National Weather Service United States Department of Commerce
WFO BTV Lake Champlain Forecasts
Notice: Wave height forecasts represent the average of the highest one-third (33%) of waves (measured from trough to crest) that occur in a given period. Since the Significant Wave Height is an average of the largest waves, mariners should be aware that many individual waves will probably be higher.

Graphical Lake Forecast Lake Point Forecasts



Current Conditions

Last Updated on 11:00 PM EDT Thu Aug 06 2020
Location Tmp
Water Temp
Colchester Reef71NE5G6N/AN/A
Diamond Island72NW7G969.9N/A
Burton Island68NE2G5N/AN/A
Inland Sea72N1G376.00.26
Valcour Island68E373.0N/A
Champlain Bridge BuoyN/AN/AN/AN/A
Note: Marine observations listed above are maintained outside of the control of NOAA/NWS, and thus, may be old or missing at times. Colchester Reef, Diamond Island, and Burton Island are owned by the Forecast Ecosystem Monitoring Cooperative. Valcour Island and Champlain Bridge buoys are owned by SUNY Plattsburgh. Inland Sea buoy is owned by VT EPSCoR.
Current Lake Champlain Readings
Lake data for 8//2020 from the USGS gage at Burlington
Level: 94.72 ft. Temp: 73

60 Day Lake Level & Temperature Plots
Current Year Lake Level & Temperature Plots


USGS Gage at Rouse's Point, NY

(near real-time)

USGS Gage at Burlington, VT

(near real-time)

USGS Gage at Port Henry, NY

(near real-time)
USGS Gage at Whitehall, NY

(near real-time)


Alternate USGS Links

Historical Lake Champlain Yearly Graphs
Graphs updated daily
Lake LevelLake Temperature


The Science Behind the Creation of the Lake Champlain Forecast


The National Weather Service in Burlington produces the Lake Champlain recreational forecast from April through December, twice per day at approximately 4 am and 4 pm, with updates made when weather conditions become unrepresentative. Forecasts are valid for either 36 or 48 hours dependent on issuance time, and predict winds, significant wave heights, sensible weather, and associated restrictions to visibility if applicable over the open lake waters. Text, graphical and "point and click" forecasts are available to the user. In addition to these official forecasts, the NWS in Burlington produces a Lake Champlain model forecast which is run 4 times daily. These "model produced" forecasts are created automatically, with no human involvement and predict winds and wave heights only. They have been shown to predict these elements reasonably well under most conditions, and provide an extra source of information to those wanting access to more data. However, having no human involvement should throw caution to the wind and during most situations boaters should refer to the official NWS forecast for the most accurate and representative information. Click here for answers to some frequently asked questions (FAQs) regarding the Lake Champlain Recreational Forecast process.


Lake Champlain Ice Coverage


During the ice season, typically from December through April, images will be regularly posted on this page to give winter recreational enthusiasts using the lake a rough idea of ice coverage. The imagery is 10 meter resolution data from the European Space Agency Sentinel-2 polar orbiting satellite, which on clear or predominantly sunny days will show approximate ice coverage on the lake. The times of the images vary, but usually are within an hour or two of local noon when the satellite passes occur. Please note that ice may be clear or opaque in the pictures with a few apparently open water areas possibly having a thin, clear cover of ice. Thus this page is intended as a reference source only, and those planning winter activities on the lake should make use of additional resources to determine more precise ice coverage and thickness in their area of interest. 



Lake Champlain Nautical Charts



Other Champlain Information


WFO BTV Higher Summits Forecasts

Mountain Point Forecasts

*** Higher summits forecast is valid for 3000 to 5000 foot peaks *** 

During the traditional Mud Season (approximately mid-April to Memorial Day), the Vermont Department of Forests and Parks, and New York's Department of Environmental Conservation closes trails, or institutes a voluntary closure, asking hikers to refrain from traveling. This is done to protect sensitive alpine vegetation and trail erosion.

Mount Mansfield Current Conditions

11:05 PM EDT Thu Aug 06 2020
Temperature: 56F
Wind Direction: 267°
Wind Speed: 12 mph
Wind Gust: 13 mph

Click here for more data
Regional Mesonet Profile

Mount Mansfield Daily Summary

Mount Mansfield Snow Depth