| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.30 | 4.18 | -0.88 |
| Feb | 2.36 | 2.71 | -0.35 |
| Mar | 1.95 | 2.58 | -0.63 |
| Apr | 1.36 | 1.79 | -0.43 |
| May | 1.43 | 1.56 | -0.13 |
| Jun | 0.75 | 0.92 | -0.17 |
| Jul | 0.41 | 0.50 | -0.09 |
| Aug | 0.42 | 0.48 | -0.06 |
| Sep | 0.57 | 0.70 | -0.13 |
| Oct | 1.66 | 1.94 | -0.28 |
| Nov | 2.93 | 3.49 | -0.56 |
| Dec | 3.85 | 4.80 | -0.95 |
20.99 | 25.65 | -4.66 |