| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.32 | 0.14 |
| Feb | 3.31 | 3.28 | 0.03 |
| Mar | 2.68 | 2.61 | 0.07 |
| Apr | 1.18 | 1.21 | -0.03 |
| May | 0.48 | 0.46 | 0.02 |
| Jun | 0.09 | 0.10 | -0.01 |
| Jul | 0.01 | 0.01 | 0.00 |
| Aug | 0.02 | 0.03 | -0.01 |
| Sep | 0.06 | 0.06 | 0.00 |
| Oct | 0.74 | 0.71 | 0.03 |
| Nov | 1.64 | 1.57 | 0.07 |
| Dec | 2.99 | 3.24 | -0.25 |
16.66 | 16.60 | 0.06 |