| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.74 | 0.04 |
| Feb | 0.79 | 0.80 | -0.01 |
| Mar | 1.54 | 1.47 | 0.07 |
| Apr | 2.81 | 2.80 | 0.01 |
| May | 4.10 | 3.97 | 0.13 |
| Jun | 4.22 | 4.34 | -0.12 |
| Jul | 4.35 | 4.25 | 0.10 |
| Aug | 3.99 | 4.03 | -0.04 |
| Sep | 3.28 | 3.24 | 0.04 |
| Oct | 2.87 | 2.89 | -0.02 |
| Nov | 1.59 | 1.59 | 0.00 |
| Dec | 1.10 | 1.11 | -0.01 |
31.42 | 31.23 | 0.19 |