| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.07 | 1.04 | 0.03 |
| Feb | 1.15 | 1.09 | 0.06 |
| Mar | 1.85 | 1.83 | 0.02 |
| Apr | 3.14 | 3.01 | 0.13 |
| May | 4.13 | 4.00 | 0.13 |
| Jun | 4.84 | 4.65 | 0.19 |
| Jul | 3.62 | 3.61 | 0.01 |
| Aug | 4.20 | 3.95 | 0.25 |
| Sep | 3.57 | 3.58 | -0.01 |
| Oct | 2.66 | 2.51 | 0.15 |
| Nov | 1.84 | 1.75 | 0.09 |
| Dec | 1.26 | 1.33 | -0.07 |
33.33 | 32.35 | 0.98 |