| Richard, I've been out of computer range for awhile. Sorry to delay this response. I'll try to respond to the issues you raise. You said
I'm not surprised. I don't like the USDA zone concept at all, and it is close to useless for serious tree work in a borderland semitropical area like the Upper Texas Gulf Coast where we are growing guavas, mangoes apples, papayas and pears, and where temperatures change not only with degree of urbanization and distance from the coast (not even considering long run changes). The data I published at
I would suggest that anyone who is wondering what the weather situation is like in their area during recent decades (whatever the cause), go to the NOAA website http://forecast.weather.gov/zipcity.php and put in your zip code, then use that link to track down archival data from your area airports on weather from the last decade or two. This is tedious work (winter low temperatures are reported by calendar year--not winter (which straddles two calendar years). At least it will tell you what has really been happening in your area at airports. If you think your data is much different from the airports' data, compare what your readings are with theirs on a series of cold and warm nights and adjust their data to your personal case You may be able alternatively to get data easier from http://www.wolframalpha.com I tried entering temperature february 1980 Galveston TX and instantly got a result for the average, minimum, and maximum However, if you pick a place without data for that year, you get the nearest national weather service station where data is--and it could be at considerable distance from what you entered. Bob "Share What You Grow and What You Know!" Bob Randall, Ph.D. 713-661-9737 On Aug 3, 2009, at 3:26 PM, Richard Harrison wrote:
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