| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.76 | 0.95 | -0.19 |
| Feb | 0.79 | 0.89 | -0.10 |
| Mar | 1.61 | 1.72 | -0.11 |
| Apr | 2.91 | 3.14 | -0.23 |
| May | 4.17 | 4.22 | -0.05 |
| Jun | 4.52 | 4.70 | -0.18 |
| Jul | 4.21 | 4.47 | -0.26 |
| Aug | 4.55 | 4.36 | 0.19 |
| Sep | 3.34 | 3.29 | 0.05 |
| Oct | 2.74 | 2.87 | -0.13 |
| Nov | 1.58 | 1.71 | -0.13 |
| Dec | 1.09 | 1.29 | -0.20 |
32.27 | 33.61 | -1.34 |