I had business in Canberra a few months ago and I grabbed a couple spare hours to do some bird photography. I chose the bird-abundant National Botanic Gardens. But alas it was late in the day, dark and raining. But knowing how I could push my ISO into the “danger zone” and still be able to repair the damage (ie, the noise) later – I gave it a go. A couple good results proved the point: don’t let bad weather prevent your photography attempts.
The other important tip is this: even if you’re hand-holding, as long as you’re using flash, you’ll get super sharp results. And they’ll be aesthetic as well. And colourful! You’d never guess all these photos were shot in steady rain, would you?