| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.66 | 0.67 | -0.01 |
| Feb | 0.75 | 0.77 | -0.02 |
| Mar | 1.56 | 1.54 | 0.02 |
| Apr | 3.23 | 3.21 | 0.02 |
| May | 4.18 | 4.33 | -0.15 |
| Jun | 4.71 | 4.63 | 0.08 |
| Jul | 3.62 | 3.53 | 0.09 |
| Aug | 3.63 | 3.59 | 0.04 |
| Sep | 3.18 | 3.13 | 0.05 |
| Oct | 2.28 | 2.26 | 0.02 |
| Nov | 1.36 | 1.30 | 0.06 |
| Dec | 0.89 | 0.89 | 0.00 |
30.05 | 29.85 | 0.20 |