| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.66 | -0.09 |
| Feb | 3.03 | 2.94 | 0.09 |
| Mar | 4.08 | 4.01 | 0.07 |
| Apr | 3.60 | 3.58 | 0.02 |
| May | 3.80 | 3.61 | 0.19 |
| Jun | 4.43 | 4.37 | 0.06 |
| Jul | 4.95 | 5.26 | -0.31 |
| Aug | 5.01 | 4.98 | 0.03 |
| Sep | 5.28 | 5.42 | -0.14 |
| Oct | 3.47 | 3.36 | 0.11 |
| Nov | 3.42 | 3.40 | 0.02 |
| Dec | 3.56 | 3.51 | 0.05 |
48.20 | 48.10 | 0.10 |