| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.71 | 3.49 | 0.22 |
| Feb | 3.27 | 3.08 | 0.19 |
| Mar | 4.06 | 3.93 | 0.13 |
| Apr | 3.91 | 3.86 | 0.05 |
| May | 4.03 | 3.81 | 0.22 |
| Jun | 4.48 | 4.35 | 0.13 |
| Jul | 4.90 | 4.60 | 0.30 |
| Aug | 4.16 | 3.98 | 0.18 |
| Sep | 3.59 | 3.62 | -0.03 |
| Oct | 2.93 | 2.57 | 0.36 |
| Nov | 3.16 | 3.03 | 0.13 |
| Dec | 3.93 | 3.72 | 0.21 |
46.13 | 44.04 | 2.09 |