Italy's Mario Balotelli (L) celebrates his goal against England with teammate Marco Verratti during their 2014 World Cup Group D soccer match at the Amazonia arena in Manaus June 14, 2014 (Photo: Reuters)
Incessant rain in Milan in recent days had prompted fears that Sunday's Group H clash, scheduled for 1945 GMT, would have to be postponed.
However Milan awoke to blazing sunshine on Sunday morning and an FIGC spokesman, Paolo Corbi, told AFP: "There are no fears over the game. It will go ahead as scheduled."
Croatia coach Niko Kovac had sparked fears over the staging of the game after his players completed a brief training session on a watery San Siro pitch on Saturday afternoon.
He told reporters: "If the pitch stays like this, the game can't go ahead. The ball doesn't bounce, it would be like a game of waterpolo."
FIGC spokesman Corbi admitted the pitch is "likely to be a little heavy", but he said: "There are no major problems. It is a sunny day today and the pitch will be ready in time for tonight's game."
Italy have won their opening three qualifiers but sit second in Group H behind Croatia on goal difference.
Italy's last victory over Croatia came months before the country entered World War II - when Vittorio Pozzo's side ran out 4-0 winners at Genoa's Luigi Ferraris stadium in April 1942.
In their six meetings since then, Croatia have won three and drawn three against Italy.
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