National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Advisories in Effect for Today and Friday

Significant heat is expected to build today and Friday. Hot temperatures and high humidity will allow heat index values to reach into the lower to mid 90s this afternoon and again Friday afternoon in the Champlain Valley and Connecticut River Valley. Heat index values elsewhere will be in the upper 80s to low 90s. Read More >

Hazardous Weather Conditions

Current conditions at

Morrisville-Stowe State Airport (KMVL)

Lat: 44.54°NLon: 72.62°WElev: 709ft.

Fog

66°F

19°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.70 in (1005.4 mb)
Dewpoint 66°F (19°C)
Visibility 0.25 mi
Last update 12 Jun 5:54 am EDT
Extended Forecast for

Johnson VT

  • Today

    Today: A slight chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 5pm. Patchy dense fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny and hot, with a high near 91. Heat index values as high as 96. Light west wind. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    T-storms and
    Patchy Dense
    Fog

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 57. West wind 3 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    T-storms
    Likely then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. West wind 6 to 8 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 58. Calm wind.

    Low: 58 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers likely after 2pm. Partly sunny, with a high near 85. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 85 °F

    Partly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 54. South wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 71. West wind around 7 mph.

    High: 71 °F

    Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 72. Calm wind becoming southwest around 5 mph.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 5pm. Patchy dense fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny and hot, with a high near 91. Heat index values as high as 96. Light west wind. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 57. West wind 3 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 81. West wind 6 to 8 mph.
Saturday Night
Increasing clouds, with a low around 58. Calm wind.
Sunday
Showers likely after 2pm. Partly sunny, with a high near 85. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 54. South wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 71. West wind around 7 mph.
Monday Night
Partly cloudy, with a low around 49. Calm wind.
Tuesday
Mostly sunny, with a high near 72. Calm wind becoming southwest around 5 mph.
Tuesday Night
Partly cloudy, with a low around 51. Calm wind.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 76. Light southwest wind.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 54. Calm wind.
Thursday
Showers likely. Partly sunny, with a high near 76. South wind 3 to 7 mph. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johnson VT
 44.64°N 72.67°W (Elev. 771 ft)
Last Update:
2:11 am EDT Jun 12, 2026
Forecast Valid:
6am EDT Jun 12, 2026-6pm EDT Jun 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation