| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.44 | 3.48 | -0.04 |
| Feb | 2.93 | 2.80 | 0.13 |
| Mar | 3.35 | 3.32 | 0.03 |
| Apr | 3.52 | 3.26 | 0.26 |
| May | 4.69 | 4.96 | -0.27 |
| Jun | 4.32 | 4.33 | -0.01 |
| Jul | 2.49 | 2.46 | 0.03 |
| Aug | 3.67 | 3.57 | 0.10 |
| Sep | 3.91 | 3.86 | 0.05 |
| Oct | 4.69 | 4.19 | 0.50 |
| Nov | 4.15 | 4.07 | 0.08 |
| Dec | 3.44 | 3.62 | -0.18 |
44.60 | 43.92 | 0.68 |