| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.58 | 3.74 | -0.16 |
| Feb | 3.00 | 3.11 | -0.11 |
| Mar | 3.87 | 3.92 | -0.05 |
| Apr | 3.37 | 3.58 | -0.21 |
| May | 3.69 | 3.84 | -0.15 |
| Jun | 4.45 | 4.42 | 0.03 |
| Jul | 5.40 | 5.45 | -0.05 |
| Aug | 5.46 | 5.33 | 0.13 |
| Sep | 4.89 | 4.90 | -0.01 |
| Oct | 3.88 | 4.02 | -0.14 |
| Nov | 3.11 | 3.47 | -0.36 |
| Dec | 3.42 | 3.70 | -0.28 |
48.12 | 49.48 | -1.36 |