The clearest month of the year in San Antonio is June, during which on average the sky is clear, mostly clear, or partly cloudy 71% of the time. Summer is the peak season for in-state and out-of-state tourism. Everything else here is based on 1991 to 2020 weather. The shaded overlays indicate night and civil twilight. With highs expected to reach the upper 70s on Martin Luther King Jr. Day and the low to mid-80s the following day, weather in the greater San Antonio Area continues its trend of above normal temperatures. National Weather Service Austin/San Antonio TX. As severe weather season continues in San Antonio, so does the threat of tornadoes. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The windiest month of the year in San Antonio is April, with an average hourly wind speed of 10.3 miles per hour. For example: The length of the day in San Antonio varies significantly over the course of the year. The risk of grass pollen symptoms is low. Check them out here: Build, organize, and map your itinerary to. Scan the QR code or enter your mobile number. Aviation Weather The highest daily average low temperature is 76F on August 11. Some would describe it as pleasantly warm and breezy. Check in advance of your trip if this would affect your plans. The estimated value at San Antonio is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Antonio and a given station. Rivers/Lakes The month with the most cloud cover is March (Cloud cover 47). Environmental Modeling, Weather Education Some would describe it as moderately chilly with a gentle breeze. Elizabeth is originally from Fairfield, CT. Once again, South San ISD is thinking about closing schools. Manage Settings The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . Conditions for stargazing are ideal. Olmos Park and Alamo Heights were second and third, respectively, in the online research organizations list of the 2020 Best Suburbs to Raise a Family. The risk of tree pollen symptoms is moderate. Sun & Moon. Our tourism temperature score is 0 for perceived temperatures below 50F, rising linearly to 9 for 65F, to 10 for 75F, falling linearly to 9 for 80F, and to 1 for 90F or hotter. If inexpensive real estate and increasing your original home investment are your top priorities, San Antonio is a superior purchase. In general San Antonio has very hot, long, and humid summers and mild to cool winters. You might wish to pack a coat just in case temperatures are cooler than normal. Get the monthly weather forecast for San Antonio, TX, including daily high/low, historical averages, to help you plan ahead. The first set of high and low temperatures are averages for 2010 to 2019. The thin dotted lines are the corresponding average perceived temperatures. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. This report illustrates the typical weather in San Antonio, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. You can expect very pleasant temperatures during the day. This graph shows how an average day looks like in San Antonio in December based on historical data. Conditions for a day at the beach or pool are good. Get inspired for your trip to San Antonio with our curated itineraries that are jam-packed with popular attractions everyday! Well text you a link to download the app. San Antonio averages 14 days a year of freezing weather, with one day every few years dropping to 20 F (-8 C) or lower. Have a safe trip. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. low temp. See more current weather. Questions? Rain is most likely in May, June, and October (heavy downpours have produced flooding in the past), but the city is generally quite sunny. Eliminate standing water in rain gutters, buckets, and in tires where pests can breed. Remain prepared for changing weather by tracking ongoing forecasts. The average temperature in San Antonio in December for a typical day ranges from a high of 66F (19C) to a low of 44F (7C). Eagle Pass is the nearest border crossing to San Antonio, located 144 miles away. The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days). Recent Storm Reports, National Centers The greatest time to visit San Antonio is between November and April, when the weather is pleasant and hotel prices are at their lowest. Fire Weather LIVE: Snow spreads across north-central US as severe storms jolt South, Snow totals rapidly increasing in Nebraska, Winter storm to clobber Colorado to Michigan with snow, January tornadoes are uncommon but not unheard of, Remains of last missing person from Hurricane Ian found in sunken boat, Snow, ice and thunderstorms to return to interior Northeast, Jeremy Renner says he's home from the hospital after snowplow accident, 1st sunrise of 2023 is days away in Americas northernmost town, 133-day timelapse gives one of richest glimpses into suns activity. All NOAA, Forecasts See more current weather Annual Weather Averages Near San Antonio Averages are for San Antonio International Airport, which is 8 miles from San Antonio. On average, the