| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.70 | 0.69 | 0.01 |
| Feb | 0.88 | 0.82 | 0.06 |
| Mar | 1.85 | 1.72 | 0.13 |
| Apr | 2.64 | 2.42 | 0.22 |
| May | 2.57 | 2.51 | 0.06 |
| Jun | 1.92 | 1.98 | -0.06 |
| Jul | 2.32 | 2.87 | -0.55 |
| Aug | 2.28 | 2.41 | -0.13 |
| Sep | 1.60 | 1.64 | -0.04 |
| Oct | 1.33 | 1.25 | 0.08 |
| Nov | 0.91 | 0.83 | 0.08 |
| Dec | 0.74 | 0.66 | 0.08 |
19.74 | 19.80 | -0.06 |