What is the weather like in Rocky Mountain National Park vs Yellowstone National Park in December?

In December, Rocky Mountain National Park averages -2°C high / -9°C low with about 75 mm of rain; Yellowstone National Park averages -4°C high / -15°C low with about 60 mm.

Rocky Mountain National Park vs Yellowstone National Park in December

Rocky Mountain National Park is the better pick in December — 47 vs 42 on SeasonMap's comfort score. Rocky Mountain National Park is freezing, a little rain, clean air, while Yellowstone National Park is freezing, a little rain, clean air.

Rocky Mountain National Park vs Yellowstone National Park — December climate, side by side

	🇺🇸 Rocky Mountain National Park	🇺🇸 Yellowstone National Park
Comfort score	47/100 (F)	42/100 (F)
Feels-like high	-7°C	-9°C
Avg high / low	-2° / -9°	-4° / -15°
Rainfall	75 mm	60 mm
Rainy days	13	12
Humidity	68%	83%
Air quality (AQI)	44	42

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Rocky Mountain National Park 🇺🇸 United Statesfreezing, a little rain, clean air · best August47
Yellowstone National Park 🇺🇸 United Statesfreezing, a little rain, clean air · best August42

Rocky Mountain National Park vs Yellowstone National Park in December — FAQ

Is December better in Rocky Mountain National Park or Yellowstone National Park?: Rocky Mountain National Park is the better pick in December — 47 vs 42 on SeasonMap's comfort score. Rocky Mountain National Park is freezing, a little rain, clean air, while Yellowstone National Park is freezing, a little rain, clean air.
What is the weather like in Rocky Mountain National Park vs Yellowstone National Park in December?: In December, Rocky Mountain National Park averages -2°C high / -9°C low with about 75 mm of rain; Yellowstone National Park averages -4°C high / -15°C low with about 60 mm.