| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.50 | 0.53 | -0.03 |
| Feb | 0.55 | 0.57 | -0.02 |
| Mar | 1.22 | 1.27 | -0.05 |
| Apr | 1.67 | 1.78 | -0.11 |
| May | 2.80 | 2.99 | -0.19 |
| Jun | 3.24 | 3.26 | -0.02 |
| Jul | 3.25 | 3.12 | 0.13 |
| Aug | 2.92 | 3.02 | -0.10 |
| Sep | 1.46 | 1.43 | 0.03 |
| Oct | 1.71 | 1.77 | -0.06 |
| Nov | 0.63 | 0.64 | -0.01 |
| Dec | 0.75 | 0.83 | -0.08 |
20.70 | 21.21 | -0.51 |