Generator Bad Weather

I say No! Do not operate them in the rain or if its wet. You can get electrocuted and/or damage the genny.

All of the user manuals tell you this and its common sense. Water and electricity don't mix well.

Honda eu200i manual wrote:
The generator is a potential source of electrical shock if misused. Do
not expose the generator to moisture, rain or snow. Do not let the
generator get wet, and do not operate it with wet hands.

Champion 3100 manual wrote:

Do not operate or store the generator in rain, snow,
or wet weather.

Using a generator or electrical appliance in wet
conditions, such as rain or snow, or near a pool or
sprinkler system, or when your hands are wet, could
result in electrocution.

Be safe!