Richmond Lake, Aberdeen Weather
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Climate of Richmond Lake: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Richmond Lake, with average daytime highs around 31°C. January is the coolest, when nights typically fall to about -14°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 45°C, so the seasons feel very different from each other.
The area receives about 570 mm of rain in a typical year. Rainfall is modest in every month; June is the wettest at about 97 mm. The driest stretch is November to February, with under 20 mm a month.
For outdoor plans and travel, May to September usually offer the most comfortable weather in Richmond Lake, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | -4° | -14° | 11 mm | 85% |
| Feb | -2° | -13° | 16 mm | 79% |
| Mar | 6° | -6° | 26 mm | 71% |
| Apr | 14° | 0° | 51 mm | 63% |
| May | 21° | 7° | 83 mm | 62% |
| Jun | 27° | 14° | 97 mm | 63% |
| Jul | 31° | 18° | 75 mm | 57% |
| Aug | 29° | 16° | 67 mm | 59% |
| Sep | 24° | 10° | 60 mm | 61% |
| Oct | 14° | 2° | 49 mm | 67% |
| Nov | 5° | -5° | 15 mm | 74% |
| Dec | -3° | -11° | 19 mm | 84% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Richmond Lake. Values describe typical conditions, not a forecast.
About Richmond Lake weather
Richmond Lake is set in South Dakota's continental climate, with sharp seasonal extremes typical of the northern Great Plains, about 255 km north-west of Sioux Falls. Summers bring warm-to-hot summers (June–August) with highs in the high 20s to low 30s°C. The year winds down with cold, windy winters (December–February) with significant snow. This page shows live, auto-refreshing weather for Richmond Lake: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Chicago.
Frequently asked questions
Richmond Lake is about 255 km north-west of Sioux Falls, in South Dakota.
Richmond Lake sees cold, windy winters (December–February) with significant snow.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Richmond Lake's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Richmond Lake, with average daytime highs of about 31°C and nights around 18°C.
The coldest nights come in January, when the average low is about -14°C and daytime highs reach around -4°C. Frost is possible on clear, calm nights.
Richmond Lake receives about 570 mm of rain in a typical year. June is the wettest month at roughly 97 mm; no month averages more than 100 mm.
May to September usually offer the most comfortable weather in Richmond Lake, with mild daytime temperatures and little rain.
In November Richmond Lake typically sees daytime highs near 5°C and lows near -5°C, with about 15 mm of rain over the month and average humidity around 74%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for Richmond Lake is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
Richmond Lake's day-to-day weather follows the broader pattern of South Dakota described above. See the hourly weather forecast or the air quality index for more detail.