| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.60 | 3.80 | -0.20 |
| Feb | 2.93 | 3.14 | -0.21 |
| Mar | 4.31 | 4.49 | -0.18 |
| Apr | 3.66 | 3.83 | -0.17 |
| May | 3.92 | 3.91 | 0.01 |
| Jun | 4.16 | 4.27 | -0.11 |
| Jul | 4.49 | 4.60 | -0.11 |
| Aug | 4.58 | 4.55 | 0.03 |
| Sep | 3.91 | 4.08 | -0.17 |
| Oct | 4.04 | 4.25 | -0.21 |
| Nov | 3.33 | 3.48 | -0.15 |
| Dec | 4.33 | 4.61 | -0.28 |
47.26 | 49.01 | -1.75 |