| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.50 | 4.21 | 0.29 |
| Feb | 4.30 | 4.07 | 0.23 |
| Mar | 3.30 | 3.25 | 0.05 |
| Apr | 1.57 | 1.50 | 0.07 |
| May | 0.67 | 0.64 | 0.03 |
| Jun | 0.17 | 0.17 | 0.00 |
| Jul | 0.01 | 0.02 | -0.01 |
| Aug | 0.04 | 0.05 | -0.01 |
| Sep | 0.09 | 0.08 | 0.01 |
| Oct | 1.00 | 0.94 | 0.06 |
| Nov | 2.21 | 2.08 | 0.13 |
| Dec | 4.56 | 4.35 | 0.21 |
22.42 | 21.36 | 1.06 |