| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.38 | 3.60 | -0.22 |
| Feb | 2.78 | 2.89 | -0.11 |
| Mar | 4.32 | 4.42 | -0.10 |
| Apr | 3.61 | 3.57 | 0.04 |
| May | 3.40 | 3.59 | -0.19 |
| Jun | 4.12 | 4.26 | -0.14 |
| Jul | 4.58 | 4.55 | 0.03 |
| Aug | 4.57 | 4.80 | -0.23 |
| Sep | 4.28 | 4.19 | 0.09 |
| Oct | 3.93 | 4.01 | -0.08 |
| Nov | 3.13 | 3.18 | -0.05 |
| Dec | 4.09 | 4.38 | -0.29 |
46.19 | 47.44 | -1.25 |