Little Missouri National Grassland
- Annual mean
- 7.1 °C
- Warmest month
- July
- Wettest month
- June
Tracking annual patterns in temperature, precipitation, wind, and daylight for North Dakota park terrain
The climate profile for Theodore Roosevelt National Park presents twelve months of long term atmospheric records derived from a representative station coordinate. These measurements cover temperature, precipitation, humidity, wind speed, and daylight duration averaged over the 1991 to 2020 period. The data provides a foundational understanding of the annual environmental rhythm at this specific North Dakota location rather than current weather or park-wide conditions.
Tracking thirty years of monthly temperature averages and average daily precipitation across the calendar year.
Evaluating baseline climate normals through seasonal temperature bounds, daily precipitation, and daylight
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -7.5 °C-24.5° to 7.8° | 0.4 mm/day | 82.4% | 5.7 m/s | 8.8 hours |
| February | -5.3 °C-20.7° to 12.2° | 0.4 mm/day | 76% | 5.5 m/s | 10 hours |
| March | 0.4 °C-15.4° to 19.8° | 0.7 mm/day | 67.3% | 5.7 m/s | 11.7 hours |
| April | 6.1 °C-8° to 25.4° | 1.3 mm/day | 60.6% | 5.6 m/s | 13.4 hours |
| May | 12.9 °C-1.7° to 30.2° | 2.2 mm/day | 57.5% | 5.4 m/s | 14.9 hours |
| June | 18.7 °C6.1° to 35° | 2.5 mm/day | 56.6% | 5.1 m/s | 15.6 hours |
| July | 22.8 °C10.5° to 37.6° | 1.9 mm/day | 51.7% | 4.6 m/s | 15.3 hours |
| August | 21.7 °C8.8° to 36.8° | 1.4 mm/day | 51.1% | 4.7 m/s | 14 hours |
| September | 15.4 °C1.1° to 33.9° | 1.4 mm/day | 54.6% | 5.1 m/s | 12.3 hours |
| October | 6.9 °C-6.9° to 26.7° | 1 mm/day | 63.6% | 5.6 m/s | 10.6 hours |
| November | -0.6 °C-13.7° to 16° | 0.5 mm/day | 73.2% | 5.5 m/s | 9.1 hours |
| December | -5.8 °C-20.8° to 7.9° | 0.4 mm/day | 80.5% | 5.6 m/s | 8.4 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.
Analyzing calculated historical averages for temperature, precipitation, humidity, and wind.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Study month by month atmospheric patterns and seasonal variations across diverse regional landscapes

Deepen your understanding of Theodore Roosevelt National Park by continuing your exploration into its specific mapped features and regional geographic significance. This focused entry provides essential context for appreciating the park's role as a protected landscape. Discover how this national park contributes to the atlas of protected areas, offering rich geographic data and insights into North Dakota's natural terrain.