Climate almanac
Harlan
Iowa, United States · 41.65°, -95.33°
What is the weather like in Harlan in December?
In December, Harlan is typically 38°F (3°C) during the day and 22°F (-6°C) at night. The month brings about 1.5 in (37 mm) of precipitation in total. Snowfall averages about 3.9 in (98 mm) over the month.
- Average high38°F (3°C)
- Average low22°F (-6°C)
- Precipitation1.5 in (37 mm)
- Clear or mostly clear days10
- Snowfall3.9 in (98 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)