IPA: /ɪnˈklɛm.ənt/
KK: /ɪnˈklɛmɪnt/
This word describes weather that is harsh, stormy, or unpleasant, often involving rain, wind, or cold temperatures.
The picnic was canceled due to the inclement weather forecast.
Inclement is formed from "in-" (meaning not) and "clemens" (from Latin, meaning mild or gentle). The word describes weather that is not mild, typically harsh or severe.
Think of 'not mild' to remember that 'inclement' refers to harsh or severe weather.