| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.50 | 3.73 | -0.23 |
| Feb | 3.00 | 3.13 | -0.13 |
| Mar | 3.69 | 4.04 | -0.35 |
| Apr | 3.39 | 3.55 | -0.16 |
| May | 3.64 | 3.22 | 0.42 |
| Jun | 4.00 | 4.02 | -0.02 |
| Jul | 3.83 | 3.86 | -0.03 |
| Aug | 4.08 | 4.28 | -0.20 |
| Sep | 3.75 | 4.01 | -0.26 |
| Oct | 3.20 | 3.48 | -0.28 |
| Nov | 3.14 | 3.29 | -0.15 |
| Dec | 3.36 | 3.67 | -0.31 |
42.58 | 44.28 | -1.70 |