It is hard to display weather forecasting in compact form especially for longer periods. Text based display would look too cluttered. Color coding looks more promising. AughtNaughtZero have shared his instructable on building 32 hour weather forecasting device on Raspberry Pi. For displaying various weather parameters he used custom 6×16 RGB LED matrix. Raspberry Pi pulls weather data from Weather Underground API using Python script.
The each of 6 rows of LED matrix is dedicated to different parameter: temperature, pressure, humidity, wind speed, chance of precipitation, and weather condition arrays. The each column of of each line is spread for 32 hours of data where each dot is color coded to represent the forecasting for two hour period. The python script uses couple libraries and code snippets to handle color LEDs and encode weather data pulled from Weather Underground. He used 8” x 10” shadow box frame to put it all together. The end result looks really intuitive and easy to follow.