key for OpenWeatherMap.DATAPOINT_API_KEY: The API key for datapoint.MAIL_HOST: The smtp server to connect to.MAIL_PORT: The port to use to connect to the smtp server.MAIL_USER: The username to use to login to the smtp server.MAIL_PASSWD: The password to use to login to the smtp server.MAIL_TO: The email address(es) to send the alert to.MAIL_FROM: The email address to set in the 'from' field of the email header.OWM_COORDS: The coordinates to use for the weather report from OpenWeatherMap.MET_COORDS: The coordinates to use for the weather report from datapoint.
When run, the script will send an email to the specified address(es) if either of the weather services reports a temperature below 3 degrees within the next 24 hours. It could be run every day in cron or similar.