| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.54 | 0.03 |
| Feb | 3.09 | 2.89 | 0.20 |
| Mar | 4.08 | 4.00 | 0.08 |
| Apr | 3.71 | 3.62 | 0.09 |
| May | 3.58 | 3.60 | -0.02 |
| Jun | 4.30 | 4.34 | -0.04 |
| Jul | 5.16 | 5.11 | 0.05 |
| Aug | 5.26 | 5.23 | 0.03 |
| Sep | 5.53 | 5.68 | -0.15 |
| Oct | 3.33 | 3.30 | 0.03 |
| Nov | 3.28 | 3.32 | -0.04 |
| Dec | 3.50 | 3.43 | 0.07 |
48.39 | 48.06 | 0.33 |