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Early winter · Weather & things to do

Indiana Dunes in December

Indiana Dunes cools off: highs slip to 37°F (3°C), from 49°F in November, with lows of 25°F (-4°C) and about 2.4 in (60 mm) of rain or snow.

With a comfort score of 43/100 (12th of 12), it's one of the toughest months, held back mainly by cool days.

Indiana Dunes, Indiana, United States
Avg high
37°F (3°C)
Avg low
25°F (-4°C)
Rain or snow
2.4 in (60 mm)
Humidity
86%
Cloud cover
73%
Daylight
~9 h
Comfort score
43/100 · Tough

What December feels like

Real cold sets in, with afternoon highs around 37°F (3°C).

Average lows of 25°F (-4°C) mean frosty nights and icy mornings.

About 2.4 in (60 mm) of rain or snow falls in the month, and with temperatures averaging below freezing, much of it may come as snow.

Daylight is short, roughly 9 h mid-month, so start sightseeing early.

Indiana Dunes: December compared with the months either side
NovemberDecemberJanuary
Avg high49°F9°C37°F3°C32°F0°C
Avg low34°F1°C25°F-4°C19°F-7°C
Rain/snow2.6 in65 mm2.4 in60 mm2.3 in58 mm
Daylight9 h 36 min9 h9 h 18 min
Comfort604344

Plan around December

December is one of the lower-scoring months here; the best are September.

What to pack for December

What to do in Indiana Dunes in December

With highs near 37°F, these picks lean toward food, drink and places with a roof, with outdoor options when the weather breaks.

Nearby in December

NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.

Indiana Dunes in December: quick answers

Is December a good time to visit Indiana Dunes?

It's one of the tougher months here, scoring 43/100, held back mainly by cool days. The best months are September. Expect highs of 37°F (3°C) and 2.4 in (60 mm) of rain or snow. Our Indiana & Ohio City-Nature Loop recommends May – Oct, so December is outside its suggested window.

How cold is Indiana Dunes in December?

Average highs are 37°F (3°C) and average lows 25°F (-4°C), making it the 3rd-coldest month by daytime highs, with nights below freezing on average.

Does it snow a lot in Indiana Dunes in December?

Some: about 2.4 in (60 mm) of rain or snow falls across December on average, the 3rd-driest month of the year. With temperatures this low, much of it may fall as snow. The annual total is about 38.7 in (984 mm).

What should I pack for Indiana Dunes in December?

Bring hat, gloves and thermal base layers (lows around 25°F), insulated, waterproof boots (snow is likely on some days), waterproof outer layer (about 2.4 in of rain or snow) and comfortable walking shoes (most picks involve some walking).

Planning Indiana Dunes in December?

Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.

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