| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.01 | 3.92 | 0.09 |
| Feb | 3.18 | 3.11 | 0.07 |
| Mar | 4.17 | 4.13 | 0.04 |
| Apr | 4.38 | 4.26 | 0.12 |
| May | 4.76 | 4.62 | 0.14 |
| Jun | 4.83 | 4.76 | 0.07 |
| Jul | 5.12 | 5.14 | -0.02 |
| Aug | 4.87 | 4.62 | 0.25 |
| Sep | 4.52 | 4.26 | 0.26 |
| Oct | 3.57 | 3.44 | 0.13 |
| Nov | 3.40 | 3.38 | 0.02 |
| Dec | 4.16 | 4.13 | 0.03 |
50.97 | 49.77 | 1.20 |