Table 3. Mean annual precipitation, and mean summer maximum and minimum temperatures, in ponderosa pine and mixed-conifer forests in each region.
| Region* | Mean annual precipitation(cm) | Mean maximum temperature,June-August (degrees C) | Mean minimum temperature,June-August (degrees C) |
| Sierra Nevada | 104 | 23 | 9 |
| Klamath | 196 | 26 | 11 |
| Eastern Cascades and Eastern Sierra Nevada | 113 | 21 | 7 |
| Northern Rockies | 88 | 22 | 6 |
| Central and Southern Rockies | 71 | 22 | 6 |
| Southwest | 58 | 27 | 11 |
*
All values are from PRISM data (http://www.prism.oregonstate.edu/normals/) in each 2 km2 PRISM pixel within which an FIA plot used in the study occurred.