| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.67 | 0.66 | 0.01 |
| Feb | 0.66 | 0.68 | -0.02 |
| Mar | 1.23 | 1.18 | 0.05 |
| Apr | 2.19 | 2.15 | 0.04 |
| May | 3.34 | 3.43 | -0.09 |
| Jun | 4.25 | 4.26 | -0.01 |
| Jul | 4.32 | 4.23 | 0.09 |
| Aug | 3.41 | 3.14 | 0.27 |
| Sep | 2.96 | 2.85 | 0.11 |
| Oct | 2.66 | 2.64 | 0.02 |
| Nov | 1.19 | 1.09 | 0.10 |
| Dec | 0.86 | 0.89 | -0.03 |
27.74 | 27.20 | 0.54 |