| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.64 | 0.67 | -0.03 |
| Feb | 0.69 | 0.75 | -0.06 |
| Mar | 1.43 | 1.39 | 0.04 |
| Apr | 2.51 | 2.45 | 0.06 |
| May | 3.43 | 3.31 | 0.12 |
| Jun | 4.20 | 4.19 | 0.01 |
| Jul | 3.62 | 3.34 | 0.28 |
| Aug | 3.70 | 3.58 | 0.12 |
| Sep | 2.90 | 2.81 | 0.09 |
| Oct | 2.32 | 2.24 | 0.08 |
| Nov | 1.15 | 1.19 | -0.04 |
| Dec | 0.81 | 0.84 | -0.03 |
27.40 | 26.76 | 0.64 |