Ready-made plans

Custom planning is temporarily unavailable for this route. Ready-made plans are still available.

Best Time for Yellowstone & Grand Teton

Last updated: 2026-09-14

Preferred months for this journey: June, July, August, September. Check the seasonal notes before choosing your dates.

The standard driving loop is supported from June only after you confirm that Yellowstone and Grand Teton roads, trailheads and planned facilities are open. Snow, construction and wildlife closures can still change access.
The strongest month-level driving window. Wildfire, smoke, early snow, road works and wildlife management can still close roads or sites, so check both parks before departure and daily.
This self-drive loop is not generated from October through May. Most Yellowstone roads close to ordinary cars in winter, and May and October road access varies by exact date and weather; those trips need a dated, freshly checked product.

Month	Low	High	Rain	Daylight
January	−16.9°C	−6.3°C	77 mm	9.1 h	❄
February	−16.3°C	−5.3°C	68 mm	10.2 h	❄
March	−11.4°C	−1.3°C	70 mm	11.6 h	❄
April	−6.7°C	3.5°C	74 mm	13.2 h	❄
May	−1.1°C	10.8°C	73 mm	14.6 h	❄
June	3.4°C	17.2°C	62 mm	15.3 h
July	8.4°C	23.6°C	32 mm	15.0 h
August	7.2°C	22.8°C	36 mm	13.9 h
September	2.1°C	16.9°C	49 mm	12.3 h
October	−4.3°C	7.3°C	63 mm	10.8 h	❄
November	−11.0°C	−1.0°C	72 mm	9.4 h	❄
December	−16.8°C	−6.7°C	85 mm	8.7 h	❄