| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.69 | 0.79 | -0.10 |
| Feb | 0.80 | 0.87 | -0.07 |
| Mar | 1.46 | 1.56 | -0.10 |
| Apr | 2.81 | 2.89 | -0.08 |
| May | 4.11 | 4.21 | -0.10 |
| Jun | 4.44 | 4.44 | 0.00 |
| Jul | 4.04 | 4.25 | -0.21 |
| Aug | 4.00 | 4.06 | -0.06 |
| Sep | 3.18 | 3.30 | -0.12 |
| Oct | 2.76 | 2.72 | 0.04 |
| Nov | 1.51 | 1.59 | -0.08 |
| Dec | 1.01 | 1.16 | -0.15 |
30.81 | 31.84 | -1.03 |