| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.34 | 0.34 | 0.00 |
| Feb | 0.43 | 0.52 | -0.09 |
| Mar | 0.85 | 0.96 | -0.11 |
| Apr | 1.63 | 1.58 | 0.05 |
| May | 2.53 | 2.45 | 0.08 |
| Jun | 2.75 | 2.68 | 0.07 |
| Jul | 3.31 | 3.50 | -0.19 |
| Aug | 2.73 | 2.74 | -0.01 |
| Sep | 1.40 | 1.50 | -0.10 |
| Oct | 1.24 | 1.32 | -0.08 |
| Nov | 0.55 | 0.58 | -0.03 |
| Dec | 0.41 | 0.48 | -0.07 |
18.17 | 18.65 | -0.48 |