| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.36 | 3.50 | -0.14 |
| Feb | 3.00 | 3.08 | -0.08 |
| Mar | 3.40 | 3.50 | -0.10 |
| Apr | 3.42 | 3.43 | -0.01 |
| May | 3.54 | 3.46 | 0.08 |
| Jun | 4.92 | 4.78 | 0.14 |
| Jul | 5.30 | 4.94 | 0.36 |
| Aug | 4.96 | 5.28 | -0.32 |
| Sep | 5.43 | 5.46 | -0.03 |
| Oct | 3.21 | 3.34 | -0.13 |
| Nov | 3.20 | 3.43 | -0.23 |
| Dec | 3.39 | 3.44 | -0.05 |
47.13 | 47.64 | -0.51 |