Weather on Apple Watch does not match weather on iPhone

The weather on my Apple Watch series 6, specifically the chance or rain, does not remotely match the chance or rain on my iPhone.

Both apps are set to use current location. Here's a comparison

On the watch - 20% chance of rain

On the phone - currently heavy rain and 90% chance or rain

This behavior is fairly consistent. Temperature and condition data match, but not the precipitation.

Thanks