| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.70 | 4.03 | -0.33 |
| Feb | 3.01 | 3.19 | -0.18 |
| Mar | 4.00 | 3.78 | 0.22 |
| Apr | 3.96 | 4.15 | -0.19 |
| May | 4.52 | 4.63 | -0.11 |
| Jun | 4.66 | 4.46 | 0.20 |
| Jul | 4.00 | 4.55 | -0.55 |
| Aug | 4.18 | 3.88 | 0.30 |
| Sep | 4.85 | 5.16 | -0.31 |
| Oct | 3.59 | 3.29 | 0.30 |
| Nov | 3.61 | 3.36 | 0.25 |
| Dec | 3.80 | 4.00 | -0.20 |
47.88 | 48.48 | -0.60 |