The average contiguous U.S. temperature during February was 30.6°F, 3.2°F below the 20th century average. Definitions Many locations also broke the record for the earliest-in-season 38 °C (100 °F) temperature. The warmest zone in the 48 contiguous states is the Florida Keys (11b) and the coldest is in north-central Minnesota (3a). The mean temperature was below average. The number of cold nights was above average. 1991-2020 Twin Cities Normals This ranked as the 19 th coldest February in the 127-year period of record. Their thermometer data disagrees. The average minimum temperature was was below average. Check the flats every day to make sure the heat is held at a steady temperature and the soil has consistent adequate moisture. Zone 1 is the coldest, with an average minimum winter temperature of -60 to -50 degrees F, while the minimum winter average temperature in Zone 13 is 60 to 70 degrees F. What Planting Zone Am I In? On 25 January the temperature of The Treasure Coast reached 45.0 °C (113 °F). This page offers a running account of significant Minnesota weather events or sustained weather features. See our legacy climate journal Older journal articles will appear as we continue to back-fill this page.. May 2021. Three years ago was the coldest on record. ; The main driver for the weather across the contiguous U.S. during February was a strongly negative Arctic Oscillation (AO) during the first half of the month. In late-May 2019, an unusually strong early-season heat wave affected the southeastern United States, breaking all-time May record high temperatures in several cities. Conversely, Fort Yukon, Alaska has the coldest hardiness zone for any city in the United States at 1a. Hawaii has the warmest hardiness zone in the United States at 12b. The number of warm days was below average. Understanding gardening zones means you can focus your time and attention (not to mention money) on plants with the best chance of winter survival. Plug in the heat mat and set the thermostat to the desired temperature range. Stay current with the latest weather news and other weather-related stories from around the globe. April temperatures in the US have been plummeting for the past 20 years. Place the seed flat on top of the mat, evenly distributing the heat source across the bottom of the flat.
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