| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.63 | 0.71 | -0.08 |
| Feb | 0.73 | 0.80 | -0.07 |
| Mar | 1.51 | 1.51 | 0.00 |
| Apr | 2.80 | 2.94 | -0.14 |
| May | 3.79 | 4.08 | -0.29 |
| Jun | 4.78 | 5.09 | -0.31 |
| Jul | 3.73 | 3.67 | 0.06 |
| Aug | 4.15 | 3.99 | 0.16 |
| Sep | 3.04 | 3.10 | -0.06 |
| Oct | 2.28 | 2.38 | -0.10 |
| Nov | 1.30 | 1.27 | 0.03 |
| Dec | 0.90 | 0.99 | -0.09 |
29.64 | 30.53 | -0.89 |