| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.48 | 3.61 | -0.13 |
| Feb | 2.86 | 2.93 | -0.07 |
| Mar | 4.12 | 4.20 | -0.08 |
| Apr | 3.66 | 3.84 | -0.18 |
| May | 4.04 | 3.99 | 0.05 |
| Jun | 4.30 | 4.53 | -0.23 |
| Jul | 4.92 | 4.93 | -0.01 |
| Aug | 4.45 | 4.48 | -0.03 |
| Sep | 4.10 | 4.23 | -0.13 |
| Oct | 4.13 | 4.15 | -0.02 |
| Nov | 3.24 | 3.36 | -0.12 |
| Dec | 4.30 | 4.38 | -0.08 |
47.60 | 48.63 | -1.03 |