The roof on Centre Court, however, was closed to allow play to start.
Thirty matches had already been held over from the night before leaving 62 singles ties to be completed on Wednesday.
Despite the grim forecast for the rest of the day, at least three matches were guaranteed to be completed on Centre Court.
Agnieszka Radwanska, the Polish third seed, was getting action under way against Ukraine's Kateryna Kozlova.
That was to be followed by defending champion Novak Djokovic facing Adrian Mannarino of France and Roger Federer's clash with world number 772 Marcus Willis.