Nico Rosberg maintained the momentum from practice to qualify fifth for Williams' 500th race start at the Autodromo Nazionale di Monza.
Rosberg, who was third fastest in the final practice session this morning, mastered the challenging wet weather conditions to equal his best qualifying performance of the year.
Nico is now looking forward to the race on Sunday and reckons he should do well in front of the Italian crowd whether it is wet or dry.
"I am really pleased with the result today. It was a good qualifying session and I was consistently able to be at the front and, despite the conditions, I felt comfortable in the car," he stated.
"On top of this, we didn't compromise too much for qualifying and we have a good strategy plan for the race.
"As tomorrow goes, I would rather we didn't have as much rain as we did today as it was pretty dangerous in terms of aquaplaning.
"Ultimately, I don't mind if it is dry or wet tomorrow as long as the amount of rain is reasonable as I have the benefit of a good start position."
Williams technical director Sam Michael meanwhile hailed Rosberg's performance – although he made no mention of Kazuki Nakajima, who went out in Q1 in the sister car and will start 18th.
"It was an exciting session, the kind of which we don't see too often and these conditions pay dividends for teams that can think on their feet. We now have quite a mixed grid with cars out of position from where they would normally be, so the race on Sunday is going to be interesting. Nico did a great job in all three qualifying sessions and is well prepared for a strong race tomorrow," he added.