| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.42 | 1.34 | 0.08 |
| Feb | 1.64 | 1.57 | 0.07 |
| Mar | 2.30 | 2.14 | 0.16 |
| Apr | 3.82 | 3.74 | 0.08 |
| May | 4.28 | 4.31 | -0.03 |
| Jun | 5.63 | 5.55 | 0.08 |
| Jul | 4.76 | 4.54 | 0.22 |
| Aug | 3.90 | 4.05 | -0.15 |
| Sep | 3.94 | 3.86 | 0.08 |
| Oct | 2.98 | 3.02 | -0.04 |
| Nov | 2.33 | 2.35 | -0.02 |
| Dec | 1.86 | 1.75 | 0.11 |
38.86 | 38.22 | 0.64 |