| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.69 | 0.74 | -0.05 |
| Feb | 0.81 | 0.84 | -0.03 |
| Mar | 1.44 | 1.47 | -0.03 |
| Apr | 2.78 | 2.80 | -0.02 |
| May | 4.03 | 4.08 | -0.05 |
| Jun | 4.48 | 4.40 | 0.08 |
| Jul | 3.93 | 3.93 | 0.00 |
| Aug | 4.05 | 4.23 | -0.18 |
| Sep | 3.27 | 3.26 | 0.01 |
| Oct | 2.61 | 2.60 | 0.01 |
| Nov | 1.42 | 1.46 | -0.04 |
| Dec | 1.00 | 1.10 | -0.10 |
30.51 | 30.91 | -0.40 |