| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.79 | 0.79 | 0.00 |
| Feb | 0.84 | 0.88 | -0.04 |
| Mar | 1.42 | 1.41 | 0.01 |
| Apr | 2.55 | 2.50 | 0.05 |
| May | 3.39 | 3.40 | -0.01 |
| Jun | 4.55 | 4.70 | -0.15 |
| Jul | 4.44 | 4.56 | -0.12 |
| Aug | 3.73 | 3.81 | -0.08 |
| Sep | 3.20 | 3.23 | -0.03 |
| Oct | 2.99 | 3.07 | -0.08 |
| Nov | 1.61 | 1.57 | 0.04 |
| Dec | 1.18 | 1.21 | -0.03 |
30.69 | 31.13 | -0.44 |