| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.41 | 0.35 | 0.06 |
| Feb | 0.62 | 0.51 | 0.11 |
| Mar | 1.14 | 1.02 | 0.12 |
| Apr | 2.62 | 2.40 | 0.22 |
| May | 3.69 | 3.57 | 0.12 |
| Jun | 3.96 | 3.89 | 0.07 |
| Jul | 2.72 | 2.82 | -0.10 |
| Aug | 2.16 | 2.10 | 0.06 |
| Sep | 1.93 | 1.73 | 0.20 |
| Oct | 1.62 | 1.40 | 0.22 |
| Nov | 0.64 | 0.56 | 0.08 |
| Dec | 0.50 | 0.44 | 0.06 |
22.01 | 20.79 | 1.22 |