| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.45 | 1.40 | 0.05 |
| Feb | 1.81 | 1.78 | 0.03 |
| Mar | 2.58 | 2.46 | 0.12 |
| Apr | 3.91 | 3.82 | 0.09 |
| May | 5.50 | 5.49 | 0.01 |
| Jun | 5.15 | 5.16 | -0.01 |
| Jul | 4.43 | 4.53 | -0.10 |
| Aug | 4.07 | 4.00 | 0.07 |
| Sep | 3.97 | 3.92 | 0.05 |
| Oct | 3.24 | 3.19 | 0.05 |
| Nov | 2.42 | 2.35 | 0.07 |
| Dec | 1.75 | 1.72 | 0.03 |
40.28 | 39.82 | 0.46 |