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Official National Weather Service (NWS) point forecast and real-time wind conditions for Belle Fourche Reservoir (South Dakota). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 55°F · Low 47°F
Peak gusts: 8 mph · Lake surface chop expected
Humidity: 77% · Barometer: 29.65 inHg
USGS water monitoring available for Belle Fourche Reservoir.
Good for boating (84/100), from 4 available inputs. Supporting this: Wind 9 mph from the east. No active official alerts for this lake. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Good for fishing (81/100), from 5 available inputs. Supporting this: Wind 9 mph from the east. 3% chance of precipitation. Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Good for kayaking (82/100), from 5 available inputs. Supporting this: Wind 9 mph from the east. No active official alerts for this lake. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it. Supporting this: No active official alerts for this lake. 3% chance of precipitation. Working against it: Air temperature 54°F. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 3 PM | 54°F | 9 mph | E | ⚡ 20 mph | 3% | Mostly Cloudy |
| 4 PM | 55°F | 10 mph | E | ⚡ 22 mph | 8% | Mostly Cloudy |
| 5 PM | 55°F | 12 mph | E | ⚡ 25 mph | 5% | Mostly Cloudy |
| 6 PM | 55°F | 13 mph | E | ⚡ 29 mph | 10% | Mostly Cloudy |
| 7 PM | 55°F | 14 mph | E | ⚡ 23 mph | 38% | Chance Rain Showers |
| 8 PM | 54°F | 15 mph | E | ⚡ 23 mph | 38% | Chance Rain Showers |
| 9 PM | 52°F | 16 mph | E | ⚡ 25 mph | 43% | Chance Rain Showers |
| 10 PM | 52°F | 16 mph | E | ⚡ 25 mph | 43% | Chance Rain Showers |
| 11 PM | 50°F | 16 mph | E | ⚡ 25 mph | 39% | Chance Rain Showers |
| 12 AM | 49°F | 16 mph | E | ⚡ 25 mph | 39% | Chance Rain Showers |
| 1 AM | 49°F | 17 mph | E | ⚡ 25 mph | 40% | Chance Rain Showers |
| 2 AM | 50°F | 17 mph | E | ⚡ 25 mph | 40% | Chance Rain Showers |
| 3 AM | 50°F | 17 mph | E | ⚡ 27 mph | 18% | Slight Chance Rain Showers |
| 4 AM | 49°F | 17 mph | E | ⚡ 27 mph | 18% | Slight Chance Rain Showers |
| 5 AM | 48°F | 16 mph | E | ⚡ 27 mph | 18% | Slight Chance Rain Showers |
| 6 AM | 48°F | 15 mph | E | ⚡ 24 mph | 18% | Slight Chance Rain Showers |
| 7 AM | 47°F | 14 mph | E | ⚡ 22 mph | 8% | Cloudy |
| 8 AM | 47°F | 10 mph | SE | ⚡ 20 mph | 8% | Cloudy |
| 9 AM | 48°F | 8 mph | SW | ⚡ 17 mph | 8% | Cloudy |
| 10 AM | 50°F | 8 mph | W | ⚡ 17 mph | 7% | Cloudy |
| 11 AM | 51°F | 10 mph | W | ⚡ 21 mph | 7% | Cloudy |
| 12 PM | 52°F | 14 mph | W | ⚡ 27 mph | 7% | Cloudy |
| 1 PM | 52°F | 17 mph | W | ⚡ 30 mph | 2% | Mostly Cloudy |
| 2 PM | 53°F | 18 mph | W | ⚡ 30 mph | 2% | Mostly Cloudy |
Mirror-like to gentle rippled water. Optimal conditions for paddleboarding, kayaking, swimming, and beginner water skiing or wakeboarding.
Pleasant breeze with small wavelets. Great for sailing, pleasure cruising, pontoon boats, and trolling for trout and bass.
Moderate waves with whitecaps likely. Requires skilled boat handling; kayaks, canoes, and stand-up paddleboards should stay close to sheltered bays.
Steep waves, cold spray, and hazardous open water. Avoid small craft voyages. Always check official National Weather Service lake wind advisories.
A slight chance of rain showers before noon. Mostly cloudy. High near 59, with temperatures falling to around 57 in the afternoon. Northeast wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Mostly cloudy, with a high near 58. Northeast wind 6 to 13 mph, with gusts as high as 22 mph.
Mostly cloudy, with a high near 56. Northeast wind 7 to 13 mph, with gusts as high as 29 mph.
A chance of rain showers. Mostly cloudy. Low around 46, with temperatures rising to around 48 overnight. East wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Mostly cloudy. High near 55, with temperatures falling to around 53 in the afternoon. West wind 8 to 18 mph, with gusts as high as 30 mph.
A chance of rain after midnight. Mostly cloudy. Low around 39, with temperatures rising to around 41 overnight. Northwest wind 5 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
A chance of rain. Mostly cloudy, with a high near 51. Northeast wind around 7 mph. Chance of precipitation is 50%.
A slight chance of rain. Mostly cloudy, with a low around 40. Northwest wind around 7 mph. Chance of precipitation is 20%.
A slight chance of rain after noon. Mostly sunny, with a high near 55.
A chance of rain. Mostly cloudy, with a low around 42.
Partly sunny, with a high near 58.
Mostly clear, with a low around 34.
Sunny, with a high near 57.
Clear, with a low around 36.
Belle Fourche Reservoir currently reports 55°F with wind velocity near 7 mph from the NE. Atmospheric forecasts and 24-hour hour-by-hour wind timelines are updated hourly from the National Weather Service gridpoint matching the lake's coordinates.
At Belle Fourche Reservoir and surrounding mountain valleys, diurnal heating of the surrounding terrain causes strong thermal pressure differentials known locally as afternoon breezes (such as the Washoe Zephyr at Lake Tahoe). Wind speeds typically peak between 1:00 PM and 5:00 PM before calming near sunset.
For stand-up paddleboarding (SUP), canoeing, and light kayaks, winds under 7 mph (light breeze) offer the safest, glassiest surface conditions. Between 8–14 mph, small wavelets develop, suitable for sailboats and powerboats. Winds exceeding 15 mph create steep whitecaps and rapid drift; winds over 21 mph warrant small craft warnings.
All weather and wind telemetry is fetched directly from the National Weather Service (NOAA - WFO UNR) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Belle Fourche Reservoir without artificial smoothing or third-party estimates.
Yes. Live hydrological sensor readings, 30-day elevation histories, full-pool benchmarks, and USGS station provenance are available on our dedicated Belle Fourche Reservoir Water Level & Temperature page.
View Belle Fourche Reservoir Water Level & Temperature →