storm tracks are made to our north and we see warmer and drier than normal conditions during this year most of the time. high temp. The city averages 4 days this month when the thermometer reaches into the 80s F (over 27 C). The black isolines are contours of constant solar elevation. Try searching for a city, zip code or point of interest. During the warmest days, the mercury can rise considerably, and temperatures above 40 degrees Celsius (104 F) is no exception. In this report, we use a base of 50F and a cap of 86F. Climate Prediction The average hourly wind speed in San Antonio experiences mild seasonal variation over the course of the year. The aquifer and reservoir levels are still well below normal for this time of year and there's no signs at least in the immediate future of any significant relief, said White. The average day in San Antonio during December has 10.3 hours of daylight, with sunrise at 7:19 AM and sunset at 5:37 PM. For comparison, the hottest month in San Antonio, August, has days with highs of 100F (38C) and lows of 76F (24C). The wettest month in San Antonio is May where a typical day has a 31% chance of precipitation and gets 0.09 inches (2.2 mm) of precipitation, while the dryest month in San Antonio is August where a typical day has a 9% chance of precipitation and gets 0.11 inches (2.7 mm) of precipitation. The amount of rain in November is normal with an average of 60mm (2.4in). Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. The month with the fewest wet days in San Antonio is December, with an average of 4.3 days with at least 0.04 inches of precipitation. Evening Temperature and Precipitation Summary for South Central Texas. The temperature is an enjoyable 66.2F (19C). Rain falls throughout the year in San Antonio. The windiest month (with the highest average wind speed) is May (9mph). The transitions to and from daylight saving time are indicated by the 'DST' labels. San Antonio Temperature Averages by Decade, Precipitation Averages for Places in Texas. Major winter storm to spread snow across a 1,700-mile-long swath of the U.S. Get the details. The risk of weather-related sinus pressure is moderate. The month with the most days of rain alone in San Antonio is May, with an average of 9.2 days. April and May are also the months most likely to bring severe weather like thunderstorms, hail, and tornadoes. The risk of mold allergy symptoms is moderate. San Antonio weather to remain hotter, drier than normal. We've collected the weather data for San Antonio during all other months of the year too: Weather data for San Antonio was collected from the MERRA-2 project from NASA, which used a climate model combined with historical data from weather stations around the world to estimate what the conditions were like for every point on the Earth. Climate Graphs In San Antonio, the average high-temperature in February is practically the same as in January - a still enjoyable 65.8F (18.8C). Sun & Moon. Over the course of the year, the temperature typically varies from 43F to 96F and is rarely below 31F or above 101F. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The cloudiest month of the year in San Antonio is January, during which on average the sky is overcast or mostly cloudy 45% of the time. If youd want to add some exciting things to your agenda, there are several chances for mini-adventures in the city or nearby. The average temperature is of 17.1 C (63 F), with a minimum of 11 C (51.8 F) and a maximum of 23.2 C (73.8 F). 0.52 inch: 1.97 inch: Total snowfall Total snowfall : 0.00 inch: 0 inch: Highest max temperature Highest max temp. The figure below shows you a compact characterization of the entire year of hourly average temperatures. Global Summary of the Month and Year, Version 1.0. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. San Antonio experiences extreme seasonal variation in the perceived humidity. Cooperative Observers We have updated our Privacy Policy and Cookie Policy. The month with the highest number of rainy days is September (17 days). The calmer time of year lasts for 6.1 months, from July 16 to January 19. Heat Safety in October, the average heat index (a.k.a. Daily low temperatures are around 74F, rarely falling below 66F or exceeding 78F. (Weather station: San Antonio International Airport, USA). Daylight saving time (DST) is observed in San Antonio during 2023, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5. Temperature With an average high-temperature of 61.7F (16.5C) and an average low-temperature of 44.2F (6.8C), January is the coldest month. A light jacket should suffice, as well as rain gear. 53.1 F -Highest min temperature Highest min temp. Get the monthly weather forecast for San Antonio, TX, including daily high/low, historical averages, to help you plan ahead. San Antonio is one of the most flood-prone areas of North America, according to the San Antonio River Authority and is part of an area that is termed flash flood alley. Exercise caution when