May in Grand Teton National Park is a good month: highs around 60°F, lows around 32°F. Crowds: moderate — #5 busiest of the park's 12 months. Lower trails (Taggart Lake, String Lake) melt out; the high passes are still snow-covered. The editorial best window here is July & September.
| Verdict | Good A solid visit with a caveat — usually crowds or heat. |
|---|---|
| Temps °F | 60° high / 32° low |
| Crowds | moderate · #5 busiest of the park's 12 months |
| What May is like | Lower trails (Taggart Lake, String Lake) melt out; the high passes are still snow-covered |
| Best window (whole year) | July & September |
| Peak crowds (whole year) | Jul–Aug |
CROWDS: RELATIVE SEASONALITY FROM NPS VISITATION STATISTICS · TEMPS: APPROXIMATE NOAA NORMALS AT MAIN VISITOR ELEVATION — HIGH COUNTRY RUNS 10–20°F COLDER
Grand Teton National Park in June — Good, highs around 70°F, crowds: busy (long days and early wildflowers, but paintbrush divide and other high passes often hold snow into july).
Our verdict for May is "Good". A solid visit with a caveat — usually crowds or heat. Expect highs around 60°F and lows around 32°F, with crowds at the "moderate" level. Temperatures are approximate NOAA normals at the main visitor elevation; crowd levels follow published NPS visitation statistics.
Across the full 12-month review, the best window is July & September, and the peak-crowd months are Jul–Aug. May itself we rate "Good".
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