It's sort of okay (but not amazing) with

  w3m -4 -dump https://brolly.sh/forecast/RWFP2qW8
Ideally, you would let someone set an Accept: content type of text/plain, or else have an endpoint like brolly.sh/forecast/RWFP2qW8.txt

This is US only via the finger protocol (using netcat):

printf 'weather:85334\r\n' | nc bbs.airandwave.net 79

More info:

printf 'weather\r\n' | nc bbs.airandwave.net 79