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Official National Weather Service (NWS) point forecast and real-time wind conditions for Jamestown Reservoir (North Dakota). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 76°F · Low 48°F
Peak gusts: 20 mph · Lake surface chop expected
Humidity: 81% · Barometer: 29.95 inHg
USGS water monitoring available for Jamestown Reservoir.
Good for boating (83/100), from 4 available inputs. Supporting this: Wind 9 mph from the southeast. 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 (88/100), from 5 available inputs. Supporting this: Wind 9 mph from the southeast. Morning hours (09:00 local). 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 (81/100), from 5 available inputs. Supporting this: Wind 9 mph from the southeast. 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. 1% chance of precipitation. Working against it: Air temperature 48°F. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 9 AM | 48°F | 9 mph | SE | ⚡ 21 mph | 1% | Sunny |
| 10 AM | 54°F | 10 mph | S | ⚡ 22 mph | 1% | Sunny |
| 11 AM | 59°F | 13 mph | S | ⚡ 23 mph | 1% | Sunny |
| 12 PM | 62°F | 16 mph | S | ⚡ 25 mph | 0% | Sunny |
| 1 PM | 66°F | 17 mph | S | ⚡ 28 mph | 1% | Sunny |
| 2 PM | 71°F | 18 mph | S | ⚡ 29 mph | 0% | Sunny |
| 3 PM | 74°F | 20 mph | S | ⚡ 29 mph | 0% | Sunny |
| 4 PM | 75°F | 20 mph | S | ⚡ 29 mph | 0% | Sunny |
| 5 PM | 76°F | 17 mph | S | ⚡ 29 mph | 0% | Mostly Sunny |
| 6 PM | 75°F | 15 mph | S | ⚡ 27 mph | 0% | Partly Cloudy |
| 7 PM | 72°F | 14 mph | S | ⚡ 25 mph | 0% | Mostly Cloudy |
| 8 PM | 69°F | 14 mph | SE | ⚡ 27 mph | 0% | Mostly Cloudy |
| 9 PM | 65°F | 15 mph | S | ⚡ 27 mph | 0% | Partly Cloudy |
| 10 PM | 64°F | 15 mph | S | ⚡ 25 mph | 0% | Partly Cloudy |
| 11 PM | 62°F | 14 mph | S | ⚡ 23 mph | 0% | Partly Cloudy |
| 12 AM | 61°F | 12 mph | S | ⚡ 21 mph | 0% | Partly Cloudy |
| 1 AM | 61°F | 10 mph | S | ⚡ 20 mph | 0% | Partly Cloudy |
| 2 AM | 60°F | 9 mph | S | ⚡ 18 mph | 1% | Mostly Cloudy |
| 3 AM | 59°F | 9 mph | S | ⚡ 16 mph | 1% | Partly Cloudy |
| 4 AM | 57°F | 8 mph | SE | ⚡ 15 mph | 1% | Partly Cloudy |
| 5 AM | 57°F | 9 mph | S | ⚡ 16 mph | 0% | Partly Cloudy |
| 6 AM | 56°F | 9 mph | S | ⚡ 16 mph | 0% | Mostly Sunny |
| 7 AM | 55°F | 9 mph | S | ⚡ 17 mph | 1% | Mostly Sunny |
| 8 AM | 57°F | 10 mph | S | ⚡ 18 mph | 1% | Mostly Sunny |
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.
Sunny, with a high near 76. South wind 9 to 20 mph, with gusts as high as 29 mph.
Partly cloudy. Low around 54, with temperatures rising to around 57 overnight. Southeast wind 8 to 15 mph, with gusts as high as 26 mph.
Mostly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Partly cloudy, with a low around 48. Northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Mostly cloudy, with a high near 57. North wind 15 to 18 mph, with gusts as high as 29 mph.
A slight chance of rain showers after 7pm. Cloudy, with a low around 38. North wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a high near 50. North wind around 14 mph, with gusts as high as 24 mph.
A chance of rain showers before 1am. Mostly cloudy, with a low around 34. North wind 6 to 10 mph, with gusts as high as 18 mph.
Mostly cloudy, with a high near 55. North wind 5 to 8 mph.
A slight chance of rain showers after 7pm. Mostly cloudy, with a low around 36. East wind around 6 mph.
A chance of rain showers. Partly sunny, with a high near 58. East wind 7 to 15 mph, with gusts as high as 25 mph.
Rain showers likely. Mostly cloudy, with a low around 39. Northeast wind 9 to 15 mph, with gusts as high as 24 mph.
Rain showers likely. Mostly cloudy, with a high near 56. Northwest wind 15 to 24 mph, with gusts as high as 37 mph.
A chance of rain showers. Mostly cloudy, with a low around 34.
Jamestown Reservoir currently reports 45°F with wind velocity near 11 mph from the S. 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 Jamestown 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 BIS) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Jamestown 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 Jamestown Reservoir Water Level & Temperature page.
View Jamestown Reservoir Water Level & Temperature →