Weather in Indianapolis in February 2018. Expect 4°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Indianapolis in February. Check more long-term weather averages for Indianapolis in February before you book your next holiday to Indiana in 2018. 1  Indianapolis weather overview. 2  Indianapolis monthly weather. 3  Indianapolis 5-day forecast. 4  Indiana holidays. 5  Indiana map. 6  More destinations. 7  Back to Indiana.