| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.08 | 4.16 | -0.08 |
| Feb | 4.57 | 4.54 | 0.03 |
| Mar | 4.76 | 4.80 | -0.04 |
| Apr | 4.85 | 4.93 | -0.08 |
| May | 4.90 | 5.18 | -0.28 |
| Jun | 4.25 | 4.35 | -0.10 |
| Jul | 4.45 | 4.60 | -0.15 |
| Aug | 3.87 | 3.86 | 0.01 |
| Sep | 3.77 | 3.83 | -0.06 |
| Oct | 3.49 | 3.52 | -0.03 |
| Nov | 3.63 | 3.70 | -0.07 |
| Dec | 4.65 | 4.80 | -0.15 |
51.27 | 52.27 | -1.00 |