| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.50 | 0.53 | -0.03 |
| Feb | 0.67 | 0.68 | -0.01 |
| Mar | 1.40 | 1.39 | 0.01 |
| Apr | 2.97 | 2.96 | 0.01 |
| May | 4.02 | 3.96 | 0.06 |
| Jun | 4.14 | 3.98 | 0.16 |
| Jul | 3.44 | 3.11 | 0.33 |
| Aug | 2.99 | 3.19 | -0.20 |
| Sep | 2.14 | 2.13 | 0.01 |
| Oct | 1.98 | 2.03 | -0.05 |
| Nov | 1.00 | 1.00 | 0.00 |
| Dec | 0.67 | 0.71 | -0.04 |
25.92 | 25.67 | 0.25 |