Here's weather in embedded C++ (for an ESP32-S3 with an ePaper screen and InkHUD and other devices supported by Meshtastic), from 3 weeks ago:

meshtastic/firmware//src/modules/weather/NWSWeatherProvider.cpp at add_weather_http_json_protobufs · westurner/firmware: https://github.com/westurner/firmware/blob/add_weather_http_...

The http://api.weather.gov HTTP API asks users to specify a unique User Agent HTTP header.