Maine Apple IPM Prgram

Maine Freeze-Frost Dates Table - Shows dates by which there is 10%, 50% and 90% chance of last spring occurrence, or first fall occurrence, of temperature of 36, 32, or 28 degrees F at 2 meters above ground.
(From Climatography of the U.S. No. 20, Supplement No. 1,  Nat. Climate Data Ctr., January 1988.  There can be widespread ground frost when 2 meter temperature is 36F.   Table shows dates for 18 Maine locations.  These dates give general guidance, but site-specific air drainage has strong influence on actual freeze-frost dates for a particular spot.  Thus, the probability of freeze-frost dates at your garden may vary from table values.)

     Spring 28F freeze date probabilities for Augusta - Lewiston area
     Spring 32F freeze date probabilities for Augusta - Lewiston area

     Fall 28F freeze date probabilities for Augusta - Lewiston area
     Fall 32F freeze date probabilities for Augusta - Lewiston area

Maine Plant Hardiness Zone Map and Tables
 

Highmoor Farm Climatic averages - Highmoor is the University of Maine Agricultural Experiment Station farm for research and Extension on tree fruits, vegetables, strawberries and other crops.  It is located between Augusta and Lewiston.
    Average temperature chart     
       Average heating degree days chart

    Sunrise/morning Twilight time
       Sunset/evening Twilight time
          Sunrise & Sunset Charts together on one page
                 Day length chart

Other links of interest
Nat. Climate Date center - customized graphs.  -- Customize a graph of past weather data from just about anywhere, anytime.

Northeast Climate Impacts Assessment - 2007 report

Indicators of Climate Change in the Northeast 2005

Fall foliage
  Peak fall foliage average dates by Weather Channel
     Fall foliage updates by Maine Dept. of Conservation