• Station: Search for a single station.
    You can enter a station name or ID.
    Use the Station Finder to find a station name or ID.
• Gridpoint: Search for a single grid point.
    Enter a Lon,Lat coordinate or
    Use the map interface by dragging the marker to find your location.

See more on gridded datasets

Note: degree day calculations are preformed
with base temperatures in Fahrenheit.


• English:
    Temperatures in Fahrenheit
    Precipitation/Snow/Pan Evaporation in Inches
    Wind Movements in Miles
  
• Metric:
  Note: native database units are English.
  If you choose metric, be aware that data values loose precision
  since they are converted from English units and will be rounded.
    Temperatures in Celsius
    Precipitation/Snow/Pan Evaporation in Millimiter
    Degree Days: °C HDD = (5/9) x (°F HDD)
    Wind Movements in Kilometers

• Heating Degree Days base temperature - (max temperature - min temperature)/2
• Cooling Degree Days (max temperature - min temperature)/2 - base temperature
• Growing degree Days (max temperature - min temperature)/2 - base temperature

• Monthly
  Statistic is applied to each month
  of each year spanning start and end year.
• Weekly
  Statistic is applied to each week
  of each year spanning start and end year.

• Maximum
  Finds maximum
  for each period in each year spanning start to end year.
• Minimum
  Finds minimum
  for each period in each year spanning start to end year.
• Average
  Computes average over non-missing days
  for each period in each year spanning start to end year.
• Standard Deviation
  Computes standard deviation
  for each period in each year spanning start to end year.
  Uses N-1 degrees of freedom.
• Number of Days
  Computes number of days that meet user selected threshold criteria
  for each period in each year spanning start to end year.
• Range
  Computes the difference (highest minus lowest daily value)
  for each period in each year spanning start to end year.
• Sum
  Computes sum
  for each period in each year spanning start to end year.

• Less greater or between:
  Count the number of days less than/greater than or between threshold(s).
• Threshold:
  If you choose less than or greater than above, enter your threshold here.
• Above/Below:
  If you choose between above, enter your lower(Above) and upper(Below) thresholds here.