visiting during the rainy spring monthsand never attempt to drive through low water crossings by heeding the National Weather Services caution: Turn around, dont drown.. Be sure you have the correct gear to keep your core temperature warm during winter months and cool during hot weather. The black line is the percentage chance that a given day is within the growing season. This is one of the Gulf Coast beaches in San Antonio that is ideal for surfing, jet skiing, and paddle boarding. The chilly season spans 2,8 months, from November 27 to February 20, with average daily high temperatures below 70 degrees Fahrenheit. Humidity In San Antonio, the average relative humidity in January is 64%. As such, it tends to be another ideal time to visit the city. 625 PM CST Sat Jan 14 2023. Aviation Monthly Weather - San Antonio, TX As of 1:15 am CST Sun mon tue wed thu fri sat 1 78 48 2 79 65 3 84 62 4 79 51 5 78 43 6 76 48 7 81 61 8 74 53 9 72 48 10 74 54 11 81 56. NOAA National Centers for Environmental Information. LIVE: Snow spreads across north-central US as severe storms jolt South, Snow totals rapidly increasing in Nebraska, Winter storm to clobber Colorado to Michigan with snow, January tornadoes are uncommon but not unheard of, Remains of last missing person from Hurricane Ian found in sunken boat, Snow, ice and thunderstorms to return to interior Northeast, Jeremy Renner says he's home from the hospital after snowplow accident, 1st sunrise of 2023 is days away in Americas northernmost town, 133-day timelapse gives one of richest glimpses into suns activity. Conditions for flying are ideal. The month with the most muggy days in San Antonio is July, with 27.1 days that are muggy or worse. The average daily maximum temperature is around 67 degrees Fahrenheit, seldom dipping below 48 degrees or surpassing 83 degrees Fahrenheit. In recent years, though, Alamo City has reported minor dustings of snow often little more than one inch. Ocean Prediction While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. The average minimum temperature (usually the minimum temperature is noted during the night) in San Antonio in November is 10.2C (50.36F). The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. Yes, San Antonio is generally a safe place to visit. There are plenty of air-conditioned museums and other attractions, plus waterparks in the area where you can keep cool. San Antonio weather by month. The months with the highest UV index are June, July and August (UV index 7). In San Antonio, currently, the weather is sunny, and the sky is cloudless. Closing your windows on windy days can help prevent outside dust or dander from getting into your home. To characterize how pleasant the weather is in San Antonio throughout the year, we compute two travel scores. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. 000. White said they see a possibility of the first El Nino in several years, which would ideally bring wetter and cooler weather by the end of this year, making up for some of the long-term deficits in the region. Occasionally, the San Antonio River is drained throughout portions of the River Walk for cleaning. The percentage of time spent at various humidity comfort levels, categorized by dew point. How Often San Antonio Has Cold Temperatures The month with the lowest UV index is December (UV index 3). Continue with Recommended Cookies. He said theyll be crossing their fingers for more precipitation in the historically wetter time of the year, March and April, to make up for the long-term deficits.. Based on weather reports collected during 1985-2015. For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Visitors The darker period of the year lasts for 2.7 months, from November 12 to February 3, with an average daily incident shortwave energy per square meter below 3.9 kWh. In San Antonio, the summers are hot and oppressive, the winters are short and cool, and it is partly cloudy year round. National Weather Service According to the National Oceanic and Atmospheric Administration, San Antonio has not had substantial snowfall since 1985. For all data based on historical data, we've averaged the data from the past 11 years (2010-2020). Over the course of February in San Antonio, the length of the day is increasing.From the start to the end of the month, the length of the day increases by 43 minutes, implying an average daily increase of 1 minute, 36 seconds, and weekly increase of 11 minutes, 13 seconds.. Weather data is prone to errors, outages, and other defects. The average high and low temperatures are listed below by month and annually for San Antonio, in both degrees Fahrenheit and Celsius. The coldest month of the year in San Antonio is January, with an average low of 43F and high of 64F. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Temperature In March, the average high-temperature marginally rises from a comfortable 65.8F (18.8C) in February to a pleasant 72.7F (22.6C). 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