| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.45 | 0.46 | -0.01 |
| Feb | 0.50 | 0.52 | -0.02 |
| Mar | 1.10 | 1.14 | -0.04 |
| Apr | 1.58 | 1.66 | -0.08 |
| May | 2.52 | 2.76 | -0.24 |
| Jun | 3.06 | 3.03 | 0.03 |
| Jul | 3.23 | 3.11 | 0.12 |
| Aug | 2.74 | 2.87 | -0.13 |
| Sep | 1.35 | 1.37 | -0.02 |
| Oct | 1.45 | 1.47 | -0.02 |
| Nov | 0.56 | 0.55 | 0.01 |
| Dec | 0.60 | 0.73 | -0.13 |
19.14 | 19.67 | -0.53 |