| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.72 | 3.99 | -0.27 |
| Feb | 3.58 | 3.77 | -0.19 |
| Mar | 2.69 | 2.92 | -0.23 |
| Apr | 1.43 | 1.55 | -0.12 |
| May | 0.95 | 0.84 | 0.11 |
| Jun | 0.19 | 0.21 | -0.02 |
| Jul | 0.01 | 0.00 | 0.01 |
| Aug | 0.02 | 0.03 | -0.01 |
| Sep | 0.08 | 0.11 | -0.03 |
| Oct | 0.86 | 1.00 | -0.14 |
| Nov | 1.75 | 1.81 | -0.06 |
| Dec | 3.26 | 3.60 | -0.34 |
18.54 | 19.83 | -1.29 |