Sounds like there is a lot of moisture in the air. It can short your PC or damage other parts, specially if it leaks/sips inside the case...
"Condensation forms when there is a big change in temperature. Humidity in the air starts to condense onto computer surfaces. This can cause short circuiting that will ruin the computer. "
Did you know that heat and humidity can have unexpected effects on computers? Discover 4 risks your computer might be facing from Anytime HVAC experts.
www.anytimehvac.com
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Make sure you clean it and dry up everything properly. Keep a check on it for some time until the weather changes.