| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.06 | 4.23 | -0.17 |
| Feb | 3.64 | 3.70 | -0.06 |
| Mar | 5.20 | 5.16 | 0.04 |
| Apr | 4.38 | 4.40 | -0.02 |
| May | 3.52 | 3.56 | -0.04 |
| Jun | 3.63 | 3.67 | -0.04 |
| Jul | 2.96 | 2.97 | -0.01 |
| Aug | 3.62 | 3.67 | -0.05 |
| Sep | 4.17 | 4.18 | -0.01 |
| Oct | 5.03 | 4.76 | 0.27 |
| Nov | 4.41 | 4.28 | 0.13 |
| Dec | 4.92 | 5.18 | -0.26 |
49.54 | 49.76 | -0.22 |