| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.47 | 0.44 | 0.03 |
| Feb | 0.60 | 0.61 | -0.01 |
| Mar | 1.00 | 1.04 | -0.04 |
| Apr | 2.25 | 2.37 | -0.12 |
| May | 3.28 | 3.37 | -0.09 |
| Jun | 3.38 | 3.37 | 0.01 |
| Jul | 2.74 | 2.54 | 0.20 |
| Aug | 2.41 | 2.36 | 0.05 |
| Sep | 1.66 | 1.69 | -0.03 |
| Oct | 1.63 | 1.61 | 0.02 |
| Nov | 0.61 | 0.67 | -0.06 |
| Dec | 0.46 | 0.51 | -0.05 |
20.49 | 20.58 | -0.09 |