| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.41 | 0.53 | -0.12 |
| Feb | 0.58 | 0.74 | -0.16 |
| Mar | 0.79 | 0.92 | -0.13 |
| Apr | 1.80 | 1.94 | -0.14 |
| May | 3.00 | 3.11 | -0.11 |
| Jun | 3.43 | 3.57 | -0.14 |
| Jul | 2.54 | 2.60 | -0.06 |
| Aug | 2.18 | 2.43 | -0.25 |
| Sep | 1.64 | 1.63 | 0.01 |
| Oct | 1.73 | 1.85 | -0.12 |
| Nov | 0.53 | 0.65 | -0.12 |
| Dec | 0.44 | 0.55 | -0.11 |
19.07 | 20.52 | -1.45 |