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Winter Weather in Richardson Texas, United States

Daily high temperatures are around 60°F, rarely falling below 38°F or exceeding 78°F. The lowest daily average high temperature is 55°F on January 3.

Daily low temperatures are around 41°F, rarely falling below 25°F or exceeding 59°F. The lowest daily average low temperature is 37°F on January 4.

For reference, on July 27, the hottest day of the year, temperatures in Richardson typically range from 77°F to 96°F, while on January 4, the coldest day of the year, they range from 37°F to 55°F.

Average High and Low Temperature in the Winter in Richardson

Average High and Low Temperature in the Winter in RichardsonDecJanFeb25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FFallSpringJan 355°FJan 355°F38°F38°FDec 161°FDec 161°F43°F43°FFeb 2865°FFeb 2865°F45°F45°FFeb 158°FFeb 158°F39°F39°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average winter temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in the Winter in Richardson

Average Hourly Temperature in the Winter in RichardsonDecJanFeb12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMFallSpringvery coldcoldcoolcoolcoolcoolvery coldcomfortablecomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Kastal, Turkey (6,781 miles away) is the far-away foreign place with temperatures most similar to Richardson (view comparison).

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The winter in Richardson experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 40% to 46%. The highest chance of overcast or mostly cloudy conditions is 46% on February 24.

The clearest day of the winter is December 3, with clear, mostly clear, or partly cloudy conditions 60% of the time.

For reference, on February 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on October 4, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.

Cloud Cover Categories in the Winter in Richardson

Cloud Cover Categories in the Winter in RichardsonDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpringOct 474%Oct 474%Dec 160%Dec 160%Feb 2855%Feb 2855%Jan 156%Jan 156%Feb 156%Feb 156%clearmostly clearpartly cloudyovercastmostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Richardson, the chance of a wet day over the course of the winter is essentially constant, remaining around 19% throughout.

For reference, the year's highest daily chance of a wet day is 37% on May 31, and its lowest chance is 16% on December 31.

Over the course of the winter in Richardson, the chance of a day with only rain remains an essentially constant 17% throughout, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout.

Probability of Precipitation in the Winter in Richardson

Probability of Precipitation in the Winter in RichardsonDecJanFeb0%0%5%5%10%10%15%15%20%20%25%25%FallSpringDec 3116%Dec 3116%Dec 121%Dec 121%Feb 2822%Feb 2822%Feb 119%Feb 119%rainmixedsnow
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Richardson is essentially constant, remaining about 2.3 inches throughout, and rarely exceeding 4.9 inches or falling below 0.2 inches.

The lowest average 31-day accumulation is 2.0 inches on January 15.

Average Monthly Rainfall in the Winter in Richardson

Average Monthly Rainfall in the Winter in RichardsonDecJanFeb0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 in8 in8 inFallSpringJan 142.0 inJan 142.0 inDec 12.7 inDec 12.7 inFeb 282.7 inFeb 282.7 inJan 12.1 inJan 12.1 inFeb 12.2 inFeb 12.2 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of the winter in Richardson, the length of the day is rapidly increasing. From the start to the end of the season, the length of the day increases by 1 hour, 20 minutes, implying an average daily increase of 54 seconds, and weekly increase of 6 minutes, 18 seconds.

The shortest day of the winter is December 21, with 9 hours, 59 minutes of daylight and the longest day is February 28, with 11 hours, 28 minutes of daylight.

Hours of Daylight and Twilight in the Winter in Richardson

Hours of Daylight and Twilight in the Winter in RichardsonDecJanFeb0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringDec 219 hr, 59 minDec 219 hr, 59 minnightnightdaydayFeb 2811 hr, 28 minFeb 2811 hr, 28 minFeb 110 hr, 38 minFeb 110 hr, 38 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the winter in Richardson is 7:30 AM on January 7 and the earliest sunrise is 35 minutes earlier at 6:55 AM on February 28.

The earliest sunset is 5:19 PM on December 4 and the latest sunset is 1 hour, 4 minutes later at 6:23 PM on February 28.

Daylight saving time is observed in Richardson during 2024, but it neither starts nor ends during the winter, so the entire season is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:18 AM and sets 14 hours, 20 minutes later, at 8:38 PM, while on December 21, the shortest day of the year, it rises at 7:26 AM and sets 9 hours, 59 minutes later, at 5:24 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in the Winter in Richardson

Sunrise & Sunset with Twilight and Daylight Saving Time in the Winter in RichardsonDecJanFeb2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMFallSpring6:55 AM6:55 AMFeb 286:23 PMFeb 286:23 PM7:14 AM7:14 AMDec 45:19 PMDec 45:19 PM7:30 AM7:30 AMJan 75:36 PMJan 75:36 PM7:21 AM7:21 AMFeb 15:59 PMFeb 15:59 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the winter. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in the Winter in Richardson

Solar Elevation and Azimuth in the Winter in RichardsonDecJanFeb12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMFallSpring0102030010203040
northeastsouthwest
Solar elevation and azimuth in the the winter of 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for the winter of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in the Winter in Richardson

