| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.37 | 0.41 | -0.04 |
| Feb | 0.45 | 0.45 | 0.00 |
| Mar | 0.68 | 0.67 | 0.01 |
| Apr | 1.28 | 1.29 | -0.01 |
| May | 2.51 | 2.67 | -0.16 |
| Jun | 3.28 | 3.31 | -0.03 |
| Jul | 2.50 | 2.94 | -0.44 |
| Aug | 1.91 | 2.04 | -0.13 |
| Sep | 1.66 | 1.83 | -0.17 |
| Oct | 1.29 | 1.37 | -0.08 |
| Nov | 0.61 | 0.63 | -0.02 |
| Dec | 0.54 | 0.53 | 0.01 |
17.08 | 18.14 | -1.06 |