| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.40 | 4.57 | -0.17 |
| Feb | 4.52 | 4.61 | -0.09 |
| Mar | 4.85 | 4.91 | -0.06 |
| Apr | 4.12 | 4.15 | -0.03 |
| May | 3.69 | 3.73 | -0.04 |
| Jun | 4.06 | 3.98 | 0.08 |
| Jul | 4.21 | 4.40 | -0.19 |
| Aug | 3.68 | 3.76 | -0.08 |
| Sep | 3.51 | 3.68 | -0.17 |
| Oct | 3.12 | 3.26 | -0.14 |
| Nov | 3.89 | 3.93 | -0.04 |
| Dec | 4.50 | 4.67 | -0.17 |
48.55 | 49.65 | -1.10 |