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Official National Weather Service (NWS) point forecast and real-time wind conditions for Willow Reservoir (Wisconsin). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 81°F · Low 59°F
Peak gusts: 19 mph · Lake surface chop expected
Humidity: 56% · Barometer: 29.96 inHg
USGS water monitoring available for Willow Reservoir.
Good for boating (81/100), from 4 available inputs. Supporting this: Wind 9 mph from the south. 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 (82/100), from 5 available inputs. Supporting this: Wind 9 mph from the south. 0% 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 (80/100), from 5 available inputs. Supporting this: Wind 9 mph from the south. 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. 0% chance of precipitation. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 3 AM | 63°F | 9 mph | S | ⚡ 23 mph | 0% | Clear |
| 4 AM | 62°F | 9 mph | S | ⚡ 23 mph | 0% | Clear |
| 5 AM | 61°F | 9 mph | S | ⚡ 23 mph | 0% | Clear |
| 6 AM | 61°F | 8 mph | S | ⚡ 22 mph | 0% | Sunny |
| 7 AM | 59°F | 9 mph | S | ⚡ 21 mph | 1% | Sunny |
| 8 AM | 62°F | 9 mph | S | ⚡ 22 mph | 1% | Sunny |
| 9 AM | 64°F | 8 mph | S | ⚡ 22 mph | 1% | Sunny |
| 10 AM | 68°F | 8 mph | S | ⚡ 22 mph | 1% | Sunny |
| 11 AM | 72°F | 8 mph | SW | ⚡ 21 mph | 1% | Sunny |
| 12 PM | 75°F | 9 mph | SW | ⚡ 20 mph | 1% | Sunny |
| 1 PM | 78°F | 9 mph | SW | ⚡ 20 mph | 1% | Sunny |
| 2 PM | 80°F | 9 mph | SW | ⚡ 20 mph | 1% | Sunny |
| 3 PM | 81°F | 9 mph | SW | ⚡ 20 mph | 1% | Mostly Sunny |
| 4 PM | 80°F | 8 mph | SW | ⚡ 18 mph | 1% | Mostly Sunny |
| 5 PM | 78°F | 7 mph | SW | ⚡ 17 mph | 2% | Mostly Sunny |
| 6 PM | 74°F | 5 mph | S | ⚡ 14 mph | 1% | Partly Cloudy |
| 7 PM | 71°F | 3 mph | S | ⚡ 13 mph | 1% | Partly Cloudy |
| 8 PM | 68°F | 3 mph | S | ⚡ 13 mph | 1% | Partly Cloudy |
| 9 PM | 67°F | 3 mph | S | ⚡ 13 mph | 1% | Mostly Cloudy |
| 10 PM | 66°F | 3 mph | S | ⚡ 14 mph | 1% | Mostly Cloudy |
| 11 PM | 65°F | 2 mph | S | ⚡ 13 mph | 2% | Mostly Cloudy |
| 12 AM | 65°F | 2 mph | S | ⚡ 12 mph | 2% | Mostly Cloudy |
| 1 AM | 64°F | 2 mph | S | ⚡ 12 mph | 2% | Mostly Cloudy |
| 2 AM | 63°F | 2 mph | S | ⚡ 9 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.
Clear. Low around 59, with temperatures rising to around 61 overnight. South wind around 9 mph, with gusts as high as 23 mph.
Sunny. High near 81, with temperatures falling to around 78 in the afternoon. Heat index values as high as 80. South wind around 9 mph, with gusts as high as 22 mph.
Mostly cloudy, with a low around 60. South southeast wind around 5 mph.
Mostly cloudy, with a high near 80. Heat index values as high as 81. Northeast wind 1 to 5 mph.
Rain showers likely between 7pm and 10pm, then showers and thunderstorms. Mostly cloudy, with a low around 50. North northeast wind around 5 mph. Chance of precipitation is 80%.
Rain showers before 7am. Mostly cloudy, with a high near 60. Chance of precipitation is 80%.
Mostly cloudy, with a low around 42.
Partly sunny, with a high near 59.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 39. Chance of precipitation is 20%.
A chance of rain showers. Partly sunny, with a high near 59. Chance of precipitation is 40%.
A chance of rain showers. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.
A chance of rain showers before 10pm, then a slight chance of rain and snow showers between 10pm and 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Mostly sunny, with a high near 50.
Willow Reservoir currently reports 64°F with wind velocity near 10 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 Willow 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 GRB) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Willow 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 Willow Reservoir Water Level & Temperature page.
View Willow Reservoir Water Level & Temperature →