boolean values first
…Temperature over 91 - true
…No rain in the forecast - true
…Not raining now - true
…Later than 3PM - true for false you need to decide when before 3PM is
Monday Wednesday Friday True
All the above will need Ifftt applets to change the above to true or false
you wasn’t clear if you wanted them to be all true before it fires or just one.
If all have to be true then condition linking is simple and all ticked
If only one has to be true then if is required then all ticked and condition linking is complex "OR(Temperature over 91,No rain in the forecast,Not raining now,Later than 3PM,Monday Wednesday Friday) this is not 100% correct as it wont allow spaces.
then action chains
Hope this helps