| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.33 | 0.28 | 0.05 |
| Feb | 0.48 | 0.47 | 0.01 |
| Mar | 0.94 | 0.88 | 0.06 |
| Apr | 1.68 | 1.62 | 0.06 |
| May | 2.52 | 2.52 | 0.00 |
| Jun | 2.22 | 2.23 | -0.01 |
| Jul | 1.99 | 1.98 | 0.01 |
| Aug | 1.45 | 1.63 | -0.18 |
| Sep | 1.44 | 1.52 | -0.08 |
| Oct | 1.06 | 1.01 | 0.05 |
| Nov | 0.57 | 0.56 | 0.01 |
| Dec | 0.44 | 0.44 | 0.00 |
15.12 | 15.14 | -0.02 |