| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.44 | 3.27 | 0.17 |
| Feb | 3.08 | 2.82 | 0.26 |
| Mar | 3.86 | 3.73 | 0.13 |
| Apr | 3.65 | 3.63 | 0.02 |
| May | 3.66 | 3.51 | 0.15 |
| Jun | 4.23 | 3.98 | 0.25 |
| Jul | 4.50 | 4.48 | 0.02 |
| Aug | 3.79 | 3.92 | -0.13 |
| Sep | 3.32 | 3.35 | -0.03 |
| Oct | 2.60 | 2.35 | 0.25 |
| Nov | 3.01 | 2.83 | 0.18 |
| Dec | 3.71 | 3.34 | 0.37 |
42.85 | 41.21 | 1.64 |