High Temp: 68 F. -Evacuation ZipZone August saw the biggest increase with average rainfall increasing by about an inch. Preliminary maximum 24-hour Average Recurrence Interval (ARI) of the rainfall from August 24, 2017 through 12Z August 28, 2017. . And rainfall was substantially lower. Harris County sees four to five days of flooding every year. 2) In the first window, click Daily Summary Observations. It's Seattle's "little brother" down the road, and the weather there is very similar to ours. -Twitter . Houston winters are, on average, colder than South Florida and Southern California, on par with southern Louisiana and Central Florida, but slightly warmer than Dallas, Atlanta, San Antonio, Austin, and other inland southern cities. Temperatures are generally not hot yet, averaging from 7582F (23.927.8C) in the day and 5664F (13.317.8C) at night. -Storm Data Regrettably, weather records prior to 1889 are not available. More information & alert signup. -Worldwide New Orleans, on the other hand, where it usually rains over five feet a . For the purpose of storm drainage design, the following frequencies are applicable: 1. Tropical Storm Allison dumped up to 37 inches (940mm) of rain on parts of the city over a five-day period in 2001, and was the most destructive and costly natural disaster in Houston history[26] prior to Hurricane Harvey. 1 Map of Texas Counties By Mean Annual Precipitation Wind: 5 mph. Seattle gets about 37.4-38 inches of precipitation a year. Several major floods have happened in recent years. -National Former Vice President of Scientific Communications. -Weather Radio -Weather Prediction Center Berger, Eric; Latson, Jennifer; Leahy, Jennifer (December 10, 2008). -Houston Intercontinental After World War II, air conditioning stimulated the growth of Houston, and was called the most air-conditioned city in the world in 1950.[14]. You can jump to a separate table for each region of the state: North Central Texas , South Central Texas , East Texas , Gulf Coast and West Texas . There are usually a few days of freezing (32F (0C)) temperatures each year, though the average low in January, the coldest month, is still only 43F (6C) or 24F (4C). Texas was hit by a record-setting cold snap from the 14-17 February 2021 after three decades that resulted in power outages, disruption of the public water systems, and other cascading effects. -Preparedness Meetings -National Monthly: 1981-2010 normals History: 2007-2019 The city office was located in downtown Houston and observations began in July 1881. -Harris County Flood Warning System How many days does it rain in Houston? -Local Page. -Our Office -Lake Charles The 2004 Christmas Eve snowstorm brought a never-before-seen white Christmas to the region. -Forecast Discussion -Major Events, RADAR [13] Because of the high temperatures that persist in the months of April through October, most indoor workers in Houston spend the hottest part of the day in an air-conditioned environment. Yearly Average. -Weather Radio It's more than 4 feet of rain. -Activity Planner View over 750 USGS real-time stream, lake, reservoir, precipitation, and groundwater stations in context with current weather and hazard conditions on both desktop and mobile devices. National Oceanic and Atmospheric Administration -Web Weather for Kids Houston has occasional severe weather, mostly flooding. October, the same as September, is a moderately hot autumn month in Houston, Texas, with temperature in the range of an average low of 64.2F (17.9C) and an average high of 81F (27.2C). -CoCoRaHS Given Seattle's rainy reputation, it must be one of the wettest cities in America, right? -Center Weather Service Units -Frequent Products By this metric, Seattle and Buffalo are tied for #1, while Portland and Pittsburgh are tied for #2. -Public Information Statement In 2018, the average annual rainfall in the U.S. was 34.63 inches, 4.6 inches over the long-term average. In fact, Seattle doesn't even rank in the top 30 for precipitation among the nation's 50 largest cities. -Weather Safety 3", "Houston Snow - Weather Research Center, February 5, 1998", Snow in Houston: It Happens More Than You Think, Remember When: Houston's huge snow storm of 1960, One Hundred Years of Southeast Texas Weather (1900-2000), https://www.khou.com/article/news/local/snow-vember-the-earliest-houston-snowfall-ever-just-happened/285-, "Average Weather for Houston, TX - Temperature and Precipitation", "Houston paralyzed by ice storm - Disaster News Network", "Drivers urged to stay home during Houston's icy mess", "Cold and icy, Texas and Louisiana deal with winter - CNN.com", State of the Air 2005, National and Regional Analysis, "City Mayors: The most polluted US cities", "Comparative Assessment of Air PollutionRelated Health Risks in Houston", "The paradox of peak-based ozone air pollution standards", Comparison with month average and actual temps, https://en.wikipedia.org/w/index.php?title=Climate_of_Houston&oldid=1142219941, Source: NOAA (relative humidity and dew point 19691990, sun 19611990). However, it dropped to -6 C (21.2 F) in December 1996. [47], Houston is well known for its oil and petrochemical industries, which are leading contributors to the city's economy. Kentucky was the wettest state with 9.97 inches (253 mm) above normal which ranked as the 8th wettest in . The light rail system was designed to encourage Houstonians to utilize public transportation instead of their automobiles. 2016. -SKYWARN Schedule Houston, Texas, is considered to have a tropical climate, and its average annual rainfall reflects that. -Jefferson County Drainage District 6 -Major Events, RADAR -Spaceflight Meteorology Group -Education -Careers -NOAA Miami is another southern location that receives significantly more rain than Seattle, but in fewer days. [45] The ice storm that occurred on January 16, 2018 started as cold rain for several hours, before changing to a wintry mix and then eventually sleet and snow. Hurricane Harvey made landfall in Rockport, Texas, very early on August 26, 2017. -Corpus Christi The rainiest season is Autumn when it rains 28% of the time and the driest is Summer with only a 22% chance of a rainy day. Jay Lawrimore. Low Temp: 41 F. [42][43] The city's Office of Emergency Management encourages driver's to "avoid driving unless absolutely necessary if roadways are at risk of icing. Notice that most of the cities with more rainfall are located east of the Mississippi River, as shown in the map below made by climatologist Brian Brettschneider. Snowfall Months with snowfall are January and December. Houston sometimes experiences tropical cyclones during the Atlantic hurricane season, which can bring heavy rain and significant damage to the city. In Houston, the average yearly rainfall increased by about 2 inches. Supercell thunderstorms sometimes bring tornadoes to the area, most commonly during spring. -Local Page. Winter is also the driest part of the year for Houston. There are 90.0 rainy days annually in Houston, which is rainier than most places in Texas. Believe it or not, there are cities with even more rainy (or snowy) days: Buffalo, Portland, Cleveland, and Pittsburgh. 6422 Lozano Dr. Houston, TX 77041 (346) 226-3884. -Evacuation Planning Are "Low Dose" Health Effects of Chemicals Real? June through August in Houston is very hot and humid, often with scattered afternoon showers and thunderstorms. -Historical Tracks In 1837, the Racer's Storm passed just to the south of the town, raising water levels four feet. Information on Rainfall Frequency is published by the National Weather Service. They are most likely to be found along frontal boundaries of an air mass during the spring months. Since the 1930s, air-conditioning was built into all commercial buildings like theaters, malls, and corporations. Winters in Houston are relatively mild, dry, and temperate compared to most areas of the United States. -Aviation Weather Center But Houston doesn't get as cold as 20 F (-8 C). -SKYWARN Schedule In October, the average high-temperature slightly decreases from a tropical 88.3F (31.3C) in September to a warm 81F (27.2C). Averages are for San Antonio International Airport, which is 8 miles from San Antonio. In Austin, for example, 100-year rainfall amounts for 24 hours increased as much as three inches up to 13 inches. . Severe weather of Houston mostly takes the form of flooding, which occurs most commonly in the months of May to October, which is the city's monsoon season. On the first day of February, sunrise is at 7:11 am and sunset at 5:58 pm.