| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.47 | 3.57 | -0.10 |
| Feb | 2.88 | 2.89 | -0.01 |
| Mar | 4.04 | 3.93 | 0.11 |
| Apr | 3.57 | 3.64 | -0.07 |
| May | 3.73 | 3.87 | -0.14 |
| Jun | 4.40 | 4.26 | 0.14 |
| Jul | 5.26 | 5.23 | 0.03 |
| Aug | 5.01 | 5.39 | -0.38 |
| Sep | 4.97 | 5.03 | -0.06 |
| Oct | 3.93 | 4.38 | -0.45 |
| Nov | 3.07 | 3.16 | -0.09 |
| Dec | 3.56 | 3.60 | -0.04 |
47.89 | 48.95 | -1.06 |