| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.43 | 3.61 | -0.18 |
| Feb | 2.93 | 2.99 | -0.06 |
| Mar | 3.86 | 3.94 | -0.08 |
| Apr | 3.69 | 4.08 | -0.39 |
| May | 3.65 | 3.66 | -0.01 |
| Jun | 4.03 | 3.76 | 0.27 |
| Jul | 4.22 | 4.11 | 0.11 |
| Aug | 3.94 | 4.48 | -0.54 |
| Sep | 3.90 | 3.97 | -0.07 |
| Oct | 3.04 | 3.32 | -0.28 |
| Nov | 3.20 | 3.33 | -0.13 |
| Dec | 3.50 | 3.89 | -0.39 |
43.39 | 45.14 | -1.75 |