| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.86 | 0.83 | 0.03 |
| Feb | 0.90 | 0.91 | -0.01 |
| Mar | 1.48 | 1.51 | -0.03 |
| Apr | 2.68 | 2.79 | -0.11 |
| May | 3.65 | 3.81 | -0.16 |
| Jun | 4.11 | 4.23 | -0.12 |
| Jul | 4.02 | 4.22 | -0.20 |
| Aug | 3.81 | 3.97 | -0.16 |
| Sep | 3.61 | 3.58 | 0.03 |
| Oct | 3.07 | 3.16 | -0.09 |
| Nov | 1.67 | 1.66 | 0.01 |
| Dec | 1.25 | 1.24 | 0.01 |
31.11 | 31.91 | -0.80 |