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Official National Weather Service (NWS) point forecast and real-time wind conditions for Union Lake (New Jersey). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 67°F · Low 65°F
Peak gusts: 27 mph · Lake surface chop expected
Humidity: 85% · Barometer: 29.92 inHg
USGS water monitoring available for Union Lake.
Very Poor / Avoid for boating (34/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Working against it: Gusts to 29 mph. 83% chance of precipitation is likely. The forecast mentions thunderstorms, which carries a risk penalty. 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.
Poor for fishing (35/100), from 5 available inputs. Supporting this: Sky is overcast (89% cloud cover). Air temperature 65°F. Working against it: 83% chance of precipitation is likely. The forecast mentions thunderstorms, which carries a risk penalty. 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.
Poor for kayaking (35/100), from 5 available inputs. Supporting this: No active official alerts for this lake. Air temperature 65°F. Working against it: Gusts to 29 mph. 83% chance of precipitation is likely. The forecast mentions thunderstorms, which carries a risk penalty. 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 15 mph from the east. Working against it: 83% chance of precipitation is likely. The forecast mentions thunderstorms, which carries a risk penalty. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 1 PM | 65°F | 15 mph | E | ⚡ 29 mph | 83% | Rain |
| 2 PM | 66°F | 15 mph | E | ⚡ 29 mph | 95% | Rain |
| 3 PM | 66°F | 15 mph | E | ⚡ 28 mph | 89% | Rain |
| 4 PM | 67°F | 10 mph | E | ⚡ 24 mph | 81% | Rain |
| 5 PM | 67°F | 10 mph | E | ⚡ 20 mph | 53% | Chance Rain |
| 6 PM | 67°F | 10 mph | E | ⚡ 18 mph | 40% | Chance Light Rain |
| 7 PM | 67°F | 5 mph | SE | ⚡ 14 mph | 41% | Chance Light Rain |
| 8 PM | 67°F | 5 mph | SE | ⚡ 10 mph | 59% | Light Rain Likely |
| 9 PM | 67°F | 5 mph | SE | ⚡ 8 mph | 79% | Rain |
| 10 PM | 67°F | 5 mph | SE | ⚡ 7 mph | 76% | Rain |
| 11 PM | 67°F | 5 mph | SE | ⚡ 8 mph | 79% | Rain |
| 12 AM | 67°F | 5 mph | SE | ⚡ 8 mph | 64% | Showers And Thunderstorms Likely |
| 1 AM | 67°F | 5 mph | SE | ⚡ 8 mph | 65% | Showers And Thunderstorms Likely |
| 2 AM | 67°F | 5 mph | E | ⚡ 7 mph | 41% | Chance Rain Showers |
| 3 AM | 67°F | 5 mph | E | ⚡ 7 mph | 50% | Chance Rain Showers |
| 4 AM | 66°F | 5 mph | NE | ⚡ 9 mph | 57% | Rain Showers Likely |
| 5 AM | 66°F | 5 mph | N | ⚡ 10 mph | 63% | Showers And Thunderstorms Likely |
| 6 AM | 65°F | 5 mph | N | ⚡ 12 mph | 77% | Showers And Thunderstorms |
| 7 AM | 63°F | 5 mph | N | ⚡ 13 mph | 77% | Showers And Thunderstorms |
| 8 AM | 62°F | 10 mph | N | ⚡ 15 mph | 52% | Chance Rain Showers |
| 9 AM | 64°F | 10 mph | N | ⚡ 17 mph | 46% | Chance Rain Showers |
| 10 AM | 64°F | 10 mph | N | ⚡ 20 mph | 18% | Slight Chance Rain Showers |
| 11 AM | 63°F | 10 mph | N | ⚡ 20 mph | 2% | Mostly Cloudy |
| 12 PM | 65°F | 10 mph | N | ⚡ 21 mph | 0% | 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 5pm, then a chance of rain and a slight chance of thunderstorms. Cloudy, with a high near 68. East wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Rain and a chance of thunderstorms before midnight, then showers and thunderstorms likely. Cloudy, with a low around 61. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms before 11am. Mostly cloudy, with a high near 71. North wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly clear, with a low around 53. Northwest wind 0 to 5 mph.
Sunny, with a high near 75. Southwest wind 0 to 5 mph.
Mostly clear, with a low around 63.
Sunny, with a high near 78.
A slight chance of rain showers between 8pm and 2am. Partly cloudy, with a low around 55.
Mostly sunny, with a high near 68.
A slight chance of rain showers after 2am. Partly cloudy, with a low around 51.
A chance of rain showers. Partly sunny, with a high near 69. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
A chance of rain showers. Partly sunny, with a high near 60. Chance of precipitation is 30%.
A chance of rain showers before 8pm. Mostly cloudy, with a low around 40.
Union Lake currently reports 66°F with wind velocity near 12 mph from the E. 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 Union 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 PHI) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Union 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 Union Lake Water Level & Temperature page.
View Union Lake Water Level & Temperature →