National Weather Service United States Department of Commerce
WFO BTV Lake Champlain Forecasts
			Recreational Forecast
National Weather Service Burlington VT
305 PM EDT Mon Aug 20 2018

.The Lake Champlain Forecast...

.TONIGHT...South winds 5 to 10 knots, becoming 5 to 15 knots after
midnight. Waves 1 foot or less, building to 1 to 2 feet after
midnight. 
.TUESDAY...South winds 10 to 15 knots, becoming 10 to 20 knots in
the afternoon. Waves 1 to 3 feet. A slight chance of showers in the
afternoon. Visibility generally unrestricted in the afternoon. 
.TUESDAY NIGHT...South winds 10 to 20 knots, increasing to 15 to
25 knots after midnight. Waves 2 to 4 feet, building to 4 to 6 feet
after midnight. Showers likely until midnight, then showers after
midnight. Visibility 3 to 5 miles. 
.WEDNESDAY...Southwest winds 15 to 25 knots, becoming west 10 to
15 knots in the afternoon. Waves 4 to 6 feet, subsiding to 1 to
2 feet in the afternoon. Showers likely in the morning, then a
chance of showers in the afternoon. Visibility 3 to 5 miles. 
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots, decreasing to
around 5 knots after midnight. Waves 1 to 2 feet. 
.THURSDAY...Northwest winds 5 to 10 knots. Waves 1 foot or less in the
afternoon. 
.THURSDAY NIGHT...Light and variable winds, becoming south 5 to
10 knots after midnight. Waves 1 foot or less. 
.FRIDAY...South winds 5 to 10 knots, becoming northwest in the
afternoon. Waves 1 foot or less in the
afternoon. 
.FRIDAY NIGHT...Light and variable winds. Waves nearly calm,
building to 1 foot or less after midnight. 
.SATURDAY...South winds 5 to 10 knots. Waves 1 foot or less in the
afternoon. 

The ultraviolet index for Tuesday will be a 7. This is in the high
category.

Latest Level and Temperature Data from Around Lake Champlain
                                Level           Temperature
USGS gage at Rouses Point NY    94.56 feet
USGS gage at Burlington VT      94.57 feet      75 degrees
King Street Ferry Dock          94.54 feet      74 degrees
USGS gage at Port Henry NY      94.61 feet
Colchester Reef                                 Missing
Diamond Island                                  73 degrees


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 7:00 PM EDT Mon Aug 20 2018
Location Tmp
(°F)
Wind
(kts)
Water Temp
(°F)
Waves
(ft)
Colchester Reef78SW5G7N/AN/A
Diamond Island78S7G973.5N/A
Burton Island80SW0G0N/AN/A
Inland Sea81W2G379.20.33
Valcour Island76S432.5N/A
Current Lake Champlain Readings
			Lake data for 8/20/2018 from King St. Ferry dock
Level: 94.54 ft. Temp: 74 F


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

 

As of mid December 2017 Lake Champlain is beginning to develop surface ice. From now until the end of the 2017-2018 ice season 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 MODIS 250 meter resolution data from NOAA's Terra and Aqua polar orbiting satellites on clear or predominantly sunny days and 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
			Recreational Forecast
National Weather Service Burlington VT
305 PM EDT Mon Aug 20 2018

.The Higher Summits Forecast for the Northern Adirondacks of New York...

.TONIGHT...Partly cloudy until midnight, then becoming cloudy. Lows
in the mid 50s. South winds 10 to 20 mph. 
.TUESDAY...Cloudy. A chance of showers in the afternoon. Highs in
the upper 60s. South winds 10 to 25 mph. 
.TUESDAY NIGHT...Summits obscured in clouds. Showers. Lows in the
upper 50s. South winds 35 to 50 mph. 
.WEDNESDAY...Summits obscured in clouds. Showers in the morning,
then a chance of showers in the afternoon. Highs in the upper 60s.
Southwest winds 30 to 45 mph, becoming west 20 to 30 mph in the
afternoon. 

.The Higher Summits Forecast for the Green Mountains of Vermont...

.TONIGHT...Partly cloudy. Lows in the upper 50s. South winds 5 to
15 mph. 
.TUESDAY...Mostly cloudy. Highs in the upper 60s. South winds 5 to
20 mph. 
.TUESDAY NIGHT...Cloudy until midnight, then becoming
obscured in clouds. A chance of showers until midnight, then showers
after midnight. Lows around 60. South winds 20 to 35 mph, increasing
to 30 to 45 mph after midnight. 
.WEDNESDAY...Summits obscured in clouds. Showers and a chance of
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s. Southwest
winds 30 to 45 mph, becoming west 20 to 30 mph in the afternoon. 


Mountain Point Forecasts

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

***PLEASE NOTE***
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

7:05 PM EDT Mon Aug 20 2018
Temperature: 61F
Wind Direction: 152°
Wind Speed: 6 mph
Wind Gust: 8 mph


Click here for more data
Regional Mesonet Profile


Mount Mansfield Daily Summary
			Daily Hydrometeorological Data
National Weather Service Burlington VT
551 PM EDT Mon Aug 20 2018

Station            Precip   Temperature   Present         Snow
                   24 Hrs   Max Min Cur   Weather     New Total SWE

Mount Mansfield     0.00    71  52  68                      0    


(Observations taken daily around 4pm at the WCAX transmitter atop Mount Mansfield.)