Eureka, SD
Climate overview — based on NOAA 1991-2020 normals from EUREKA, SD US.
Year-round temperatures (°F)
Climate summary
Eureka has an annual average temperature of 41.8°F with about 20.2 inches of precipitation per year and 44.3 inches of snow. The warmest month is July (average high 82.1°F), and the coldest is January (average low 1.8°F). June is typically the wettest month (3.78 in) and January the driest (0.36 in). Snow typically falls from October through April.
Best time to visit Eureka
Full guide →Climate change signal
All-time records →29 of 366 (7.9%) of Eureka's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 4 | |
| 1900s | 4 | |
| 1910s | 32 | |
| 1920s | 20 | |
| 1930s | 74 | |
| 1940s | 34 | |
| 1950s | 34 | |
| 1960s | 25 | |
| 1970s | 21 | |
| 1980s | 37 | |
| 1990s | 19 | |
| 2000s | 17 | |
| 2010s | 27 | |
| 2020s | 18 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 20.5°F | 1.8°F | 11.2°F | 0.36 in | 6.9 in | 5 |
| February | 25.0°F | 5.6°F | 15.3°F | 0.52 in | 7.6 in | 5 |
| March | 38.3°F | 17.5°F | 27.9°F | 0.82 in | 8.5 in | 6 |
| April | 54.3°F | 29.6°F | 41.9°F | 1.64 in | 4.7 in | 7 |
| May | 66.7°F | 42.2°F | 54.5°F | 3.18 in | — | 9 |
| June | 76.1°F | 52.8°F | 64.5°F | 3.78 in | — | 11 |
| July | 82.1°F | 57.8°F | 70.0°F | 3.10 in | — | 9 |
| August | 81.0°F | 55.6°F | 68.3°F | 2.24 in | — | 7 |
| September | 71.9°F | 45.9°F | 58.9°F | 1.79 in | — | 6 |
| October | 55.5°F | 31.9°F | 43.7°F | 1.74 in | 2.0 in | 6 |
| November | 38.6°F | 18.6°F | 28.6°F | 0.54 in | 6.3 in | 4 |
| December | 25.4°F | 7.8°F | 16.6°F | 0.54 in | 8.3 in | 5 |
Climate twins of Eureka
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).