| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.91 | 3.93 | -0.02 |
| Feb | 3.77 | 3.84 | -0.07 |
| Mar | 4.43 | 4.47 | -0.04 |
| Apr | 2.92 | 3.02 | -0.10 |
| May | 3.20 | 3.19 | 0.01 |
| Jun | 4.47 | 4.62 | -0.15 |
| Jul | 4.19 | 4.21 | -0.02 |
| Aug | 4.32 | 4.54 | -0.22 |
| Sep | 3.46 | 3.61 | -0.15 |
| Oct | 2.70 | 2.84 | -0.14 |
| Nov | 3.19 | 3.25 | -0.06 |
| Dec | 4.03 | 4.05 | -0.02 |
44.59 | 45.57 | -0.98 |