| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.08 | 3.18 | -0.10 |
| Feb | 2.59 | 2.51 | 0.08 |
| Mar | 3.68 | 3.66 | 0.02 |
| Apr | 4.33 | 4.30 | 0.03 |
| May | 4.50 | 4.66 | -0.16 |
| Jun | 4.66 | 4.59 | 0.07 |
| Jul | 4.19 | 4.20 | -0.01 |
| Aug | 3.23 | 3.16 | 0.07 |
| Sep | 2.98 | 2.88 | 0.10 |
| Oct | 3.05 | 3.02 | 0.03 |
| Nov | 3.01 | 3.00 | 0.01 |
| Dec | 3.25 | 3.20 | 0.05 |
42.55 | 42.36 | 0.19 |