| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.90 | 3.64 | 0.26 |
| Feb | 3.48 | 3.32 | 0.16 |
| Mar | 4.38 | 4.28 | 0.10 |
| Apr | 4.46 | 4.25 | 0.21 |
| May | 3.80 | 3.64 | 0.16 |
| Jun | 4.50 | 4.21 | 0.29 |
| Jul | 4.04 | 3.93 | 0.11 |
| Aug | 4.35 | 4.23 | 0.12 |
| Sep | 4.33 | 4.22 | 0.11 |
| Oct | 5.11 | 5.04 | 0.07 |
| Nov | 4.14 | 3.78 | 0.36 |
| Dec | 4.55 | 4.58 | -0.03 |
51.04 | 49.12 | 1.92 |