| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.62 | 3.70 | -0.08 |
| Feb | 2.98 | 2.92 | 0.06 |
| Mar | 4.21 | 4.25 | -0.04 |
| Apr | 3.67 | 3.69 | -0.02 |
| May | 3.64 | 3.66 | -0.02 |
| Jun | 4.30 | 4.09 | 0.21 |
| Jul | 4.52 | 4.45 | 0.07 |
| Aug | 4.33 | 4.18 | 0.15 |
| Sep | 4.93 | 5.00 | -0.07 |
| Oct | 3.41 | 3.34 | 0.07 |
| Nov | 3.35 | 3.31 | 0.04 |
| Dec | 3.55 | 3.52 | 0.03 |
46.51 | 46.11 | 0.40 |