| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.67 | 1.65 | 0.02 |
| Feb | 1.61 | 1.65 | -0.04 |
| Mar | 2.16 | 2.20 | -0.04 |
| Apr | 3.71 | 3.63 | 0.08 |
| May | 4.37 | 4.30 | 0.07 |
| Jun | 5.00 | 5.11 | -0.11 |
| Jul | 3.89 | 3.78 | 0.11 |
| Aug | 4.05 | 3.99 | 0.06 |
| Sep | 3.47 | 3.63 | -0.16 |
| Oct | 2.93 | 2.84 | 0.09 |
| Nov | 2.38 | 2.35 | 0.03 |
| Dec | 1.94 | 1.95 | -0.01 |
37.18 | 37.08 | 0.10 |