| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.58 | 0.54 | 0.04 |
| Feb | 0.76 | 0.70 | 0.06 |
| Mar | 1.37 | 1.30 | 0.07 |
| Apr | 2.60 | 2.62 | -0.02 |
| May | 3.61 | 3.59 | 0.02 |
| Jun | 4.26 | 4.30 | -0.04 |
| Jul | 3.65 | 3.46 | 0.19 |
| Aug | 3.34 | 3.32 | 0.02 |
| Sep | 2.99 | 3.03 | -0.04 |
| Oct | 2.08 | 2.10 | -0.02 |
| Nov | 1.05 | 1.00 | 0.05 |
| Dec | 0.82 | 0.80 | 0.02 |
27.11 | 26.76 | 0.35 |