| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.98 | 4.66 | -0.68 |
| Feb | 4.28 | 4.70 | -0.42 |
| Mar | 2.60 | 2.70 | -0.10 |
| Apr | 1.12 | 0.98 | 0.14 |
| May | 0.45 | 0.42 | 0.03 |
| Jun | 0.10 | 0.14 | -0.04 |
| Jul | 0.69 | 0.59 | 0.10 |
| Aug | 0.61 | 0.58 | 0.03 |
| Sep | 0.59 | 0.49 | 0.10 |
| Oct | 0.76 | 0.92 | -0.16 |
| Nov | 1.33 | 1.30 | 0.03 |
| Dec | 2.94 | 3.31 | -0.37 |
19.45 | 20.79 | -1.34 |