| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.40 | 0.42 | -0.02 |
| Feb | 0.58 | 0.60 | -0.02 |
| Mar | 0.94 | 1.04 | -0.10 |
| Apr | 1.97 | 1.98 | -0.01 |
| May | 3.28 | 3.41 | -0.13 |
| Jun | 3.13 | 3.33 | -0.20 |
| Jul | 2.29 | 2.63 | -0.34 |
| Aug | 1.62 | 1.76 | -0.14 |
| Sep | 1.26 | 1.35 | -0.09 |
| Oct | 1.67 | 1.74 | -0.07 |
| Nov | 0.53 | 0.54 | -0.01 |
| Dec | 0.46 | 0.52 | -0.06 |
18.13 | 19.32 | -1.19 |