The highest day temperature in January 2025 was 42°F. The lowest night temperature was -4°F. The average values for day and night temperatures during January were 24.3°F и 17.6°F respectivly.

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation total in January for Indianapolis is 1.4 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 8.3 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Indianapolis in January is 3.7 hours.