| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.49 | 1.59 | -0.10 |
| Feb | 1.41 | 1.52 | -0.11 |
| Mar | 1.99 | 1.90 | 0.09 |
| Apr | 2.46 | 2.54 | -0.08 |
| May | 2.23 | 2.22 | 0.01 |
| Jun | 1.08 | 1.06 | 0.02 |
| Jul | 0.57 | 0.61 | -0.04 |
| Aug | 0.64 | 0.60 | 0.04 |
| Sep | 1.26 | 1.20 | 0.06 |
| Oct | 1.53 | 1.47 | 0.06 |
| Nov | 1.44 | 1.45 | -0.01 |
| Dec | 1.45 | 1.49 | -0.04 |
17.55 | 17.65 | -0.10 |