| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.59 | 0.58 | 0.01 |
| Feb | 0.85 | 0.77 | 0.08 |
| Mar | 1.50 | 1.48 | 0.02 |
| Apr | 3.16 | 3.07 | 0.09 |
| May | 4.21 | 4.03 | 0.18 |
| Jun | 4.36 | 4.48 | -0.12 |
| Jul | 3.25 | 3.20 | 0.05 |
| Aug | 3.57 | 3.48 | 0.09 |
| Sep | 2.90 | 2.87 | 0.03 |
| Oct | 2.42 | 2.49 | -0.07 |
| Nov | 1.31 | 1.28 | 0.03 |
| Dec | 0.86 | 0.78 | 0.08 |
28.98 | 28.51 | 0.47 |