What you ask is tricky. Removal of the 'blow' of the wind from the sound can be a hit and miss process.
All I can suggest is that you play around with the sounds EQ settings, and you might get lucky. In failing that, you can try one of the many audio filters that are available in FCP.
I suggest that you try the '3 band equaliser' pass filter first. Select the sound channels and then select "Effects > Audio Filters" and then select the one you want.
To access the controls of this filter, you need to select the 'Filter' tab in the Viewer window. Then it's just a matter of moving the sliders to find the best combination for your needs.
See screenshot for further help...