| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.03 | 4.29 | -0.26 |
| Feb | 4.85 | 5.02 | -0.17 |
| Mar | 3.28 | 3.50 | -0.22 |
| Apr | 1.65 | 1.62 | 0.03 |
| May | 0.90 | 0.76 | 0.14 |
| Jun | 0.10 | 0.10 | 0.00 |
| Jul | 0.20 | 0.31 | -0.11 |
| Aug | 0.36 | 0.31 | 0.05 |
| Sep | 0.35 | 0.40 | -0.05 |
| Oct | 0.83 | 0.86 | -0.03 |
| Nov | 1.68 | 1.81 | -0.13 |
| Dec | 3.22 | 3.35 | -0.13 |
21.45 | 22.33 | -0.88 |