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February marks the midpoint of winter, and with spring just over the horizon, many gardeners are dreaming of sunny days and dirty fingernails. A week before the last frost date, begin to “harden ...
Last frost dates are estimated based on historical data of when the last freeze – when temperatures drop between 29° to 32°F, cool enough to kill tender plants – is likely to occur ...
First frost dates are based on historical averages, but of course, weather is unpredictable. It's estimated that a frost may occur earlier than the given date 30% of the time.
The average last frost date in spring is May 1, and the average first frost in fall is October 11, giving the area a growing season of 162 days. [40] The city is in plant hardiness zone 6a, while outlying areas are 5b. Some far western suburbs closer to the insulating effect of Lake Michigan are in zone 6b. [41]
1813–1814: Severe cold, last freeze-over of Thames, and last frost fair. (Removal of old London Bridge and changes to river's banks made freeze-overs less likely.) 1883–1888: Colder temperatures worldwide, including an unbroken string of abnormally cold and brutal winters in the Upper Midwest, related to the explosion of Krakatoa in August ...
6b/7a [16] Brownsville, Texas ... since factors such as frost dates and frequency of snow cover can vary widely between regions. ... This page was last edited on 31 ...
Though he says the average last frost date for the Triangle is April 3, he also looked up the date of the latest last freeze on record: May 10, 1977, when the temperature fell to 32 degrees at RDU ...
Map of average growing season length from "Geography of Ohio," 1923. A season is a division of the year marked by changes in weather, ecology, and the amount of daylight. The growing season is that portion of the year in which local conditions (i.e. rainfall, temperature, daylight) permit normal plant growth.