| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.69 | 3.59 | 0.10 |
| Feb | 3.29 | 3.23 | 0.06 |
| Mar | 4.24 | 4.12 | 0.12 |
| Apr | 4.17 | 3.95 | 0.22 |
| May | 4.00 | 3.97 | 0.03 |
| Jun | 4.70 | 4.77 | -0.07 |
| Jul | 4.39 | 4.38 | 0.01 |
| Aug | 4.51 | 4.43 | 0.08 |
| Sep | 4.80 | 4.76 | 0.04 |
| Oct | 5.28 | 5.18 | 0.10 |
| Nov | 3.93 | 3.89 | 0.04 |
| Dec | 4.63 | 4.63 | 0.00 |
51.63 | 50.90 | 0.73 |