| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.51 | 3.55 | -0.04 |
| Feb | 2.81 | 2.82 | -0.01 |
| Mar | 4.11 | 4.16 | -0.05 |
| Apr | 3.75 | 3.86 | -0.11 |
| May | 4.09 | 4.03 | 0.06 |
| Jun | 4.44 | 4.48 | -0.04 |
| Jul | 4.98 | 5.01 | -0.03 |
| Aug | 4.45 | 4.48 | -0.03 |
| Sep | 4.29 | 4.22 | 0.07 |
| Oct | 4.23 | 4.20 | 0.03 |
| Nov | 3.26 | 3.33 | -0.07 |
| Dec | 4.24 | 4.31 | -0.07 |
48.16 | 48.45 | -0.29 |