3C/37F? Nope. The ground will be too warm.
Right now, it's 29F (-1.7C) right here in AZ at 7:30 am. No ice because it's too dry even though it rained for much of yesterday. Beautiful though. All blue skies and not a puff of cloud. It's cold enough though to trip some car alarms. I hear one right now.
Clear skies tend to bring cooler temps because the land heat would radiate out into space and the atmosphere overnight. Low clouds would act like insulation and keep heat in.






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