| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.69 | 0.79 | -0.10 |
| Feb | 0.80 | 0.87 | -0.07 |
| Mar | 1.46 | 1.56 | -0.10 |
| Apr | 2.81 | 2.88 | -0.07 |
| May | 4.11 | 4.20 | -0.09 |
| Jun | 4.44 | 4.42 | 0.02 |
| Jul | 4.04 | 4.29 | -0.25 |
| Aug | 4.00 | 4.04 | -0.04 |
| Sep | 3.18 | 3.31 | -0.13 |
| Oct | 2.76 | 2.73 | 0.03 |
| Nov | 1.51 | 1.60 | -0.09 |
| Dec | 1.01 | 1.15 | -0.14 |
30.81 | 31.84 | -1.03 |