| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.77 | 4.36 | 0.41 |
| Feb | 3.32 | 2.91 | 0.41 |
| Mar | 3.29 | 2.90 | 0.39 |
| Apr | 2.57 | 2.45 | 0.12 |
| May | 1.90 | 1.68 | 0.22 |
| Jun | 1.00 | 1.01 | -0.01 |
| Jul | 0.36 | 0.40 | -0.04 |
| Aug | 0.34 | 0.33 | 0.01 |
| Sep | 0.70 | 0.68 | 0.02 |
| Oct | 2.20 | 1.98 | 0.22 |
| Nov | 4.37 | 4.25 | 0.12 |
| Dec | 5.78 | 5.74 | 0.04 |
30.60 | 28.69 | 1.91 |