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Official National Weather Service (NWS) point forecast and real-time wind conditions for Bighorn Lake (Montana). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 43°F · Low 35°F
Peak gusts: 13 mph · Lake surface chop expected
Humidity: 100% · Barometer: 29.75 inHg
USGS water monitoring available for Bighorn Lake.
Fair for boating (68/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Wind 14 mph from the northeast. Working against it: 84% chance of precipitation is likely. 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.
Fair for fishing (58/100), from 5 available inputs. Supporting this: Wind 14 mph from the northeast. Sky is overcast (93% cloud cover). Working against it: 84% chance of precipitation is likely. 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.
Fair for kayaking (67/100), from 5 available inputs. Supporting this: No active official alerts for this lake. Wind 14 mph from the northeast. Working against it: 84% chance of precipitation is likely. 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. Wind 14 mph from the northeast. Working against it: Air temperature 43°F. 84% chance of precipitation is likely. 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 | 43°F | 14 mph | NE | ⚡ 21 mph | 84% | Rain |
| 4 PM | 43°F | 15 mph | NE | ⚡ 22 mph | 95% | Rain |
| 5 PM | 43°F | 15 mph | NE | ⚡ 22 mph | 90% | Rain |
| 6 PM | 42°F | 15 mph | NE | ⚡ 22 mph | 81% | Rain |
| 7 PM | 41°F | 16 mph | N | ⚡ 23 mph | 82% | Rain |
| 8 PM | 41°F | 17 mph | N | ⚡ 24 mph | 99% | Rain |
| 9 PM | 40°F | 17 mph | N | ⚡ 24 mph | 94% | Rain |
| 10 PM | 40°F | 18 mph | N | ⚡ 25 mph | 94% | Rain |
| 11 PM | 39°F | 17 mph | N | ⚡ 23 mph | 94% | Rain |
| 12 AM | 39°F | 16 mph | N | ⚡ 21 mph | 97% | Rain |
| 1 AM | 38°F | 16 mph | N | ⚡ 21 mph | 84% | Rain |
| 2 AM | 38°F | 16 mph | N | ⚡ 22 mph | 55% | Rain Likely |
| 3 AM | 37°F | 16 mph | N | ⚡ 22 mph | 45% | Patchy Fog |
| 4 AM | 36°F | 17 mph | N | ⚡ 23 mph | 39% | Patchy Fog |
| 5 AM | 35°F | 18 mph | NW | ⚡ 25 mph | 21% | Patchy Fog |
| 6 AM | 35°F | 20 mph | NW | ⚡ 27 mph | 44% | Areas Of Fog |
| 7 AM | 35°F | 18 mph | NW | ⚡ 25 mph | 56% | Areas Of Fog |
| 8 AM | 35°F | 17 mph | NW | ⚡ 23 mph | 51% | Areas Of Fog |
| 9 AM | 35°F | 15 mph | NW | ⚡ 21 mph | 39% | Patchy Fog |
| 10 AM | 36°F | 13 mph | NW | ⚡ 18 mph | 31% | Patchy Fog |
| 11 AM | 37°F | 12 mph | NW | ⚡ 16 mph | 18% | Patchy Fog |
| 12 PM | 38°F | 9 mph | NW | ⚡ 14 mph | 5% | Partly Sunny |
| 1 PM | 40°F | 9 mph | NW | ⚡ 14 mph | 5% | Partly Sunny |
| 2 PM | 41°F | 8 mph | NW | ⚡ 13 mph | 5% | Partly 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.
Rain before 9am, then rain and patchy fog. Cloudy, with a high near 44. Northeast wind around 13 mph. Chance of precipitation is 100%.
Rain before 3am, then rain and snow. Cloudy. Low around 34, with temperatures rising to around 36 overnight. North wind around 13 mph. Chance of precipitation is 100%.
Rain and snow likely before 9am, then a chance of rain and snow between 9am and noon. Cloudy, with a high near 41. Northwest wind 8 to 15 mph. Chance of precipitation is 70%.
A slight chance of rain showers before 9pm, then a slight chance of rain and snow showers between 9pm and midnight. Mostly cloudy, with a low around 33. Southeast wind 2 to 6 mph. Chance of precipitation is 20%.
A chance of rain and snow showers. Mostly cloudy, with a high near 51. West southwest wind 1 to 6 mph. Chance of precipitation is 40%.
Mostly cloudy, with a low around 37. West northwest wind around 3 mph.
Partly sunny, with a high near 57. Southeast wind 2 to 7 mph.
A slight chance of rain showers. Mostly cloudy, with a low around 41. West wind 5 to 8 mph. Chance of precipitation is 20%.
A slight chance of rain showers before noon. Mostly sunny. High near 56, with temperatures falling to around 53 in the afternoon. Northwest wind 9 to 14 mph. Chance of precipitation is 20%.
Partly cloudy, with a low around 35. Northwest wind around 7 mph.
Sunny. High near 60, with temperatures falling to around 57 in the afternoon. South southwest wind around 7 mph.
Mostly clear, with a low around 41. South wind 6 to 16 mph.
Sunny. High near 69, with temperatures falling to around 65 in the afternoon. Southwest wind 14 to 18 mph.
Mostly clear, with a low around 46. Southwest wind 9 to 17 mph.
Bighorn Lake currently reports 46°F with wind velocity near 10 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 Bighorn Lake 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 BYZ) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Bighorn Lake 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 Bighorn Lake Water Level & Temperature page.
View Bighorn Lake Water Level & Temperature →