| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.67 | 3.57 | 0.10 |
| Feb | 2.97 | 2.96 | 0.01 |
| Mar | 3.72 | 3.79 | -0.07 |
| Apr | 3.85 | 3.72 | 0.13 |
| May | 4.46 | 4.39 | 0.07 |
| Jun | 4.32 | 4.39 | -0.07 |
| Jul | 4.43 | 4.32 | 0.11 |
| Aug | 3.76 | 3.69 | 0.07 |
| Sep | 3.64 | 3.58 | 0.06 |
| Oct | 3.30 | 3.16 | 0.14 |
| Nov | 3.01 | 3.10 | -0.09 |
| Dec | 3.51 | 3.49 | 0.02 |
44.64 | 44.16 | 0.48 |