| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.72 | 0.83 | -0.11 |
| Feb | 0.76 | 0.87 | -0.11 |
| Mar | 1.51 | 1.50 | 0.01 |
| Apr | 2.92 | 2.86 | 0.06 |
| May | 4.15 | 4.23 | -0.08 |
| Jun | 4.79 | 4.52 | 0.27 |
| Jul | 3.95 | 3.99 | -0.04 |
| Aug | 4.19 | 4.37 | -0.18 |
| Sep | 3.38 | 3.18 | 0.20 |
| Oct | 2.53 | 2.48 | 0.05 |
| Nov | 1.48 | 1.50 | -0.02 |
| Dec | 1.07 | 1.17 | -0.10 |
31.45 | 31.50 | -0.05 |