| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.44 | 3.79 | -0.35 |
| Feb | 2.97 | 3.30 | -0.33 |
| Mar | 4.35 | 4.74 | -0.39 |
| Apr | 4.10 | 4.31 | -0.21 |
| May | 3.56 | 3.57 | -0.01 |
| Jun | 3.74 | 3.73 | 0.01 |
| Jul | 3.19 | 3.19 | 0.00 |
| Aug | 3.67 | 3.90 | -0.23 |
| Sep | 4.05 | 4.16 | -0.11 |
| Oct | 4.43 | 4.47 | -0.04 |
| Nov | 3.65 | 3.76 | -0.11 |
| Dec | 4.30 | 4.65 | -0.35 |
45.45 | 47.57 | -2.12 |