| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.85 | 3.82 | 0.03 |
| Feb | 3.39 | 3.39 | 0.00 |
| Mar | 4.52 | 4.48 | 0.04 |
| Apr | 4.45 | 4.30 | 0.15 |
| May | 3.60 | 3.49 | 0.11 |
| Jun | 4.39 | 4.33 | 0.06 |
| Jul | 3.72 | 3.80 | -0.08 |
| Aug | 4.06 | 4.00 | 0.06 |
| Sep | 4.03 | 3.85 | 0.18 |
| Oct | 5.06 | 4.89 | 0.17 |
| Nov | 4.01 | 3.83 | 0.18 |
| Dec | 4.70 | 4.80 | -0.10 |
49.78 | 48.98 | 0.80 |