| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.62 | -0.16 |
| Feb | 2.86 | 2.93 | -0.07 |
| Mar | 4.21 | 4.16 | 0.05 |
| Apr | 3.71 | 3.73 | -0.02 |
| May | 3.65 | 3.83 | -0.18 |
| Jun | 4.37 | 4.30 | 0.07 |
| Jul | 4.60 | 4.61 | -0.01 |
| Aug | 4.46 | 4.35 | 0.11 |
| Sep | 4.71 | 5.08 | -0.37 |
| Oct | 3.50 | 3.44 | 0.06 |
| Nov | 3.28 | 3.33 | -0.05 |
| Dec | 3.58 | 3.53 | 0.05 |
46.39 | 46.91 | -0.52 |