Weather information for the Rathbun Lake area is provided below. Average temperatures, climate details and current forecasts are included.
Climate
Monthly average temperatures and precipitation for Rathbun Lake are shown below.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 28° | 34° | 47° | 61° | 74° | 82° | 86° | 84° | 75° | 64° | 48° | 34° |
| Avg. Low | 12° | 17° | 28° | 41° | 52° | 61° | 66° | 64° | 55° | 44° | 31° | 17° |
| Daily Avg | 21° | 26° | 38° | 51° | 64° | 72° | 77° | 74° | 66° | 54° | 40° | 26° |
| Avg. Precip. | 1.0 in | 0.9 in | 2.3 in | 3.3 in | 4.0 in | 3.8 in | 4.4 in | 3.9 in | 4.3 in | 2.7 in | 2.3 in | 1.4 in |
| Note: All temperatures are in degrees Fahrenheit. | ||||||||||||