Moon Rise, Set & Phases in the Winter in RichardsonDecJanFeb12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringNov 17:48 AMNov 17:48 AMNov 153:29 PMNov 153:29 PMDec 112:22 AMDec 112:22 AMDec 153:02 AMDec 153:02 AMDec 304:28 PMDec 304:28 PMJan 134:28 PMJan 134:28 PMJan 296:37 AMJan 296:37 AMFeb 127:54 AMFeb 127:54 AMFeb 276:45 PMFeb 276:45 PMMar 141:55 AMMar 141:55 AMMar 295:58 AMMar 295:58 AM7:53 AM7:53 AM6:33 PM6:33 PM5:08 PM5:08 PM7:58 AM7:58 AM5:30 PM5:30 PM4:35 PM4:35 PM7:55 AM7:55 AM7:32 AM7:32 AM5:12 PM5:12 PM5:28 PM5:28 PM8:20 AM8:20 AM7:45 AM7:45 AM6:17 PM6:17 PM5:25 PM5:25 PM7:27 AM7:27 AM6:50 AM6:50 AM6:15 PM6:15 PM7:14 PM7:14 PM7:49 AM7:49 AM8:23 PM8:23 PM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Richardson is essentially constant during the winter, remaining within 1% of 1% throughout.

The lowest chance of a muggy day during the winter is 0% on January 21.

For reference, on July 2, the muggiest day of the year, there are muggy conditions 83% of the time, while on January 21, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Winter in Richardson

Humidity Comfort Levels in the Winter in RichardsonDecJanFeb0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%FallSpringJan 210%Jan 210%Dec 12%Dec 12%Feb 281%Feb 281%Jan 11%Jan 11%drydryhumidhumidmuggymuggycomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Richardson is gradually increasing during the winter, increasing from 10.4 miles per hour to 11.3 miles per hour over the course of the season.

For reference, on April 1, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on August 22, the calmest day of the year, the daily average wind speed is 8.0 miles per hour.

Average Wind Speed in the Winter in Richardson

Average Wind Speed in the Winter in RichardsonDecJanFeb0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mphFallSpringDec 110.4 mphDec 110.4 mphFeb 2811.3 mphFeb 2811.3 mphJan 110.4 mphJan 110.4 mphFeb 110.6 mphFeb 110.6 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Richardson during the winter is predominantly out of the south from December 1 to December 22 and from February 6 to February 28 and the north from December 22 to February 6.

Wind Direction in the Winter in Richardson

Wind Direction in the Winter in RichardsonSNSDecJanFeb0%100%20%80%40%60%60%40%80%20%100%0%FallSpringsouthnortheastwest
northeastsouthwest
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 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Richardson typically lasts for 9.0 months (273 days), from around February 29 to around November 27, rarely starting before January 28 or after March 23, and rarely ending before November 3 or after December 18.

The winter in Richardson is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season reaching a low of 1% on January 4.

Time Spent in Various Temperature Bands and the Growing Season in the Winter in Richardson

Time Spent in Various Temperature Bands and the Growing Season in the Winter in RichardsonDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpringDec 143%Dec 143%Feb 2849%Feb 2849%Jan 11%Jan 11%Feb 113%Feb 113%90%Nov 390%Nov 3freezingvery coldcoldcoolcomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Richardson are very rapidly decreasing during the winter, decreasing by 5,957°F, from 6,192°F to 235°F, over the course of the season.

Growing Degree Days in the Winter in Richardson

Growing Degree Days in the Winter in RichardsonDecJanFeb0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°FFallSpringDec 16,192°FDec 16,192°FFeb 28235°FFeb 28235°F
The average growing degree days accumulated over the course of the winter, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Richardson is increasing during the winter, rising by 1.4 kWh, from 3.0 kWh to 4.4 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 2.8 kWh on December 21.

Average Daily Incident Shortwave Solar Energy in the Winter in Richardson

Average Daily Incident Shortwave Solar Energy in the Winter in RichardsonDecJanFeb0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhFallSpringDec 212.8 kWhDec 212.8 kWhDec 13.0 kWhDec 13.0 kWhFeb 284.4 kWhFeb 284.4 kWhFeb 13.5 kWhFeb 13.5 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Richardson are 32.948 deg latitude, -96.730 deg longitude, and 627 ft elevation.

The topography within 2 miles of Richardson contains only modest variations in elevation, with a maximum elevation change of 135 feet and an average elevation above sea level of 625 feet. Within 10 miles also contains only modest variations in elevation (364 feet). Within 50 miles contains only modest variations in elevation (741 feet).

The area within 2 miles of Richardson is covered by artificial surfaces (95%), within 10 miles by artificial surfaces (90%), and within 50 miles by grassland (37%) and cropland (33%).

This report illustrates the typical weather in Richardson, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Richardson.

For each station, the records are corrected for the elevation difference between that station and Richardson according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Richardson is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Richardson and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Richardson and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

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 . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. 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.

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.

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