| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.95 | 3.72 | 0.23 |
| Feb | 3.53 | 3.35 | 0.18 |
| Mar | 3.27 | 3.16 | 0.11 |
| Apr | 1.67 | 1.73 | -0.06 |
| May | 0.79 | 0.80 | -0.01 |
| Jun | 0.21 | 0.31 | -0.10 |
| Jul | 0.02 | 0.05 | -0.03 |
| Aug | 0.01 | 0.00 | 0.01 |
| Sep | 0.10 | 0.14 | -0.04 |
| Oct | 0.99 | 0.95 | 0.04 |
| Nov | 1.60 | 1.54 | 0.06 |
| Dec | 3.34 | 3.17 | 0.17 |
19.48 | 18.92 | 0.56 |