| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.37 | 0.39 | -0.02 |
| Feb | 0.47 | 0.45 | 0.02 |
| Mar | 0.80 | 0.86 | -0.06 |
| Apr | 1.72 | 1.70 | 0.02 |
| May | 2.65 | 2.73 | -0.08 |
| Jun | 2.61 | 2.66 | -0.05 |
| Jul | 3.11 | 3.16 | -0.05 |
| Aug | 2.48 | 2.65 | -0.17 |
| Sep | 1.31 | 1.17 | 0.14 |
| Oct | 1.20 | 1.21 | -0.01 |
| Nov | 0.53 | 0.47 | 0.06 |
| Dec | 0.40 | 0.40 | 0.00 |
17.65 | 17.85 | -0.20 |