Well... If the forecast holds it might drop below 30F.. That is a point where stuff starts getting damaged. If I can set up a heater and just give it a degree or two, it would stay green

at least in theory? lol
And i am protecting two giant bunches of fruit that opened this month.
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Average January Low: 40°F, Average August High: 95°F
Typical Low Each Winter: 28-30°F, Typical High Each Summer: 108-110°F, Annual Precipitation: 22 inches