| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.27 | 3.51 | -0.24 |
| Feb | 3.16 | 3.46 | -0.30 |
| Mar | 4.13 | 4.60 | -0.47 |
| Apr | 3.98 | 4.14 | -0.16 |
| May | 3.65 | 3.71 | -0.06 |
| Jun | 4.13 | 4.21 | -0.08 |
| Jul | 3.59 | 3.50 | 0.09 |
| Aug | 3.43 | 3.42 | 0.01 |
| Sep | 3.75 | 3.79 | -0.04 |
| Oct | 4.66 | 4.89 | -0.23 |
| Nov | 3.74 | 3.77 | -0.03 |
| Dec | 4.30 | 4.59 | -0.29 |
45.79 | 47.59 | -1.80 |