| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.58 | 0.54 | 0.04 |
| Feb | 0.77 | 0.73 | 0.04 |
| Mar | 1.53 | 1.47 | 0.06 |
| Apr | 2.94 | 2.88 | 0.06 |
| May | 3.96 | 3.93 | 0.03 |
| Jun | 4.34 | 4.33 | 0.01 |
| Jul | 3.19 | 3.19 | 0.00 |
| Aug | 3.36 | 3.18 | 0.18 |
| Sep | 3.09 | 2.98 | 0.11 |
| Oct | 2.41 | 2.36 | 0.05 |
| Nov | 1.25 | 1.25 | 0.00 |
| Dec | 0.88 | 0.81 | 0.07 |
28.30 | 27.65 | 0.65 |