| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.60 | 3.58 | 0.02 |
| Feb | 3.77 | 3.57 | 0.20 |
| Mar | 4.37 | 4.23 | 0.14 |
| Apr | 4.27 | 4.27 | 0.00 |
| May | 4.87 | 5.00 | -0.13 |
| Jun | 4.73 | 4.85 | -0.12 |
| Jul | 5.10 | 5.05 | 0.05 |
| Aug | 4.10 | 3.87 | 0.23 |
| Sep | 3.36 | 3.52 | -0.16 |
| Oct | 3.27 | 3.11 | 0.16 |
| Nov | 3.15 | 3.00 | 0.15 |
| Dec | 4.26 | 4.32 | -0.06 |
48.85 | 48.37 | 0.48 |