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Official National Weather Service (NWS) point forecast and real-time wind conditions for Squam Lake (New Hampshire). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 59°F · Low 41°F
Peak gusts: 25 mph · Lake surface chop expected
Humidity: 39% · Barometer: 29.91 inHg
USGS water monitoring available for Squam Lake.
Good for boating (79/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Wind 10 mph from the west. 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 (86/100), from 5 available inputs. Supporting this: Wind 10 mph from the west. Afternoon hours (17:00 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 (78/100), from 5 available inputs. Supporting this: Wind 10 mph from the west. 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. 6% 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 |
|---|---|---|---|---|---|---|
| 5 PM | 59°F | 10 mph | W | ⚡ 24 mph | 6% | Sunny |
| 6 PM | 58°F | 10 mph | W | ⚡ 21 mph | 2% | Clear |
| 7 PM | 55°F | 10 mph | W | ⚡ 17 mph | 11% | Clear |
| 8 PM | 49°F | 5 mph | W | ⚡ 14 mph | 11% | Partly Cloudy |
| 9 PM | 48°F | 5 mph | W | ⚡ 14 mph | 2% | Partly Cloudy |
| 10 PM | 47°F | 5 mph | W | ⚡ 14 mph | 1% | Mostly Clear |
| 11 PM | 46°F | 10 mph | W | ⚡ 17 mph | 0% | Mostly Clear |
| 12 AM | 45°F | 10 mph | W | ⚡ 17 mph | 0% | Clear |
| 1 AM | 44°F | 10 mph | W | ⚡ 20 mph | 0% | Clear |
| 2 AM | 44°F | 10 mph | W | ⚡ 17 mph | 0% | Mostly Clear |
| 3 AM | 43°F | 10 mph | W | ⚡ 16 mph | 0% | Mostly Clear |
| 4 AM | 42°F | 5 mph | W | ⚡ 14 mph | 0% | Mostly Clear |
| 5 AM | 42°F | 5 mph | W | ⚡ 12 mph | 0% | Mostly Clear |
| 6 AM | 41°F | 5 mph | W | ⚡ 9 mph | 0% | Sunny |
| 7 AM | 41°F | 5 mph | W | ⚡ 9 mph | 0% | Sunny |
| 8 AM | 42°F | 5 mph | W | ⚡ 9 mph | 0% | Sunny |
| 9 AM | 45°F | 5 mph | W | ⚡ 9 mph | 0% | Sunny |
| 10 AM | 46°F | 5 mph | NW | ⚡ 12 mph | 0% | Sunny |
| 11 AM | 49°F | 5 mph | NW | ⚡ 12 mph | 0% | Sunny |
| 12 PM | 52°F | 5 mph | NW | ⚡ 14 mph | 0% | Sunny |
| 1 PM | 54°F | 5 mph | NW | ⚡ 14 mph | 0% | Sunny |
| 2 PM | 56°F | 5 mph | NW | ⚡ 14 mph | 0% | Sunny |
| 3 PM | 56°F | 5 mph | NW | ⚡ 14 mph | 0% | Sunny |
| 4 PM | 57°F | 5 mph | NW | ⚡ 12 mph | 0% | 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.
Isolated rain showers before 4pm. Sunny, with a high near 60. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Mostly clear, with a low around 40. West wind 5 to 10 mph, with gusts as high as 25 mph.
Sunny, with a high near 57. West wind around 5 mph.
Mostly clear, with a low around 35. Northwest wind 0 to 5 mph.
Partly sunny, with a high near 62. Southwest wind 0 to 5 mph.
Rain. Cloudy, with a low around 52. Chance of precipitation is 90%.
Rain likely before 1pm. Partly sunny, with a high near 66. Chance of precipitation is 70%.
A chance of rain showers after 1am. Partly cloudy, with a low around 50. Chance of precipitation is 40%.
Rain showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Rain showers likely. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.
A chance of rain showers before noon. Partly sunny, with a high near 55. Chance of precipitation is 40%.
Partly cloudy, with a low around 39.
Sunny, with a high near 55.
Partly cloudy, with a low around 41.
Squam Lake currently reports 61°F with wind velocity near 14 mph from the W. 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 Squam 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 GYX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Squam 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 Squam Lake Water Level & Temperature page.
View Squam Lake Water Level & Temperature →