| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.01 | 4.15 | -0.14 |
| Feb | 4.09 | 4.10 | -0.01 |
| Mar | 4.84 | 4.89 | -0.05 |
| Apr | 4.46 | 4.45 | 0.01 |
| May | 4.87 | 4.78 | 0.09 |
| Jun | 4.21 | 4.47 | -0.26 |
| Jul | 3.44 | 3.15 | 0.29 |
| Aug | 2.85 | 2.74 | 0.11 |
| Sep | 3.83 | 3.88 | -0.05 |
| Oct | 4.56 | 4.47 | 0.09 |
| Nov | 3.90 | 3.86 | 0.04 |
| Dec | 4.84 | 4.76 | 0.08 |
49.90 | 49.70 | 0.20 |