| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.59 | 0.61 | -0.02 |
| Feb | 0.81 | 0.75 | 0.06 |
| Mar | 1.27 | 1.21 | 0.06 |
| Apr | 2.43 | 2.35 | 0.08 |
| May | 4.17 | 4.20 | -0.03 |
| Jun | 3.35 | 3.33 | 0.02 |
| Jul | 2.36 | 2.19 | 0.17 |
| Aug | 1.80 | 1.76 | 0.04 |
| Sep | 1.47 | 1.33 | 0.14 |
| Oct | 1.93 | 1.90 | 0.03 |
| Nov | 0.85 | 0.79 | 0.06 |
| Dec | 0.66 | 0.64 | 0.02 |
21.69 | 21.06 | 0.63 |