| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.54 | 0.56 | -0.02 |
| Feb | 0.75 | 0.76 | -0.01 |
| Mar | 1.40 | 1.38 | 0.02 |
| Apr | 2.74 | 2.87 | -0.13 |
| May | 3.60 | 3.64 | -0.04 |
| Jun | 4.35 | 4.35 | 0.00 |
| Jul | 3.37 | 3.40 | -0.03 |
| Aug | 3.34 | 3.41 | -0.07 |
| Sep | 2.93 | 3.00 | -0.07 |
| Oct | 2.14 | 2.13 | 0.01 |
| Nov | 1.09 | 1.12 | -0.03 |
| Dec | 0.79 | 0.85 | -0.06 |
27.04 | 27.47 | -0.43 |