| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.74 | 0.71 | 0.03 |
| Feb | 0.93 | 0.91 | 0.02 |
| Mar | 1.75 | 1.75 | 0.00 |
| Apr | 2.80 | 2.89 | -0.09 |
| May | 4.80 | 4.93 | -0.13 |
| Jun | 4.70 | 4.57 | 0.13 |
| Jul | 3.98 | 4.01 | -0.03 |
| Aug | 3.42 | 3.61 | -0.19 |
| Sep | 3.10 | 3.04 | 0.06 |
| Oct | 2.41 | 2.36 | 0.05 |
| Nov | 1.34 | 1.35 | -0.01 |
| Dec | 1.08 | 1.02 | 0.06 |
31.05 | 31.15 | -0.10 |