| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.60 | 3.27 | 0.33 |
| Feb | 3.51 | 3.17 | 0.34 |
| Mar | 2.83 | 2.70 | 0.13 |
| Apr | 1.26 | 1.23 | 0.03 |
| May | 0.49 | 0.45 | 0.04 |
| Jun | 0.09 | 0.13 | -0.04 |
| Jul | 0.02 | 0.02 | 0.00 |
| Aug | 0.03 | 0.03 | 0.00 |
| Sep | 0.07 | 0.05 | 0.02 |
| Oct | 0.79 | 0.74 | 0.05 |
| Nov | 1.75 | 1.53 | 0.22 |
| Dec | 3.21 | 3.08 | 0.13 |
17.65 | 16.40 | 1.25 |