| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.29 | 2.36 | -0.07 |
| Feb | 1.98 | 2.06 | -0.08 |
| Mar | 2.78 | 2.76 | 0.02 |
| Apr | 4.11 | 4.03 | 0.08 |
| May | 4.45 | 4.41 | 0.04 |
| Jun | 4.81 | 4.65 | 0.16 |
| Jul | 4.22 | 4.16 | 0.06 |
| Aug | 3.26 | 3.15 | 0.11 |
| Sep | 3.01 | 3.04 | -0.03 |
| Oct | 3.33 | 3.27 | 0.06 |
| Nov | 3.23 | 3.23 | 0.00 |
| Dec | 2.38 | 2.43 | -0.05 |
39.85 | 39.55 | 0.30 |