| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.50 | 3.59 | -0.09 |
| Feb | 2.91 | 2.95 | -0.04 |
| Mar | 4.14 | 4.19 | -0.05 |
| Apr | 3.88 | 3.92 | -0.04 |
| May | 4.07 | 4.05 | 0.02 |
| Jun | 4.48 | 4.63 | -0.15 |
| Jul | 4.79 | 4.77 | 0.02 |
| Aug | 4.45 | 4.48 | -0.03 |
| Sep | 4.32 | 4.40 | -0.08 |
| Oct | 4.32 | 4.30 | 0.02 |
| Nov | 3.48 | 3.48 | 0.00 |
| Dec | 4.39 | 4.37 | 0.02 |
48.73 | 49.13 | -0.40 |