| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.03 | 1.90 | 0.13 |
| Feb | 2.18 | 2.16 | 0.02 |
| Mar | 3.35 | 3.18 | 0.17 |
| Apr | 3.82 | 3.72 | 0.10 |
| May | 5.65 | 5.32 | 0.33 |
| Jun | 4.73 | 4.44 | 0.29 |
| Jul | 3.28 | 3.33 | -0.05 |
| Aug | 3.10 | 2.83 | 0.27 |
| Sep | 4.50 | 4.16 | 0.34 |
| Oct | 4.07 | 3.97 | 0.10 |
| Nov | 2.64 | 2.62 | 0.02 |
| Dec | 2.76 | 2.53 | 0.23 |
42.11 | 40.16 | 1.95 |