| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.64 | 3.78 | -0.14 |
| Feb | 3.38 | 3.43 | -0.05 |
| Mar | 4.45 | 4.62 | -0.17 |
| Apr | 4.11 | 4.27 | -0.16 |
| May | 3.59 | 3.56 | 0.03 |
| Jun | 4.11 | 4.00 | 0.11 |
| Jul | 3.54 | 3.60 | -0.06 |
| Aug | 3.53 | 3.61 | -0.08 |
| Sep | 3.78 | 3.74 | 0.04 |
| Oct | 4.60 | 4.75 | -0.15 |
| Nov | 3.87 | 3.93 | -0.06 |
| Dec | 4.65 | 4.83 | -0.18 |
47.25 | 48.12 | -0.87 |