| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.45 | 0.51 | -0.06 |
| Feb | 0.65 | 0.62 | 0.03 |
| Mar | 0.97 | 0.99 | -0.02 |
| Apr | 2.46 | 2.64 | -0.18 |
| May | 3.41 | 3.42 | -0.01 |
| Jun | 3.75 | 4.11 | -0.36 |
| Jul | 2.73 | 2.57 | 0.16 |
| Aug | 2.62 | 2.68 | -0.06 |
| Sep | 2.13 | 2.22 | -0.09 |
| Oct | 1.74 | 1.84 | -0.10 |
| Nov | 0.69 | 0.74 | -0.05 |
| Dec | 0.50 | 0.57 | -0.07 |
22.10 | 22.91 | -0.81 |