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Official National Weather Service (NWS) point forecast and real-time wind conditions for Delavan Lake (Wisconsin). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 78°F · Low 62°F
Peak gusts: 13 mph · Lake surface chop expected
Humidity: 80% · Barometer: 30.09 inHg
USGS water monitoring available for Delavan Lake.
Excellent for boating (93/100), from 4 available inputs. Supporting this: Wind 5 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.
Excellent for fishing (91/100), from 5 available inputs. Supporting this: Wind 5 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.
Excellent for kayaking (93/100), from 5 available inputs. Supporting this: Wind 5 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. Air temperature 78°F. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 5 PM | 78°F | 5 mph | S | ⚡ 14 mph | 0% | Sunny |
| 6 PM | 73°F | 5 mph | S | ⚡ 13 mph | 0% | Mostly Clear |
| 7 PM | 69°F | 5 mph | S | ⚡ 13 mph | 0% | Clear |
| 8 PM | 66°F | 5 mph | S | ⚡ 12 mph | 0% | Clear |
| 9 PM | 64°F | 5 mph | S | ⚡ 12 mph | 0% | Clear |
| 10 PM | 63°F | 5 mph | S | ⚡ 12 mph | 0% | Mostly Clear |
| 11 PM | 62°F | 5 mph | S | ⚡ 12 mph | 0% | Mostly Clear |
| 12 AM | 62°F | 5 mph | S | ⚡ 10 mph | 0% | Partly Cloudy |
| 1 AM | 62°F | 5 mph | S | ⚡ 10 mph | 0% | Partly Cloudy |
| 2 AM | 62°F | 5 mph | S | ⚡ 10 mph | 0% | Mostly Cloudy |
| 3 AM | 62°F | 5 mph | S | ⚡ 10 mph | 0% | Mostly Cloudy |
| 4 AM | 62°F | 5 mph | S | ⚡ 12 mph | 0% | Mostly Cloudy |
| 5 AM | 62°F | 5 mph | S | ⚡ 12 mph | 0% | Mostly Cloudy |
| 6 AM | 62°F | 5 mph | SW | ⚡ 13 mph | 0% | Partly Sunny |
| 7 AM | 63°F | 10 mph | SW | ⚡ 14 mph | 0% | Partly Sunny |
| 8 AM | 65°F | 10 mph | SW | ⚡ 15 mph | 0% | Mostly Sunny |
| 9 AM | 68°F | 10 mph | SW | ⚡ 17 mph | 0% | Mostly Sunny |
| 10 AM | 71°F | 10 mph | SW | ⚡ 20 mph | 5% | Sunny |
| 11 AM | 74°F | 15 mph | SW | ⚡ 22 mph | 6% | Sunny |
| 12 PM | 78°F | 15 mph | SW | ⚡ 23 mph | 5% | Sunny |
| 1 PM | 80°F | 15 mph | SW | ⚡ 24 mph | 3% | Partly Sunny |
| 2 PM | 82°F | 15 mph | SW | ⚡ 25 mph | 3% | Sunny |
| 3 PM | 83°F | 15 mph | SW | ⚡ 25 mph | 3% | Sunny |
| 4 PM | 84°F | 15 mph | SW | ⚡ 24 mph | 4% | 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 79. South wind around 5 mph.
Partly cloudy, with a low around 61. South wind around 5 mph.
Mostly sunny, with a high near 84. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly clear, with a low around 67. Southwest wind around 10 mph.
Sunny, with a high near 78. West wind 5 to 10 mph.
A chance of rain showers after 7pm. Partly cloudy, with a low around 56. North wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 1pm. Mostly cloudy, with a high near 68. Northeast wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 51. Northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Rain showers likely. Partly sunny, with a high near 64. Chance of precipitation is 60%.
Rain showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
A slight chance of rain showers. Mostly cloudy. High near 57, with temperatures falling to around 52 in the afternoon. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 33. Chance of precipitation is 20%.
Sunny, with a high near 52.
Mostly clear, with a low around 35.
Delavan Lake currently reports 55°F with wind velocity near 5 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 Delavan 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 MKX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Delavan 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 Delavan Lake Water Level & Temperature page.
View Delavan Lake Water Level & Temperature →