| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.59 | 1.63 | -0.04 |
| Feb | 1.54 | 1.58 | -0.04 |
| Mar | 1.97 | 1.94 | 0.03 |
| Apr | 3.68 | 3.71 | -0.03 |
| May | 3.80 | 3.81 | -0.01 |
| Jun | 4.51 | 4.58 | -0.07 |
| Jul | 3.61 | 3.69 | -0.08 |
| Aug | 3.75 | 3.71 | 0.04 |
| Sep | 3.20 | 3.10 | 0.10 |
| Oct | 2.82 | 2.76 | 0.06 |
| Nov | 2.09 | 2.09 | 0.00 |
| Dec | 1.81 | 1.92 | -0.11 |
34.37 | 34.52 | -0.15 |