| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.77 | 1.70 | 0.07 |
| Feb | 1.87 | 1.74 | 0.13 |
| Mar | 2.62 | 2.50 | 0.12 |
| Apr | 2.39 | 2.34 | 0.05 |
| May | 4.28 | 4.29 | -0.01 |
| Jun | 3.30 | 3.13 | 0.17 |
| Jul | 1.96 | 2.23 | -0.27 |
| Aug | 2.35 | 2.23 | 0.12 |
| Sep | 3.50 | 3.29 | 0.21 |
| Oct | 3.14 | 3.01 | 0.13 |
| Nov | 2.28 | 2.22 | 0.06 |
| Dec | 1.84 | 1.90 | -0.06 |
31.30 | 30.58 | 0.72 |