| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.59 | 0.56 | 0.03 |
| Feb | 0.80 | 0.78 | 0.02 |
| Mar | 1.49 | 1.48 | 0.01 |
| Apr | 3.16 | 3.10 | 0.06 |
| May | 3.65 | 3.74 | -0.09 |
| Jun | 4.03 | 4.06 | -0.03 |
| Jul | 3.25 | 3.22 | 0.03 |
| Aug | 3.27 | 3.18 | 0.09 |
| Sep | 2.90 | 2.85 | 0.05 |
| Oct | 2.40 | 2.43 | -0.03 |
| Nov | 1.19 | 1.14 | 0.05 |
| Dec | 0.86 | 0.84 | 0.02 |
27.59 | 27.38 | 0.21 |