| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.66 | 0.68 | -0.02 |
| Feb | 0.76 | 0.78 | -0.02 |
| Mar | 1.57 | 1.56 | 0.01 |
| Apr | 3.26 | 3.23 | 0.03 |
| May | 4.20 | 4.34 | -0.14 |
| Jun | 4.73 | 4.65 | 0.08 |
| Jul | 3.62 | 3.55 | 0.07 |
| Aug | 3.65 | 3.59 | 0.06 |
| Sep | 3.18 | 3.12 | 0.06 |
| Oct | 2.29 | 2.28 | 0.01 |
| Nov | 1.38 | 1.32 | 0.06 |
| Dec | 0.90 | 0.91 | -0.01 |
30.20 | 30.01 | 0.19 |