| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.17 | 4.28 | -0.11 |
| Feb | 4.16 | 4.21 | -0.05 |
| Mar | 4.60 | 4.58 | 0.02 |
| Apr | 3.33 | 3.42 | -0.09 |
| May | 3.22 | 3.22 | 0.00 |
| Jun | 4.25 | 4.45 | -0.20 |
| Jul | 3.88 | 4.03 | -0.15 |
| Aug | 4.27 | 4.39 | -0.12 |
| Sep | 3.68 | 3.76 | -0.08 |
| Oct | 2.94 | 3.13 | -0.19 |
| Nov | 3.48 | 3.62 | -0.14 |
| Dec | 4.53 | 4.56 | -0.03 |
46.51 | 47.65 | -1.14 |