| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.44 | 0.02 |
| Feb | 2.84 | 2.77 | 0.07 |
| Mar | 3.90 | 3.93 | -0.03 |
| Apr | 3.47 | 3.44 | 0.03 |
| May | 4.27 | 4.37 | -0.10 |
| Jun | 3.75 | 3.89 | -0.14 |
| Jul | 4.30 | 4.23 | 0.07 |
| Aug | 3.62 | 3.75 | -0.13 |
| Sep | 4.53 | 4.58 | -0.05 |
| Oct | 3.78 | 3.68 | 0.10 |
| Nov | 3.51 | 3.46 | 0.05 |
| Dec | 3.74 | 3.67 | 0.07 |
45.17 | 45.21 | -0.04 |