| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.80 | 0.78 | 0.02 |
| Feb | 0.84 | 0.87 | -0.03 |
| Mar | 1.69 | 1.70 | -0.01 |
| Apr | 3.32 | 3.35 | -0.03 |
| May | 4.40 | 4.41 | -0.01 |
| Jun | 4.84 | 4.76 | 0.08 |
| Jul | 3.89 | 4.09 | -0.20 |
| Aug | 3.76 | 3.79 | -0.03 |
| Sep | 3.20 | 3.16 | 0.04 |
| Oct | 2.31 | 2.40 | -0.09 |
| Nov | 1.41 | 1.38 | 0.03 |
| Dec | 1.18 | 1.18 | 0.00 |
31.64 | 31.87 | -0.23 |