| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.74 | 3.89 | -0.15 | 
| Feb | 3.66 | 3.68 | -0.02 | 
| Mar | 4.64 | 4.78 | -0.14 | 
| Apr | 5.04 | 5.11 | -0.07 | 
| May | 4.92 | 5.12 | -0.20 | 
| Jun | 4.50 | 4.60 | -0.10 | 
| Jul | 4.13 | 4.10 | 0.03 | 
| Aug | 3.22 | 2.96 | 0.26 | 
| Sep | 3.36 | 3.50 | -0.14 | 
| Oct | 3.82 | 3.84 | -0.02 | 
| Nov | 4.19 | 4.20 | -0.01 | 
| Dec | 4.16 | 4.25 | -0.09 | 
| 49.38 | 50.03 | -0.65 |