| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.08 | 2.07 | 0.01 |
| Feb | 1.86 | 1.88 | -0.02 |
| Mar | 2.54 | 2.60 | -0.06 |
| Apr | 4.02 | 3.88 | 0.14 |
| May | 4.66 | 4.73 | -0.07 |
| Jun | 4.38 | 4.26 | 0.12 |
| Jul | 3.72 | 3.82 | -0.10 |
| Aug | 3.57 | 3.48 | 0.09 |
| Sep | 3.17 | 3.21 | -0.04 |
| Oct | 3.18 | 3.03 | 0.15 |
| Nov | 2.84 | 2.80 | 0.04 |
| Dec | 2.08 | 2.14 | -0.06 |
38.10 | 37.90 | 0.20 |