| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.30 | 3.26 | 0.04 |
| Feb | 2.91 | 2.86 | 0.05 |
| Mar | 3.63 | 3.62 | 0.01 |
| Apr | 3.29 | 3.42 | -0.13 |
| May | 4.63 | 4.46 | 0.17 |
| Jun | 3.48 | 3.63 | -0.15 |
| Jul | 1.82 | 1.98 | -0.16 |
| Aug | 2.49 | 2.67 | -0.18 |
| Sep | 3.40 | 3.13 | 0.27 |
| Oct | 4.37 | 4.22 | 0.15 |
| Nov | 3.16 | 3.15 | 0.01 |
| Dec | 3.69 | 3.60 | 0.09 |
40.17 | 40.00 | 0.17 |