| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.92 | 3.76 | 0.16 |
| Feb | 3.31 | 3.25 | 0.06 |
| Mar | 4.13 | 4.00 | 0.13 |
| Apr | 4.15 | 4.14 | 0.01 |
| May | 4.27 | 4.14 | 0.13 |
| Jun | 4.32 | 4.31 | 0.01 |
| Jul | 5.10 | 4.60 | 0.50 |
| Aug | 4.30 | 4.22 | 0.08 |
| Sep | 3.92 | 4.13 | -0.21 |
| Oct | 3.31 | 2.94 | 0.37 |
| Nov | 3.58 | 3.19 | 0.39 |
| Dec | 4.07 | 3.85 | 0.22 |
48.38 | 46.53 | 1.85 |