August brings 22°C daytime highs, 42mm of precipitation across about 7 wet days and 13.8 hours of daylight — best for hiking, cycling and reliable sunshine. The strongest run of the year is July to September. December is the quietest month: cold and snow-focused, and still good for snow, cabin weekends and festive season.
Long-run climate normals for Jackson Hole. Month ratings compare months within Jackson Hole only — they are not a ranking of Jackson Hole against other destinations, and they are not a forecast for a specific year.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone. Showing .
| Best month | August — Hiking, Cycling, Reliable sunshine |
| Best 3-month window | July–September |
| Quietest month | December — Cold and snow-focused |
| Driest month | January — 9mm |
| Wettest month | May — 90mm |
| Warmest / coolest | July 24°C / January 0°C |
| Seasonality | Strongly seasonal — the months feel like different places |
| Annual rainfall | 546mm over roughly 93 rain days |
December gets roughly 57% less precipitation than August — 18mm against 42mm. That difference, more than temperature, is what changes how a day here feels.
Jackson Hole swings 24°C between July (24°C) and January (0°C) — the month you pick changes what you pack more than where you go.
June gives you 15.2 hours of daylight against just 8.8 in December — a 6-hour difference in how much you can actually fit into a day.
January is the driest month at 9mm across roughly 2 wet days, while May peaks at 90mm.
January–December sit at or below freezing, so the precipitation shown for those months falls mainly as snow rather than rain — the millimetre figures are water equivalent, not puddles.
September is almost as good as August, but usually quieter and cheaper. If your dates are flexible, it is the easier trip.
Jackson Hole changes character completely through the year — August and December are effectively two different destinations. Pick the month that matches what you want to do, not the highest-rated one.
Ratings compare months within Jackson Hole, not against destinations worldwide: five stars means the best time to be here, not that Jackson Hole beats anywhere else. Tags describe what the conditions actually suit.
| Month | Rating | High / Low | Precipitation | Wet days | Sun | Daylight | Best for |
|---|---|---|---|---|---|---|---|
| January | ★★☆☆☆ | 0°C / -12°C | 9mm (snow) | 2 | 9h | 9.1h | Cabin weekends · Reliable sunshine · Low-angle light |
| February | ★★☆☆☆ | 2°C / -11°C | 9mm (snow) | 2 | 9h | 10.2h | Cabin weekends · Reliable sunshine · Low-angle light |
| March | ★★☆☆☆ | 6°C / -6°C | 42mm (rain/snow) | 7 | 7h | 11.7h | Cabin weekends · Quiet and local |
| April | ★★☆☆☆ | 12°C / -1°C | 66mm | 11 | 6h | 13.3h | Spring greenery · Quiet and local |
| May | ★★★☆☆ | 18°C / 5°C | 90mm | 15 | 5h | 14.6h | Spring greenery |
| June | ★★★★☆ | 22°C / 9°C | 78mm | 13 | 6h | 15.2h | Hiking · Cycling |
| July | ★★★★☆ | 24°C / 10°C | 66mm | 11 | 7h | 14.9h | Hiking · Cycling |
| August | ★★★★★ | 22°C / 9°C | 42mm | 7 | 9h | 13.8h | Hiking · Cycling · Reliable sunshine |
| September | ★★★★★ | 18°C / 5°C | 42mm | 7 | 9h | 12.3h | Hiking · Cycling · Reliable sunshine |
| October | ★★★☆☆ | 12°C / -1°C | 42mm | 7 | 8h | 10.7h | Autumn colour · Low-angle light |
| November | ★★☆☆☆ | 6°C / -6°C | 42mm (rain/snow) | 7 | 7h | 9.4h | Cabin weekends · Low-angle light · Quiet and local |
| December | ★★☆☆☆ | 2°C / -11°C | 18mm (snow) | 4 | 8h | 8.8h | Snow · Cabin weekends · Festive season |
| You are planning | Pick | Why |
|---|---|---|
| Sun & beach days | August | 9h daily sunshine, 22°C highs and only 7 rain days. |
| City walking & sightseeing | August | 22°C highs with 13.8h of daylight — long days without heat fatigue. |
| Photography & light | February | 9h of sun and 10.2h daylight give the widest window for golden-hour work. |
| Value & fewer crowds | June | Scores 67/100 — close to peak conditions but outside the busiest window. |
| Cooler-weather travel | September | 18°C highs and 5°C nights suit anyone who dislikes heat. |
Each month in Jackson Hole is described from long-run climate normals and then rated relative to the other eleven months in the same city. A five-star January in a cold destination means January is one of the best times to be there — not that it beats a Mediterranean summer.
| Factor | Weight | What it measures |
|---|---|---|
| Temperature | Described | Average daytime high and overnight low for the month, shown as measured rather than judged. |
| Precipitation | Described | Monthly millimetres and wet-day count, labelled as snow or rain/snow where temperatures make that the likely phase. |
| Sunshine & daylight | Described | Average daily sunshine hours and astronomical daylight length at mid-month, from the city’s latitude. |
| “Best for” tags | Derived | Applied only when the conditions genuinely support the activity — snow depth-friendly cold for skiing, 13–24°C and low rain risk for hiking, dark evenings at high latitude for aurora. A month with few strong use cases gets fewer tags rather than padded ones. |
| Star rating | Relative | Ranks the month against the other eleven months in the same city. Never a comparison between cities. |
Figures are long-run climate averages, not a forecast for a specific year. This city has no published month-by-month normals on file, so monthly temperatures are interpolated from its summer and winter averages and rainfall is modelled from rain-day frequency.
August is the best all-round month in Jackson Hole: 22°C highs, 42mm of precipitation and 13.8 hours of daylight, which suits hiking, cycling and reliable sunshine. The strongest three-month window is July to September.
December — 2°C highs, 18mm of precipitation over roughly 4 days and 8.8 hours of daylight. It is the cheapest and least crowded time to go, and it still works for snow, cabin weekends and festive season.
January is the driest month at 9mm over about 2 rain days, against 90mm in May. Across the year Jackson Hole records around 546mm.
Yes, but the months are genuinely different trips. August suits hiking, cycling and reliable sunshine, while December suits snow, cabin weekends and festive season. Pick the month that matches what you want to do.
Daylight ranges from 8.8 hours in December to 15.2 hours in June, calculated from the city's latitude.