![]() Based on records from 1898 to 2019, the average snowfall is 2.6 inches per year. There are two to three days with hail per year, but snowfall is rare. There is more info on Phabricator and on MediaWiki wiki. Graphs are unavailable due to technical issues. Source 2: Weather Atlas (Average UV index) Source 1: NOAA (sun, relative humidity, and dew point 1961–1990 at DFW Airport) The all-time recorded low is −3 ☏ (−19 ☌) on January 18, 1930.Ĭlimate data for Dallas ( Love Field), 1991–2020 normals, extremes 1913–present Based on 1991-2020 climate data, the average coldest temperature for an entire year is about 19.1 ☏ (−7.2 ☌), placing Dallas in USDA zone 8b. On average, even the coldest month of January is generally mild, with an average high of 57.7 ☏ (14.3 ☌) and low of 37.9 ☏ (3.3 ☌). A couple of times each year, warm and humid air from the south overrides cold, dry air, leading to freezing rain, which often causes major disruptions in the city if the roads and highways become slick. range, rarely lower than that, for several days. During cold spells, high temperatures can lower to the 30s F., with low temperatures in the 10-20 F. On the other hand, a Blue Norther can occur, bringing sudden and possibly-large temperature drops. When these fronts meet over north central Texas, severe thunderstorms are generated with spectacular lightning shows, torrents of rain, hail, and occasionally, tornadoes (Dallas is located at the lower-end of the Tornado Alley).ĭuring the winter months of December to March, daytime highs as high as 76.7–85.9 ☏ (24.8–29.9 ☌) are not unusual during warm spells. In the spring, cool fronts moving south from Canada collide with warm, humid air streaming in from the Gulf Coast. The spring and fall seasons are pleasant in Dallas, as seen in this March photograph from an Oak Cliff park The weather in Dallas is also generally pleasant between late October and early December, and unlike springtime, major storms rarely form in the area. Springtime weather can be quite volatile, but temperatures themselves are warm on average. Vibrant wildflowers (such as the bluebonnet, Indian paintbrush and other flora) bloom in spring and are planted around the highways throughout Texas. Spring and autumn bring warm weather to the area. Especially hot and dry summers occurred in 1980, 2011, 20. Days with temperatures exceeding 100 ☏ (38 ☌) happen at least several times during the summer every year. In July and August, the average high temperature is near 96 ☏ (36 ☌), while the average nighttime low temperature is around 77 ☏ (25 ☌). The city's all-time recorded high temperature is 113 ☏ (45 ☌) during the Heat Wave of 1980. During the summer, the greater Dallas area receives warm to hot, dry airflow from Southwestern desert areas to the west and southwest, as well as hot, humid air from the Gulf of Mexico. ![]() Heat waves can be severe and prolonged, usually coinciding with severe drought. ![]() Wetter (generally less hot) periods occur in a minority of years. ![]() Summers are very hot and variably humid, with extended periods of hot, dry weather common in many summers. Dallas experiences mild winters and hot summers. It has a humid subtropical climate ( Köppen climate classification: Cfa) that is characteristic of the southern plains of the United States. temperatures in ☌ĭallas is located in North Texas, built along the Trinity River.
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