| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.52 | 0.43 | 0.09 |
| Feb | 0.76 | 0.65 | 0.11 |
| Mar | 1.16 | 0.96 | 0.20 |
| Apr | 2.26 | 2.03 | 0.23 |
| May | 3.02 | 2.72 | 0.30 |
| Jun | 1.99 | 2.50 | -0.51 |
| Jul | 1.31 | 1.74 | -0.43 |
| Aug | 1.15 | 1.16 | -0.01 |
| Sep | 1.13 | 1.18 | -0.05 |
| Oct | 1.27 | 1.24 | 0.03 |
| Nov | 0.77 | 0.71 | 0.06 |
| Dec | 0.67 | 0.56 | 0.11 |
16.01 | 15.88 | 0.13 |