| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.60 | 0.58 | 0.02 |
| Feb | 0.85 | 0.76 | 0.09 |
| Mar | 1.51 | 1.44 | 0.07 |
| Apr | 3.19 | 3.07 | 0.12 |
| May | 4.13 | 3.93 | 0.20 |
| Jun | 4.30 | 4.49 | -0.19 |
| Jul | 3.26 | 3.18 | 0.08 |
| Aug | 3.39 | 3.37 | 0.02 |
| Sep | 2.91 | 2.89 | 0.02 |
| Oct | 2.50 | 2.53 | -0.03 |
| Nov | 1.30 | 1.30 | 0.00 |
| Dec | 0.85 | 0.74 | 0.11 |
28.79 | 28.28 | 0.51 |