| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.54 | 1.53 | 0.01 |
| Feb | 1.42 | 1.45 | -0.03 |
| Mar | 2.20 | 2.18 | 0.02 |
| Apr | 1.82 | 1.73 | 0.09 |
| May | 3.39 | 3.18 | 0.21 |
| Jun | 3.42 | 3.08 | 0.34 |
| Jul | 2.42 | 2.59 | -0.17 |
| Aug | 2.43 | 2.64 | -0.21 |
| Sep | 5.10 | 5.14 | -0.04 |
| Oct | 3.08 | 3.24 | -0.16 |
| Nov | 2.05 | 1.99 | 0.06 |
| Dec | 1.68 | 1.66 | 0.02 |
30.55 | 30.41 | 0.14 |