| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.85 | -0.07 |
| Feb | 0.86 | 0.87 | -0.01 |
| Mar | 1.54 | 1.44 | 0.10 |
| Apr | 2.80 | 2.86 | -0.06 |
| May | 4.10 | 4.09 | 0.01 |
| Jun | 4.40 | 4.46 | -0.06 |
| Jul | 4.34 | 4.38 | -0.04 |
| Aug | 4.11 | 3.90 | 0.21 |
| Sep | 3.27 | 3.26 | 0.01 |
| Oct | 2.92 | 2.86 | 0.06 |
| Nov | 1.69 | 1.63 | 0.06 |
| Dec | 1.15 | 1.23 | -0.08 |
31.96 | 31.83 | 0.13 |