| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.76 | 0.02 |
| Feb | 0.89 | 0.81 | 0.08 |
| Mar | 1.50 | 1.34 | 0.16 |
| Apr | 2.72 | 2.81 | -0.09 |
| May | 4.00 | 3.93 | 0.07 |
| Jun | 4.34 | 4.15 | 0.19 |
| Jul | 4.29 | 4.19 | 0.10 |
| Aug | 4.06 | 3.89 | 0.17 |
| Sep | 3.35 | 3.48 | -0.13 |
| Oct | 2.92 | 2.92 | 0.00 |
| Nov | 1.67 | 1.52 | 0.15 |
| Dec | 1.14 | 1.12 | 0.02 |
31.66 | 30.92 | 0.74 |