| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.00 | 1.19 | -0.19 |
| Feb | 0.95 | 1.02 | -0.07 |
| Mar | 1.18 | 1.23 | -0.05 |
| Apr | 1.80 | 1.88 | -0.08 |
| May | 1.65 | 1.77 | -0.12 |
| Jun | 0.92 | 0.93 | -0.01 |
| Jul | 1.11 | 1.15 | -0.04 |
| Aug | 1.25 | 1.24 | 0.01 |
| Sep | 1.43 | 1.86 | -0.43 |
| Oct | 1.73 | 1.74 | -0.01 |
| Nov | 1.06 | 1.22 | -0.16 |
| Dec | 1.03 | 1.09 | -0.06 |
15.11 | 16.32 | -1.21 |