| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.58 | 4.85 | -0.27 |
| Feb | 4.68 | 4.84 | -0.16 |
| Mar | 4.86 | 5.06 | -0.20 |
| Apr | 4.14 | 4.26 | -0.12 |
| May | 3.78 | 3.89 | -0.11 |
| Jun | 4.14 | 4.07 | 0.07 |
| Jul | 4.56 | 4.54 | 0.02 |
| Aug | 3.78 | 3.90 | -0.12 |
| Sep | 3.74 | 4.04 | -0.30 |
| Oct | 3.23 | 3.35 | -0.12 |
| Nov | 4.02 | 4.20 | -0.18 |
| Dec | 4.50 | 4.70 | -0.20 |
50.01 | 51.70 | -1.69 |