The Baicatcan Community Garden weather can roughly be estimated by this link:

http://forecast.weather.gov/MapClick.php?lon=-110.37919&lat=32.29793#.U2GgK6L6a94

…just subtract 5 degrees from the low and that should be close to the weather in the garden’s micro-climate (per observations by Dave and Pearl).  Our garden may “collect” cool air by virtue of the berm around it.

 

Frost

Remember that frost can occur under open skies even at air temperatures as warm as 40 degrees…it’s the temperature on the plant itself that counts.  Here is a quote from a television meteorologist:

What is important is not what the temperature was at the thermometer but what the temperature was where the frost formed, and if frost formed the local temperature was below freezing.

So if we had frost at 40 degrees, the local temperature on the plant leaf must have been colder than the air.

http://www.gardening.cornell.edu/weather/frost.pdf

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