| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.69 | 2.67 | 0.02 |
| Feb | 2.13 | 2.10 | 0.03 |
| Mar | 3.12 | 3.01 | 0.11 |
| Apr | 2.73 | 2.91 | -0.18 |
| May | 4.28 | 4.65 | -0.37 |
| Jun | 4.19 | 4.13 | 0.06 |
| Jul | 3.16 | 3.30 | -0.14 |
| Aug | 3.09 | 3.13 | -0.04 |
| Sep | 4.59 | 4.72 | -0.13 |
| Oct | 3.84 | 3.80 | 0.04 |
| Nov | 2.88 | 2.87 | 0.01 |
| Dec | 2.38 | 2.43 | -0.05 |
39.08 | 39.72 | -0.64 |