| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.74 | 0.70 | 0.04 |
| Feb | 0.77 | 0.75 | 0.02 |
| Mar | 1.46 | 1.44 | 0.02 |
| Apr | 2.49 | 2.53 | -0.04 |
| May | 3.51 | 3.52 | -0.01 |
| Jun | 4.40 | 4.41 | -0.01 |
| Jul | 4.25 | 4.03 | 0.22 |
| Aug | 3.72 | 3.70 | 0.02 |
| Sep | 2.86 | 2.89 | -0.03 |
| Oct | 2.67 | 2.69 | -0.02 |
| Nov | 1.31 | 1.30 | 0.01 |
| Dec | 0.88 | 0.92 | -0.04 |
29.06 | 28.88 | 0.18 |