| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.11 | 3.95 | 0.16 |
| Feb | 3.94 | 3.53 | 0.41 |
| Mar | 2.83 | 2.63 | 0.20 |
| Apr | 1.24 | 1.30 | -0.06 |
| May | 0.96 | 0.90 | 0.06 |
| Jun | 0.35 | 0.30 | 0.05 |
| Jul | 0.01 | 0.02 | -0.01 |
| Aug | 0.03 | 0.05 | -0.02 |
| Sep | 0.14 | 0.14 | 0.00 |
| Oct | 0.93 | 0.85 | 0.08 |
| Nov | 2.15 | 1.90 | 0.25 |
| Dec | 3.89 | 3.39 | 0.50 |
20.58 | 18.96 | 1.62 |