National Weather Service United States Department of Commerce

Hazardous Heat in the Western U.S.; Heavy Rain and Flooding Potential in the Southern Rockies

Widespread high temperatures in the 90s with heat indices exceeding 100 degrees will persist across the western U.S. this weekend into next week. Some daily high temperature records are forecast to be tied or broken. Monsoon conditions continue to linger across the Southern Rockies posing a heavy rainfall threat which may lead to additional flash flooding concerns. Read More >

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 4:00 AM EDT Sat Jul 20 2024
Location Tmp
Water Temp
Colchester Reef69SW4G5N/AN/A
Diamond Island64SW4G572.4N/A
Burton Island69SW7G9N/AN/A
Note: Marine observations listed above are largely 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. The Schuyler Reef buoy is operated by the Great Lakes Environmental Research Laboratory and is experimental.
Lastest data from the USGS gage at Burlington
as of 07/19/2024 3 PM

Level: 97.04 feet    Temp: 75 degrees
Lake Level & Temperature Plots
Historical Lake Champlain Yearly Graphs
Graphs updated daily
Lake Level Lake Temperature
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

Lake Champlain Modeled Forecasts
GLERL Lake Champlain Nowcast / Forecast System

Experimental. Data and products may not always be available and/or accurate.
Hydrologic Ensemble Forecasting System Lake Level
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
6:05 PM EST Sat Jan 13 2024
Temperature: -9999F
Wind Direction: -9999°
Wind Speed: 0 mph
Wind Gust: 0 mph

Click here for more data
Regional Mesonet Profile
Mount Mansfield Daily Summary
Mount Mansfield Snow Depth

Note: Averages displayed above are for the entire historical period dating back to 1954.