| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.47 | 4.47 | 0.00 |
| Feb | 4.59 | 4.50 | 0.09 |
| Mar | 4.90 | 4.82 | 0.08 |
| Apr | 3.89 | 3.90 | -0.01 |
| May | 2.98 | 3.10 | -0.12 |
| Jun | 4.30 | 4.35 | -0.05 |
| Jul | 4.51 | 4.56 | -0.05 |
| Aug | 4.36 | 4.26 | 0.10 |
| Sep | 3.92 | 3.73 | 0.19 |
| Oct | 3.22 | 3.25 | -0.03 |
| Nov | 3.65 | 3.67 | -0.02 |
| Dec | 4.67 | 4.62 | 0.05 |
49.46 | 49.23 | 0.23 |