| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 2.22 | 2.26 | -0.04 | 
| Feb | 1.98 | 2.11 | -0.13 | 
| Mar | 2.59 | 2.69 | -0.10 | 
| Apr | 3.97 | 3.96 | 0.01 | 
| May | 4.38 | 4.44 | -0.06 | 
| Jun | 4.52 | 4.62 | -0.10 | 
| Jul | 4.26 | 4.24 | 0.02 | 
| Aug | 3.34 | 3.18 | 0.16 | 
| Sep | 3.15 | 3.20 | -0.05 | 
| Oct | 3.26 | 3.29 | -0.03 | 
| Nov | 3.10 | 3.14 | -0.04 | 
| Dec | 2.27 | 2.37 | -0.10 | 
| 39.04 | 39.50 | -0.46 |