
Rock Creek Wilderness
- Annual mean
- 10.5 °C
- Warmest month
- August
- Wettest month
- December
Long-term temperature, precipitation, humidity, wind, and daylight averages at a representative coordinate.
Annual climate cycles for Oregon Dunes National Recreation Area based on NASA POWER measurements collected from 1991 to 2020. This data provides a detailed profile of long-term temperature, precipitation, humidity, wind, and daylight variations across twelve months. Values represent climatology at a single point and offer a clear understanding of atmospheric patterns throughout the calendar year.

Long-term monthly temperature averages and daily precipitation rates across twelve calendar months
Track long-term monthly temperature bounds, average daily precipitation, and calculated daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 8.4 °C2.2° to 13.8° | 7 mm/day | 87.3% | 5.1 m/s | 9.2 hours |
| February | 8.5 °C2.5° to 14.6° | 5.9 mm/day | 85.9% | 4.8 m/s | 10.3 hours |
| March | 9 °C3.7° to 15.7° | 5.4 mm/day | 84.8% | 4.7 m/s | 11.7 hours |
| April | 9.9 °C5.1° to 17.4° | 3.8 mm/day | 84% | 4.5 m/s | 13.2 hours |
| May | 11.8 °C7° to 19.2° | 2.2 mm/day | 84.6% | 4.2 m/s | 14.5 hours |
| June | 13.7 °C9.5° to 20.5° | 1.2 mm/day | 84.7% | 4.2 m/s | 15.2 hours |
| July | 15.2 °C11° to 21.6° | 0.3 mm/day | 84.7% | 4.2 m/s | 14.9 hours |
| August | 15.6 °C11.3° to 22.5° | 0.4 mm/day | 84.7% | 3.9 m/s | 13.8 hours |
| September | 15.1 °C9.9° to 24.1° | 1.3 mm/day | 82.8% | 3.8 m/s | 12.3 hours |
| October | 12.8 °C6.4° to 21.2° | 3.2 mm/day | 83.2% | 4.2 m/s | 10.7 hours |
| November | 10.3 °C3.4° to 16.6° | 6.9 mm/day | 85.5% | 4.8 m/s | 9.4 hours |
| December | 8.4 °C1.9° to 14° | 8.2 mm/day | 86.6% | 5.3 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.
Comparing long-term averages for temperature, precipitation, wind, humidity, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Analyze monthly temperature, precipitation, wind, and daylight rhythms across diverse protected landscapes








Uncover the scale of the largest temperate coastal dune system in North America through MoriAtlas. Examine how wind and water define the terrain, from massive sand ridges to secluded interdunal lakes, across this protected region of the Oregon coastline.