| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.16 | 4.18 | -0.02 |
| Feb | 4.63 | 4.50 | 0.13 |
| Mar | 4.82 | 4.76 | 0.06 |
| Apr | 4.98 | 4.93 | 0.05 |
| May | 5.00 | 5.17 | -0.17 |
| Jun | 4.35 | 4.30 | 0.05 |
| Jul | 4.64 | 4.62 | 0.02 |
| Aug | 3.97 | 3.94 | 0.03 |
| Sep | 3.81 | 3.80 | 0.01 |
| Oct | 3.55 | 3.46 | 0.09 |
| Nov | 3.75 | 3.67 | 0.08 |
| Dec | 4.79 | 4.80 | -0.01 |
52.45 | 52.13 | 0.32 |