| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.59 | 3.70 | -0.11 |
| Feb | 3.27 | 3.23 | 0.04 |
| Mar | 4.29 | 4.30 | -0.01 |
| Apr | 4.20 | 4.24 | -0.04 |
| May | 3.60 | 3.54 | 0.06 |
| Jun | 4.16 | 4.12 | 0.04 |
| Jul | 3.65 | 3.67 | -0.02 |
| Aug | 3.83 | 3.83 | 0.00 |
| Sep | 3.92 | 3.88 | 0.04 |
| Oct | 4.79 | 4.69 | 0.10 |
| Nov | 3.90 | 3.83 | 0.07 |
| Dec | 4.57 | 4.66 | -0.09 |
47.77 | 47.69 | 0.08 |