Yellowstone National Park weather by month
The best time to visit Yellowstone National Park, United States is August. Pick a month for full climate normals and a verdict.
- Januaryfreezing, a little rain, clean air43tier F
- Februaryfreezing, a little rain, clean air40tier F
- Marchfreezing, a little rain, very humid56tier D
- Aprilfreezing, a little rain, reliable snow65tier C
- Maycold, a little rain, very humid76tier B
- Junecool, a little rain83tier A
- Julynice, dry90tier S
- Augustnice, a little rain, clean air93tier S
- Septembercool, a little rain, clean air86tier A
- Octobercold, a little rain, clean air72tier B
- Novemberfreezing, a little rain, clean air53tier D
- Decemberfreezing, a little rain, clean air37tier F