| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.56 | 3.57 | -0.01 |
| Feb | 3.22 | 3.12 | 0.10 |
| Mar | 3.98 | 3.81 | 0.17 |
| Apr | 3.78 | 3.51 | 0.27 |
| May | 3.61 | 3.56 | 0.05 |
| Jun | 4.26 | 4.25 | 0.01 |
| Jul | 3.79 | 3.64 | 0.15 |
| Aug | 4.16 | 4.07 | 0.09 |
| Sep | 3.77 | 3.83 | -0.06 |
| Oct | 3.21 | 3.17 | 0.04 |
| Nov | 3.23 | 3.04 | 0.19 |
| Dec | 3.73 | 3.81 | -0.08 |
44.30 | 43.38 | 0.92 |