| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.50 | 3.53 | -0.03 |
| Feb | 3.54 | 3.51 | 0.03 |
| Mar | 4.51 | 4.42 | 0.09 |
| Apr | 4.45 | 4.39 | 0.06 |
| May | 5.16 | 5.32 | -0.16 |
| Jun | 4.69 | 4.69 | 0.00 |
| Jul | 5.34 | 5.31 | 0.03 |
| Aug | 3.83 | 3.69 | 0.14 |
| Sep | 3.81 | 3.76 | 0.05 |
| Oct | 3.42 | 3.30 | 0.12 |
| Nov | 3.30 | 3.24 | 0.06 |
| Dec | 4.19 | 4.21 | -0.02 |
49.74 | 49.37 | 0.37 |