Climate Summary for Saint Johnsbury, VT

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Summary
(monthly means)
Normals and Extremes
(daily means)
Trends
(yearly means)

  Please note:
  • Charts on the Normals and Trends pages are created with Google Chart Tools.
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Mean Values for each Year
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The Tmean chart (immediately above) shows the average mean temperature for each calendar year.

Values often change a lot from one year to the next. In order to see the trend, a 7 year running average is shown (thick red curve). For each year (except the first and last 3) the 3 previous years, the year, and the next 3 years are averaged.

Mean Temperature (Tmean) is the average of the high and low temperatures each day. Values are typically averaged for each month, and the 12 monthly values are averaged to obtain the yearly mean.


The Tmean table (immediately above) shows the 10 highest and 10 lowest mean temperture values in Fahrenheit, and the year that they occured.


The Tmax chart (immediately above) shows the average maximum temperature for each calendar year.

The High Temperature (or maximum temperature, Tmax) is the warmest temperature reached each day.


The Tmax table (immediately above) shows the 10 highest and 10 lowest maximum temperture values in Fahrenheit, and the year that they occured.


The Tmin chart (immediately above) shows the average minimum temperature for each calendar year.

The Low Temperature (or minimum temperature, Tmin) is the coolest temperature reached each day.


The Tmin table (immediately above) shows the 10 highest and 10 lowest minimum temperture values in Fahrenheit, and the year that they occured.


The Temperature Range chart (immediately above) shows the average temperature range for each calendar year.

The Temperature Range is the difference between the high and low temperatures reached each day.


The Temperature Range table (immediately above) shows the 10 highest and 10 lowest temperture range values in Fahrenheit, and the year that they occured.


The Precipitation chart (immediately above) shows the total precipitation for each calendar year.

Precipitation (Prcp) is the total amount of rain and melted snow or ice measured each day.


The Precipitation table (immediately above) shows the 10 highest and 10 lowest precipitation values in inches, and the year that they occured.


The Snow chart (immediately above) shows the total snowfall for each meteorological year (July through June).

Snowfall (Snow) is the total amount of snow that falls each year. Values are summed from July through June, the snow 'season'. The year of the first half of the snow season determines the year of the snow amount.


The Snow table (immediately above) shows the 10 highest and 10 lowest snow amounts in inches, and the year that they occured.


The Heating Degree Days chart (immediately above) shows the total heating degree days for each meteorological year (July through June).

Heating degree days (Hdd) are the total number of heating degree days each meteorological year. Values are summed from July through June, the heating 'season'.


The Heating Degree Days table (immediately above) shows the 10 highest and 10 lowest heating degree days amounts in Fahrenheit, and the year that they occured.


The Cooling Degree Days chart (immediately above) shows the total cooling degree days for each calendar year.

Cooling degree days (Cdd) are the total number of cooling degree days each year. Values are summed from January through December, the cooling 'season'.


The Cooling Degree Days table (immediately above) shows the 10 highest and 10 lowest cooling degree days amounts in Fahrenheit, and the year that they occured.