Java, South Dakota has a Humid Continental Hot Summers With Dry Winters climate (Köppen classification: Dwa). Average annual temperatures range from 31.9 °F (low) to 53.7 °F (high). Annual precipitation averages 19.6 Inches. Java is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.8 °F | 21.9 °F | 0.44 in. |
| February | 7.8 °F | 26.5 °F | 0.6 in. |
| March | 18.2 °F | 38.9 °F | 0.82 in. |
| April | 30.2 °F | 53.7 °F | 1.65 in. |
| May | 42.8 °F | 66.5 °F | 2.91 in. |
| June | 53.8 °F | 76.6 °F | 3.46 in. |
| July | 58.6 °F | 82.5 °F | 2.94 in. |
| August | 56.6 °F | 81.7 °F | 2.23 in. |
| September | 46.9 °F | 72.4 °F | 1.72 in. |
| October | 33.7 °F | 56.3 °F | 1.75 in. |
| November | 20.4 °F | 40.2 °F | 0.56 in. |
| December | 9.4 °F | 26.7 °F | 0.52 in. |
| Annual | 31.9 °F | 53.7 °F | 19.6 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dwa - Humid Continental Hot Summers With Dry Winters |