| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.06 | 4.22 | -0.16 |
| Feb | 3.64 | 3.69 | -0.05 |
| Mar | 5.20 | 5.14 | 0.06 |
| Apr | 4.38 | 4.39 | -0.01 |
| May | 3.52 | 3.53 | -0.01 |
| Jun | 3.63 | 3.64 | -0.01 |
| Jul | 2.96 | 2.94 | 0.02 |
| Aug | 3.62 | 3.66 | -0.04 |
| Sep | 4.17 | 4.15 | 0.02 |
| Oct | 5.03 | 4.73 | 0.30 |
| Nov | 4.41 | 4.26 | 0.15 |
| Dec | 4.92 | 5.15 | -0.23 |
49.54 | 49.50 | 0.04 |