| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.56 | 0.59 | -0.03 |
| Feb | 0.62 | 0.63 | -0.01 |
| Mar | 1.40 | 1.34 | 0.06 |
| Apr | 1.94 | 1.88 | 0.06 |
| May | 3.08 | 3.15 | -0.07 |
| Jun | 3.50 | 3.34 | 0.16 |
| Jul | 3.29 | 3.10 | 0.19 |
| Aug | 3.08 | 3.06 | 0.02 |
| Sep | 1.50 | 1.47 | 0.03 |
| Oct | 1.98 | 1.94 | 0.04 |
| Nov | 0.78 | 0.76 | 0.02 |
| Dec | 0.87 | 0.90 | -0.03 |
22.60 | 22.16 | 0.44 |