short-term high humidity due to rain
Above 60%, mold spores multiply and people with respiratory issues become uncomfortable. It should go back down soon with no major issues other than a slight permanent increase in the amount of musty smells in the house when all the windows are closed due to the new mold spores. Don't let it stay above 80% for extended periods of time, though. If you're bothered, run your AC or use a dehumidifier.