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Contents
- The climate of Richardson
- The best time to visit Richardson
- The worst time to visit Richardson
- Spring weather in Richardson
- Summer weather in Richardson
- Autumn weather in Richardson
- Winter weather in Richardson
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Richardson
Positioned in the humid subtropical climate zone, within the Köppen climate classification of Cfa, Richardson, Texas enjoys a diverse weather profile throughout the year. The climatological patterns represent a mixture of warm summers and mildly cold winters, with no significant dry period.
The weather exhibits noticeable variability across different months. Monthly average high temperatures fluctuate from 54°F (12.2°C) in January to a peak of 95.7°F (35.4°C) in August. On the contrary, low temperatures demonstrate a similar pattern, varying from 38.7°F (3.7°C) in January to a lofty 76.5°F (24.7°C) in August.
Humidity levels in Richardson remain fairly consistent year-round. Relative humidity hovers around 65% in the cooler months and a slight but noticeable uptick is observed during the warmer months, around 73% in May. Rainfall consistently graces the region throughout year, with an average monthly estimate between 0.75" (19mm) in February to 1.97" (50mm) in May.
unique weather patterns are perceived in the region as well. The driest months are observed at the start and end of the year, with only 0.87" (22mm) and 0.94" (24mm) of rain in January and December respectively. On the other hand, the wettest month is May.
The weather exhibits noticeable variability across different months. Monthly average high temperatures fluctuate from 54°F (12.2°C) in January to a peak of 95.7°F (35.4°C) in August. On the contrary, low temperatures demonstrate a similar pattern, varying from 38.7°F (3.7°C) in January to a lofty 76.5°F (24.7°C) in August.
Humidity levels in Richardson remain fairly consistent year-round. Relative humidity hovers around 65% in the cooler months and a slight but noticeable uptick is observed during the warmer months, around 73% in May. Rainfall consistently graces the region throughout year, with an average monthly estimate between 0.75" (19mm) in February to 1.97" (50mm) in May.
unique weather patterns are perceived in the region as well. The driest months are observed at the start and end of the year, with only 0.87" (22mm) and 0.94" (24mm) of rain in January and December respectively. On the other hand, the wettest month is May.
The best time to visit Richardson
The visitor's sweet spot in Richardson is arguably between late spring and early summer, specifically from April to June. During this period, the city witnesses comfortable weather, with average high temperatures ranging from 74.8°F (23.8°C) to 91°F (32.8°C). These favourable weather conditions, combined with a medium-high sunshine index of about 8.1 hours to 10.2 hours per day, and relatively lower rain statistics, make this period an ideal time to enjoy the city's offerings without significant weather disruptions.
The worst time to visit Richardson
The least favourable period to visit Richardson could be July and August. Those months experience the peak of summer heat with average high temperatures reaching 94.6°F (34.8°C) and 95.7°F (35.4°C) respectively. Lower than average rainfall, coupled with a UV index of 7, and average relative humidity in the low 60s%, combine to create challenging conditions for many visitors.
Spring weather in Richardson
Spring in Richardson, extending from March to May, offers delightful weather marked by a gradual warming trend. Average high temperatures progressively ascend from 66.7°F (19.3°C) in March to 81.9°F (27.7°C) in May. Concurrently, precipitation levels peak to the year's highest of 1.97" (50mm) in May. Days with sunshine are plentiful and daylight lasts for approximately 12 hours to 13.9 hours, offering ample opportunities for outdoor activities.
Summer weather in Richardson
Summers in Richardson, spanning June to August, are understandably hot. Average high temperatures reach their zenith hitting 94.6°F (34.8°C) and 95.7°F (35.4°C) in July and August. This is coupled with lower precipitation stats, ranging from 1.42" (36mm) in June to 1.5" (38mm) in August and declining relative humidity between 67% to 56%. Despite the heat, summer days offer ample sunshine with 14.1 hours to 13.3 hours of daylight.
Autumn weather in Richardson
Autumn in Richardson arrives in September and lasts till November. Characterised by falling temperatures and decreasing daylight hours, the season offers a pleasing shift from the heat of the summer. High temperatures progressively dip from 87.6°F (30.9°C) in September to 64°F (17.8°C) in November. However, the season sees slightly higher rain levels of up to 1.93" (49mm) in October, yet the period is marked by ample sunshine, between 8.6 hours to 5.8 hours per day.
Winter weather in Richardson
Winter mornings in Richardson are cool, with low temperatures ranging from 38.7°F (3.7°C) in January to 41.5°F (5.3°C) in February, and high temperatures between 54°F (12.2°C) to 57.7°F (14.3°C). The season observes the year's lowest precipitation levels, with rainfall numbers falling to 0.94" (24mm) in both December and January. Daylight hours shorten, hovering around 10 hours, yet sunshine remains steady at around 5.6 hours a day. Infrequent days of light snowfall can be experienced, with 0.04" (1mm) of snow in both December and January.
