| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.37 | 3.65 | -0.28 |
| Feb | 3.29 | 3.53 | -0.24 |
| Mar | 4.36 | 4.66 | -0.30 |
| Apr | 4.12 | 4.28 | -0.16 |
| May | 3.76 | 3.90 | -0.14 |
| Jun | 4.12 | 4.28 | -0.16 |
| Jul | 3.55 | 3.53 | 0.02 |
| Aug | 3.43 | 3.45 | -0.02 |
| Sep | 3.75 | 3.88 | -0.13 |
| Oct | 4.76 | 4.91 | -0.15 |
| Nov | 3.86 | 3.85 | 0.01 |
| Dec | 4.46 | 4.73 | -0.27 |
46.83 | 48.65 | -1.82 |