| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.10 | 0.93 | 0.17 |
| Feb | 0.85 | 0.74 | 0.11 |
| Mar | 1.10 | 1.08 | 0.02 |
| Apr | 1.74 | 1.77 | -0.03 |
| May | 3.09 | 3.14 | -0.05 |
| Jun | 3.99 | 4.15 | -0.16 |
| Jul | 3.85 | 3.94 | -0.09 |
| Aug | 3.20 | 3.18 | 0.02 |
| Sep | 3.30 | 3.58 | -0.28 |
| Oct | 2.60 | 2.46 | 0.14 |
| Nov | 1.54 | 1.60 | -0.06 |
| Dec | 1.21 | 1.14 | 0.07 |
27.57 | 27.71 | -0.14 |