| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.26 | 4.10 | 0.16 |
| Feb | 4.50 | 4.24 | 0.26 |
| Mar | 4.80 | 4.41 | 0.39 |
| Apr | 4.37 | 4.36 | 0.01 |
| May | 3.66 | 3.60 | 0.06 |
| Jun | 4.20 | 3.89 | 0.31 |
| Jul | 4.34 | 4.71 | -0.37 |
| Aug | 3.37 | 3.18 | 0.19 |
| Sep | 3.37 | 3.16 | 0.21 |
| Oct | 3.05 | 2.69 | 0.36 |
| Nov | 3.73 | 3.27 | 0.46 |
| Dec | 4.75 | 4.61 | 0.14 |
48.40 | 46.22 | 2.18 |