| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.57 | 0.58 | -0.01 |
| Feb | 0.69 | 0.72 | -0.03 |
| Mar | 1.43 | 1.43 | 0.00 |
| Apr | 2.62 | 2.75 | -0.13 |
| May | 4.63 | 4.64 | -0.01 |
| Jun | 3.98 | 4.02 | -0.04 |
| Jul | 3.48 | 3.45 | 0.03 |
| Aug | 3.27 | 3.36 | -0.09 |
| Sep | 2.18 | 2.13 | 0.05 |
| Oct | 2.14 | 2.11 | 0.03 |
| Nov | 1.20 | 1.18 | 0.02 |
| Dec | 0.85 | 0.88 | -0.03 |
27.04 | 27.25 | -0.21 |