| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.37 | 3.26 | 0.11 |
| Feb | 3.13 | 3.05 | 0.08 |
| Mar | 4.48 | 4.18 | 0.30 |
| Apr | 5.46 | 5.14 | 0.32 |
| May | 5.01 | 4.92 | 0.09 |
| Jun | 4.54 | 4.50 | 0.04 |
| Jul | 3.91 | 3.83 | 0.08 |
| Aug | 3.33 | 3.08 | 0.25 |
| Sep | 3.45 | 3.16 | 0.29 |
| Oct | 3.60 | 3.43 | 0.17 |
| Nov | 4.09 | 4.06 | 0.03 |
| Dec | 3.50 | 3.51 | -0.01 |
47.87 | 46.12 | 1.75 |