| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.51 | 3.41 | 0.10 |
| Feb | 3.08 | 2.97 | 0.11 |
| Mar | 4.08 | 3.98 | 0.10 |
| Apr | 3.32 | 3.32 | 0.00 |
| May | 3.59 | 3.67 | -0.08 |
| Jun | 3.94 | 3.99 | -0.05 |
| Jul | 4.59 | 4.50 | 0.09 |
| Aug | 4.40 | 4.61 | -0.21 |
| Sep | 4.25 | 4.30 | -0.05 |
| Oct | 3.96 | 4.38 | -0.42 |
| Nov | 3.11 | 3.00 | 0.11 |
| Dec | 3.67 | 3.86 | -0.19 |
45.50 | 45.99 | -0.49 |