| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.65 | 0.66 | -0.01 |
| Feb | 0.85 | 0.85 | 0.00 |
| Mar | 1.74 | 1.78 | -0.04 |
| Apr | 2.56 | 2.68 | -0.12 |
| May | 2.76 | 2.99 | -0.23 |
| Jun | 1.86 | 1.96 | -0.10 |
| Jul | 1.77 | 1.67 | 0.10 |
| Aug | 1.67 | 1.56 | 0.11 |
| Sep | 1.53 | 2.03 | -0.50 |
| Oct | 1.36 | 1.52 | -0.16 |
| Nov | 1.00 | 0.97 | 0.03 |
| Dec | 0.65 | 0.70 | -0.05 |
18.40 | 19.37 | -0.97 |