| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.90 | 2.82 | 0.08 |
| Feb | 2.32 | 2.24 | 0.08 |
| Mar | 2.98 | 3.06 | -0.08 |
| Apr | 3.72 | 3.75 | -0.03 |
| May | 3.78 | 3.88 | -0.10 |
| Jun | 4.20 | 4.08 | 0.12 |
| Jul | 4.16 | 4.22 | -0.06 |
| Aug | 3.52 | 3.46 | 0.06 |
| Sep | 3.69 | 3.74 | -0.05 |
| Oct | 3.31 | 3.23 | 0.08 |
| Nov | 2.76 | 2.82 | -0.06 |
| Dec | 2.88 | 2.89 | -0.01 |
40.22 | 40.19 | 0.03 |