Climate and monthly weather forecast
Richardson, TX

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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 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. As Richardson transitions into July, the average high-temperature stands at a still tropical 94.6°F (34.8°C), offering little variation from the preceding month. 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 »
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Frequently asked questions

What is the coldest month in Richardson?

January, with an average high of 54°F (12.2°C) and a low of 38.7°F (3.7°C), signifies the coldest month of the year in Richardson.

How many days does it rain in Richardson?

Throughout the year, there are 118.4 rainfall days, and 15.51" (394mm) of precipitation is accumulated.

When does it snow in Richardson?

January, February, November and December are months with snowfall in Richardson.

How many days does it snow in Richardson?

Throughout the year, in Richardson, Texas, there are 2.3 snowfall days, and 0.51" (13mm) of snow is accumulated.

When is the lowest UV index in Richardson?

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Richardson.

What is the driest month in Richardson?

The month with the least rainfall is February, when the rain falls for 7.8 days and typically collects 0.75" (19mm) of precipitation.

When does it snow the most 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?

In Richardson, Texas, snow does not fall in March through October.

When is Daylight Saving Time (DST) in Richardson?

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 in Richardson?

May is the most humid month, with an average relative humidity of 73%.

What is the wettest month in Richardson?

The month with the most rainfall in Richardson is May, when the rain falls for 11.9 days and typically aggregates up to 1.97" (50mm) of precipitation.

When is the highest UV index in Richardson?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

When are the longest days in Richardson?

The month with the longest days is June, with an average of 14h and 18min of daylight.

What is the warmest month in Richardson?

Richardson notes the warmest temperatures in August, with a average high of 95.7°F (35.4°C) and a low of 76.5°F (24.7°C).

What is the least humid month in Richardson?

With an average relative humidity of 56%, August is the least humid month.

What month has the most sunshine in Richardson?

August has the most sunshine of the year in Richardson, with an average of 11.1h of sunshine.

What is the month with the shortest days in Richardson?

With an average of 10h and 0min of daylight, December has the shortest days of the year in Richardson, Texas.

What is the month with the least sunshine in Richardson?

The month with the least sunshine in Richardson is December, with an average of 5.6h of sunshine.

Average temperature
Richardson, TX

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).

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Average pressure
Richardson, TX

Average pressure - Richardson, TX

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Richardson, TX

Average wind speed - Richardson, TX

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).

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Average rainfall
Richardson, TX

Average rainfall - Richardson, TX

The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days
Richardson, TX

Average rainfall days - Richardson, TX

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).

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Average snowfall
Richardson, TX

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").

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Average snowfall days
Richardson, TX

Average snowfall days - Richardson, TX

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).

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Average daylight / Average sunshine
Richardson, TX

Average daylight / Average sunshine - Richardson, TX

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).

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).

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Average sunshine days
Richardson, TX

Average sunshine days - Richardson, TX

The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is September (14.5 days).

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Average UV index
Richardson, TX

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).

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Average visibility
Richardson, TX

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).

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Richardson, Texas, USA

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