Diplomats are useful only in fair weather. As soon as it rains they drown in every drop. Charles de Gaulle
Don't pray when it rains if you don't pray when the sun shines. Satchel Paige
And when it rains on your parade, look up rather than down. Without the rain, there would be no rainbow. G. K. Chesterton
Whether it rains or stops raining, the lentils have two eyes. Ethiopian Proverb
He who in under cover when it rains is a great fool if he stirs. Italian Proverb
Prepare the umbrella before it rains. Malay Proverb