| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.76 | 0.02 |
| Feb | 0.81 | 0.79 | 0.02 |
| Mar | 1.53 | 1.41 | 0.12 |
| Apr | 2.78 | 2.79 | -0.01 |
| May | 4.07 | 4.07 | 0.00 |
| Jun | 4.25 | 4.34 | -0.09 |
| Jul | 4.31 | 4.28 | 0.03 |
| Aug | 3.99 | 4.07 | -0.08 |
| Sep | 3.26 | 3.31 | -0.05 |
| Oct | 2.88 | 2.93 | -0.05 |
| Nov | 1.61 | 1.60 | 0.01 |
| Dec | 1.11 | 1.14 | -0.03 |
31.38 | 31.49 | -0.11 |