| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.07 | 4.25 | -0.18 |
| Feb | 3.22 | 3.29 | -0.07 |
| Mar | 3.60 | 3.79 | -0.19 |
| Apr | 3.63 | 3.81 | -0.18 |
| May | 4.63 | 4.62 | 0.01 |
| Jun | 4.76 | 4.91 | -0.15 |
| Jul | 3.13 | 3.05 | 0.08 |
| Aug | 3.58 | 3.91 | -0.33 |
| Sep | 3.91 | 4.07 | -0.16 |
| Oct | 4.85 | 4.79 | 0.06 |
| Nov | 4.28 | 4.60 | -0.32 |
| Dec | 4.27 | 4.41 | -0.14 |
47.93 | 49.50 | -1.57 |