| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.17 | 3.01 | 0.16 |
| Feb | 2.69 | 2.58 | 0.11 |
| Mar | 3.57 | 3.38 | 0.19 |
| Apr | 3.67 | 3.56 | 0.11 |
| May | 4.23 | 4.22 | 0.01 |
| Jun | 4.14 | 3.94 | 0.20 |
| Jul | 3.97 | 3.77 | 0.20 |
| Aug | 3.57 | 3.30 | 0.27 |
| Sep | 3.68 | 3.71 | -0.03 |
| Oct | 2.95 | 2.95 | 0.00 |
| Nov | 2.84 | 2.78 | 0.06 |
| Dec | 3.15 | 3.12 | 0.03 |
41.63 | 40.32 | 1.31 |