Janesville Weather in December

Janesville in December sees very low daytime temperatures of 1°C (34°F) and nighttime lows of -8°C (18°F). Rainfall is fairly high this month at around 76 mm (3 in), so pack a rain jacket to stay dry.

Rainfall in Janesville in December

Typically around 12 days of snow/rainfall are expected, averaging 76 mm (3 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Janesville in December

Janesville in December gets highs of 1°C (34°F) during the day and drops to -8°C (18°F) at night. The winter season is characteristic of December. Expect a distinctly cold feel throughout the day, not just overnight. At -8°C (18°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. Prepare for a very cold month by layering your clothing. It's always better to be prepared for the cold than to face it unprotected.

Sunshine in Janesville in December

The month experiences a moderate amount of sunlight, with 107 hours of sunshine. This provides a nice balance between sunshine and clouds.

December in Janesville can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.