| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.76 | 3.84 | -0.08 |
| Feb | 3.51 | 3.45 | 0.06 |
| Mar | 4.67 | 4.68 | -0.01 |
| Apr | 4.18 | 4.31 | -0.13 |
| May | 3.61 | 3.63 | -0.02 |
| Jun | 4.12 | 4.08 | 0.04 |
| Jul | 3.47 | 3.52 | -0.05 |
| Aug | 3.60 | 3.64 | -0.04 |
| Sep | 3.85 | 3.82 | 0.03 |
| Oct | 4.78 | 4.80 | -0.02 |
| Nov | 3.99 | 3.98 | 0.01 |
| Dec | 4.77 | 4.86 | -0.09 |
48.31 | 48.61 | -0.30 |