| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.57 | 0.56 | 0.01 |
| Feb | 0.79 | 0.76 | 0.03 |
| Mar | 1.50 | 1.49 | 0.01 |
| Apr | 3.12 | 3.03 | 0.09 |
| May | 3.76 | 3.87 | -0.11 |
| Jun | 4.16 | 4.20 | -0.04 |
| Jul | 3.23 | 3.23 | 0.00 |
| Aug | 3.25 | 3.21 | 0.04 |
| Sep | 2.94 | 2.88 | 0.06 |
| Oct | 2.39 | 2.43 | -0.04 |
| Nov | 1.22 | 1.21 | 0.01 |
| Dec | 0.85 | 0.83 | 0.02 |
27.78 | 27.70 | 0.08 |