| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.39 | 3.20 | 0.19 |
| Feb | 2.62 | 2.51 | 0.11 |
| Mar | 3.81 | 3.76 | 0.05 |
| Apr | 3.76 | 3.73 | 0.03 |
| May | 3.93 | 3.95 | -0.02 |
| Jun | 4.52 | 4.79 | -0.27 |
| Jul | 4.58 | 4.69 | -0.11 |
| Aug | 4.58 | 4.42 | 0.16 |
| Sep | 4.86 | 4.70 | 0.16 |
| Oct | 4.36 | 4.18 | 0.18 |
| Nov | 3.28 | 3.19 | 0.09 |
| Dec | 3.81 | 3.74 | 0.07 |
47.50 | 46.86 | 0.64 |