| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.45 | 0.42 | 0.03 |
| Feb | 0.59 | 0.56 | 0.03 |
| Mar | 0.89 | 0.87 | 0.02 |
| Apr | 1.83 | 1.80 | 0.03 |
| May | 3.16 | 3.10 | 0.06 |
| Jun | 3.45 | 3.50 | -0.05 |
| Jul | 3.03 | 3.20 | -0.17 |
| Aug | 2.36 | 2.38 | -0.02 |
| Sep | 2.00 | 2.04 | -0.04 |
| Oct | 1.75 | 1.70 | 0.05 |
| Nov | 0.60 | 0.59 | 0.01 |
| Dec | 0.56 | 0.53 | 0.03 |
20.67 | 20.69 | -0.02 |