| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.75 | 0.74 | 0.01 |
| Feb | 0.80 | 0.76 | 0.04 |
| Mar | 1.33 | 1.30 | 0.03 |
| Apr | 2.33 | 2.29 | 0.04 |
| May | 3.26 | 3.45 | -0.19 |
| Jun | 4.57 | 4.61 | -0.04 |
| Jul | 4.35 | 4.41 | -0.06 |
| Aug | 3.71 | 3.75 | -0.04 |
| Sep | 3.19 | 3.20 | -0.01 |
| Oct | 2.90 | 2.99 | -0.09 |
| Nov | 1.51 | 1.43 | 0.08 |
| Dec | 1.11 | 1.13 | -0.02 |
29.81 | 30.06 | -0.25 |