| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.55 | 3.74 | -0.19 |
| Feb | 2.97 | 3.13 | -0.16 |
| Mar | 4.28 | 4.23 | 0.05 |
| Apr | 3.73 | 3.91 | -0.18 |
| May | 3.86 | 3.76 | 0.10 |
| Jun | 4.17 | 4.09 | 0.08 |
| Jul | 4.21 | 4.04 | 0.17 |
| Aug | 4.52 | 5.01 | -0.49 |
| Sep | 3.92 | 3.93 | -0.01 |
| Oct | 4.04 | 4.20 | -0.16 |
| Nov | 3.33 | 3.34 | -0.01 |
| Dec | 4.25 | 4.58 | -0.33 |
46.83 | 47.96 | -1.13 |