Weekly Weather Report for 46375, Schererville, Indiana. Looking at the weather in 46375, Schererville, Indiana over the next 7 days, the maximum temperature will be -1℃ (or 31℉) on Friday 12 th January at around 2 am. In the same week the minimum temperature will be -17℃ (or 2℉) on Tuesday 16 th January at around 8 am.