| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.75 | 0.75 | 0.00 |
| Feb | 0.80 | 0.82 | -0.02 |
| Mar | 1.52 | 1.49 | 0.03 |
| Apr | 2.74 | 2.82 | -0.08 |
| May | 4.05 | 3.95 | 0.10 |
| Jun | 4.30 | 4.31 | -0.01 |
| Jul | 4.40 | 4.34 | 0.06 |
| Aug | 4.06 | 4.04 | 0.02 |
| Sep | 3.39 | 3.19 | 0.20 |
| Oct | 2.80 | 2.86 | -0.06 |
| Nov | 1.58 | 1.60 | -0.02 |
| Dec | 1.07 | 1.10 | -0.03 |
31.46 | 31.27 | 0.19 |