| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.28 | 1.26 | 0.02 |
| Feb | 1.50 | 1.51 | -0.01 |
| Mar | 2.16 | 2.11 | 0.05 |
| Apr | 3.77 | 3.83 | -0.06 |
| May | 4.23 | 4.31 | -0.08 |
| Jun | 5.54 | 5.60 | -0.06 |
| Jul | 4.70 | 4.66 | 0.04 |
| Aug | 3.98 | 3.91 | 0.07 |
| Sep | 3.64 | 3.67 | -0.03 |
| Oct | 2.98 | 2.97 | 0.01 |
| Nov | 2.27 | 2.26 | 0.01 |
| Dec | 1.72 | 1.76 | -0.04 |
37.77 | 37.85 | -0.08 |