| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.60 | 3.76 | -0.16 |
| Feb | 2.99 | 3.09 | -0.10 |
| Mar | 4.33 | 4.26 | 0.07 |
| Apr | 3.72 | 3.78 | -0.06 |
| May | 3.91 | 3.73 | 0.18 |
| Jun | 4.08 | 4.14 | -0.06 |
| Jul | 4.28 | 4.17 | 0.11 |
| Aug | 4.61 | 4.50 | 0.11 |
| Sep | 3.87 | 3.82 | 0.05 |
| Oct | 4.05 | 4.21 | -0.16 |
| Nov | 3.34 | 3.45 | -0.11 |
| Dec | 4.33 | 4.54 | -0.21 |
47.11 | 47.45 | -0.34 |