| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.82 | 4.09 | -0.27 |
| Feb | 3.27 | 3.69 | -0.42 |
| Mar | 4.35 | 4.62 | -0.27 |
| Apr | 4.02 | 4.10 | -0.08 |
| May | 3.15 | 3.28 | -0.13 |
| Jun | 3.32 | 3.38 | -0.06 |
| Jul | 2.54 | 2.75 | -0.21 |
| Aug | 3.40 | 3.30 | 0.10 |
| Sep | 3.80 | 3.93 | -0.13 |
| Oct | 4.38 | 4.51 | -0.13 |
| Nov | 4.02 | 3.99 | 0.03 |
| Dec | 4.65 | 5.00 | -0.35 |
44.72 | 46.64 | -1.92 |