Weather in January
January unveils Richardson, Texas with cooler weather. Visibly crisp conditions, sliding temperatures command the scene as the new year begins. With generally clear skies, accompanied by occasional bouts of rain, the weather is quite unpredictable. Weather in January »
Weather in February
Transitioning into February, the pleasantries of winter evolve in Richardson. The fleeting chill of January subsides, paving the way for slightly warmer days. Precipitation remains a constant companion this time of the year, complemented by an increased frequency of snowfall. Weather in February »
Weather in March
As the city of Richardson ventures into March, the introduction of spring peeks around the corner. The general weather pattern metamorphoses into slightly warmer, comfortable conditions. There is more sunshine, reduced cloudiness, and softer winds manifesting a noticeable change from the colder months. Weather in March »
Weather in April
April in Richardson displays its range of spring weather at its finest. Holiday-goers are graced with agreeable temperatures, pleasant afternoons, and plates of radiant sunshine. The city sees fewer rainy days in comparison to its preceding months. Weather in April »
Weather in May
Weather in Richardson during May optimizes the richness of spring. It is synonymous with longer days, diminished rainfall, and more significant intervals of sunshine. The heat of summer begins to tease as the days grow increasingly warmer. Weather in May »
Weather in June
June signifies the enclosure of spring and the advent of summer in Richardson. Characterized by sultry days, light breezes, and barely-there precipitation, the city glows under the summer sun. The humidity dips slightly, offering a break from the dense atmosphere typifying the earlier months. Weather in June »
Weather in July
Richardson in July is the quintessential summer postcard. The city is set ablaze with heat, and rain showers are scarce. With 14.1 hours of sunshine and an attendant decrease in cloud cover, the city thrives in the summer bloom. The hot temperatures of 76.3°F (24.6°C) to 94.6°F (34.8°C) highlight the peak of summer in Richardson. July's onset brings an average high-temperature of a still tropical 94.6°F (34.8°C), showing a minute difference from June's 91°F (32.8°C). Weather in July »
Weather in August
Searing August in Richardson portrays the last hurrah of summer. Highs persistently hover in the cloud-free skies, coupled with ferociously hot afternoons. Overall, the daylight hours start receding, making way for the forthcoming fall. Weather in August »
Weather in September
September in Richardson brings relief from the relentless summer blaze. The weather begins to soften, with temperature and humidity levels subtly dropping. The city experiences a palpable reduction in rainfall, marking the slow retreat of summer. Weather in September »
Weather in October
As Richardson steps into October, residents anticipate cooler, luscious fall weather. Following the dynamics between dwindling daylight, fading sunshine, and mild winds, the atmosphere feels refreshingly different. The odds of seeing rain significantly rise, transforming the city's hues. Weather in October »
Weather in November
November is when Richardson starts to vibe winter. Balmy days give way to brisk weather conditions evocative of the impending winter season. The frequency of rainfall, along with the number of daylight hours, declines significantly. Weather in November »
Weather in December
Rounding off the year, December in Richardson is synonymous with diminished daylight, increased cloudiness, and a proportional reduction in sunshine. The likelihood for a white Christmas is minimal, with rare bouts of snowfall. Weather in December »
Updated: Jun 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
Richardson's January weather, with an average high temperature of 54°F (12.2°C) and an average low temperature of 38.7°F (3.7°C), tends to be the coldest of the year.
How many days does it rain?
Throughout the year, there are 118.4 rainfall days, and 15.51" (394mm) of precipitation is accumulated.
When does it snow?
January, February, November and December are months with snowfall.
How many days does it snow?
Throughout the year, there are 2.3 snowfall days, and 0.51" (13mm) of snow is accumulated.
What are the months with the lowest UV index?
January and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the driest month?
February is the month with the least rainfall. Rain falls for 7.8 days and accumulates 0.75" (19mm) of precipitation.
What is the snowiest month in Richardson?
February is the month with the most snowfall. Snow falls for 1.3 days and accumulates 0.31" (8mm) of snow.
When it does not snow?
In Richardson, snow does not fall in March through October.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the most humid month?
With an average relative humidity of 73%, May is the most humid month.
What is the rainiest month?
May is the month with the most rainfall. Rain falls for 11.9 days and accumulates 1.97" (50mm) of precipitation.
What are the months with the highest UV index?
The months with the highest UV index in Richardson are May through August, with an average maximum UV index of 7.
When are the longest days?
The month with the longest days is June, with an average of 14h and 18min of daylight.
What time of the year is the hottest?
In Richardson, August is the month with the highest recorded average temperatures, measuring a high of 95.7°F (35.4°C) and a low of 76.5°F (24.7°C).
What is the least humid month?
With an average relative humidity of 56%, August is the least humid month.
What month has the most sunshine?
The month with the most sunshine in Richardson is August, with an average of 11.1h of sunshine.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 10h and 0min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.6h of sunshine.
Average temperature
Richardson, TX
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (54°F).
The month with the highest average low temperature is August (76.5°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure
Richardson, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Richardson, TX
- Average wind speed in January:
9.1mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.9mph - Average wind speed in May:
9mph - Average wind speed in June:
8mph
- Average wind speed in July:
7.2mph - Average wind speed in August:
6.9mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.1mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity
Richardson, TX
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (56%).
Average rainfall
Richardson, TX
- Average rainfall in January:
0.87" - Average rainfall in February:
0.75" - Average rainfall in March:
1.61" - Average rainfall in April:
1.38" - Average rainfall in May:
1.97" - Average rainfall in June:
1.42"
- Average rainfall in July:
1.14" - Average rainfall in August:
1.5" - Average rainfall in September:
1.06" - Average rainfall in October:
1.93" - Average rainfall in November:
0.94" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days
Richardson, TX
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
10.1 days - Average rainfall days in May:
11.9 days - Average rainfall days in June:
10.8 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
10.9 days - Average rainfall days in September:
13.1 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is September (13.1 days).
The month with the least rainy days is January (5.4 days).
Average snowfall
Richardson, TX
The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days
Richardson, TX
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
1.3 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Richardson, TX
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 4min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
11h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
Richardson, TX
- Average sunshine days in January:
23.7 days - Average sunshine days in February:
17.6 days - Average sunshine days in March:
16.9 days - Average sunshine days in April:
16.5 days - Average sunshine days in May:
15.9 days - Average sunshine days in June:
16 days
- Average sunshine days in July:
17.2 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
20.7 days - Average sunshine days in December:
20.8 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is September (14.5 days).
Average UV index
Richardson, TX
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover
Richardson, TX
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
Richardson, TX
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Richardson, Texas, USA
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