
Grand Teton National Park
- Annual mean
- 0.2 °C
- Warmest month
- July
- Wettest month
- December
Twelve-month representative climate profiles for temperature, precipitation, and daylight hours
Climate data for Jedediah Smith Wilderness tracks twelve-month trends using NASA POWER measurements from 1991 to 2020 at a specific representative coordinate. Records include monthly mean, minimum, and maximum temperatures alongside average daily precipitation, relative humidity, wind speed, and daylight duration. These long-term averages provide a quantitative look at atmospheric variability within the park throughout the calendar year.

Long-term monthly temperature cycles and average daily precipitation records for a representative coordinate
Compare average temperature bounds, daily precipitation rates, humidity, wind speed, and daylight hours across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -11.9 °C-27.1° to -0.6° | 2.7 mm/day | 97% | 2.6 m/s | 9.1 hours |
| February | -10.7 °C-26.8° to -0.2° | 2.5 mm/day | 97.7% | 2.7 m/s | 10.2 hours |
| March | -6.9 °C-23.1° to 1.8° | 2.3 mm/day | 96.2% | 2.6 m/s | 11.7 hours |
| April | -2.3 °C-16.3° to 9.9° | 2.4 mm/day | 86.5% | 2.5 m/s | 13.3 hours |
| May | 4.4 °C-8° to 18° | 2.5 mm/day | 74% | 2.4 m/s | 14.6 hours |
| June | 9.5 °C-3.5° to 23° | 2.1 mm/day | 67.3% | 2.5 m/s | 15.3 hours |
| July | 14.7 °C2° to 27° | 1.1 mm/day | 56.7% | 2.3 m/s | 14.9 hours |
| August | 14.3 °C1° to 27.1° | 1.1 mm/day | 50.3% | 2.3 m/s | 13.8 hours |
| September | 8.9 °C-4.6° to 24° | 1.5 mm/day | 55.2% | 2.4 m/s | 12.3 hours |
| October | 1.2 °C-12.4° to 17.1° | 1.9 mm/day | 68.8% | 2.4 m/s | 10.7 hours |
| November | -6.7 °C-22.5° to 6.8° | 2.5 mm/day | 87.6% | 2.5 m/s | 9.4 hours |
| December | -12 °C-28.3° to -0.3° | 2.9 mm/day | 96.7% | 2.6 m/s | 8.8 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Evaluating long-term averages for temperature, precipitation, humidity, wind, and daylight duration.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Analyze long-term monthly normals across diverse regional protected landscapes







Continue your geographic research into the Jedediah Smith Wilderness through the MoriAtlas database. Gain insights into the glacial landforms, subalpine ecosystems, and wilderness boundaries that define this vital section of the Teton Range and the Greater Yellowstone Ecosystem.