Climate and monthly weather forecastHouston, TX
Climate and monthly weather forecast
The climate of Houston
Known as the fourth most populous city in the United States, Houston, Texas resides in the Köppen Climate zone, characterized as Humid subtropical, with no dry season. The relative humidity stays at a consistent average around mid-70%. Temperatures tend to fluctuate significantly over the year, with the lowest average low temperature being 46°F (7.8°C) in January and the highest average high temperature reaching 94.3°F (34.6°C) in August. The average wind speed remains steady, varying between 5.9mph (9.5km/h) to 8.6mph (13.8km/h), and maximum wind speed rarely exceeding 9.2mph (14.8km/h).Rainfall presents a notable change in its distribution during the year. An increase is observed from May, with the heaviest rainfall in September, measuring at 4.49" (114mm). The city experiences more rainfall days from June to September, peaking at 19.5 days. Despite this, months such as February and November also record substantial rainfall.
Houston's snowfall is sparse, with recorded occurrences only in January and December, and the measurements remain negligible. Coupled with longer daylight hours, increasing from 10.3 hours in December to 14 hours in June, the generally mild weather patterns reach a turning point in summer with a rise in ultraviolet index to 7.
The best time to visit Houston
When considering a visit to Houston, the timing would significantly depend on weather preferences of the traveller. For those seeking a cooler and more temperate climate, the ideal time to visit would be between March and May. The average high temperatures within these months fall between 72.1°F (22.3°C) to 85.8°F (29.9°C), providing an agreeable weather for outdoor exploring. The city sees a relative decrease in rainfall, making outings less cumbersome and more enjoyable.The worst time to visit Houston
The humid subtropical climate of Houston experiences hotter and wetter conditions from June to September. During these months, the average high temperatures rise above 88.3°F (31.3°C) and it is accompanied by the highest rainfall volumes, reaching up to 4.49" (114mm). These increasing levels of both temperature and rainfall may make daily visits and outings somewhat uncomfortable, especially for individuals not accustomed to higher humidity levels.Spring weather in Houston
Houston witnesses the onset of spring from March, with temperature highs ranging from 72.1°F (22.3°C) to 85.8°F (29.9°C) and lows between 56.7°F (13.7°C) to 70°F (21.1°C). The rainfall amount in spring registers between 2.09" (53mm) to 4.45" (113mm), with rainfall days incrementing from 13.8 to 14.8 days. Spring in Houston is marked by a moderate increase in daylight hours from 12 hours to 13.7 hours, coupled with an escalation in the sunshine hours.Summer weather in Houston
In Houston, summer extends from June to August. During this time, the city experiences its highest temperatures, with a high of 94.3°F (34.6°C) and an average low of 77.5°F (25.3°C). The average rainfall in these months ranges from 3.27" (83mm) to 3.9" (99mm) and the rainfall days remain above 17 days. Despite higher daylight hours, peaking at 14 hours in June, the city experiences notably elevated humidity levels.Autumn weather in Houston
Starting from September, autumn in Houston records a steady decline in temperatures, from an average high of 88.3°F (31.3°C) to 70.3°F (21.3°C) by November. The lowest temperature during these months drops from 72.7°F (22.6°C) to 55°F (12.8°C). In terms of rainfall, September witnesses the highest average rainfall of 4.49" (114mm) while November sees a significant drop to 2.17" (55mm). Alongside, the city observes a decrease in both daylight and sunshine hours, falling from 12.3 hours to 10.7 hours and from 8.6 hours to 5.6 hours respectively.Winter weather in Houston
Houston greets the winter season in December, which lasts up until February. Witnessing a further dip in temperatures with an average high ranging from 61.3°F (16.3°C) to 63°F (17.2°C) while the average lows fluctuate between 46°F (7.8°C) to 50.5°F (10.3°C). The rainfall averages between 2.13" (54mm) to 1.77" (45mm) in these months, and the number of rainfall days vary from 11.8 to 13.1. Although, Houston experiences its shortest daylight hours, from 10.3 hours to 11.2 hours, the city also records its longest sunshine duration in winter, reaching a maximum of 5.8 hours in February.Weather in January
January heralds the start of a new year in Houston, Texas, a time when the city is winding down from the holiday season and starting to experience the full brunt of winter. The month presents a stark contrast to the vibrant summer months, as the city is cloaked in an atmosphere of cool temperatures and foggy mornings. Weather in January »Weather in February
As the calendar flips to February, the weather in Houston begins to slowly transition from winter chills to mild warmth. The city is less crowded, offering a more relaxed and peaceful ambience. The weather changes are subtle, yet noticeable, with the onset of longer daylight and declining snow chances. Weather in February »Weather in March
March marks the start of spring in Houston. The transformation that the city undergoes from a cold, quiet place in winter to a vibrant, colourful city in spring is quite remarkable. The air becomes warmer, flowers start to bloom, and the overall mood of the city improves. Weather in March »Weather in April
April weather in Houston continues the upward trend in temperature, with warm conditions becoming more frequent. As the city transitions firmly into spring, the atmosphere turns cheerful and lively. April brings a burst of colour to the city with various flowers in full bloom. Weather in April »Weather in May
May brings in the official start of summer in Houston. The city shimmers under the hot sun and becomes bustling with a range of summer activities. May is a festive time in Houston, with several outdoor festivals and concerts that take advantage of the fine weather. Weather in May »Weather in June
June in Houston, Texas is a synonym for pure summer joy. The extensive daylight hours and warmer climate signal the perfect time for outdoor activities. As the schools break for summer, the city witnesses an influx of local and outstation vacationers. Weather in June »Weather in July
July is typically the hottest month in Houston with the mercury peaking at 93.4°F (34.1°C). It's a time when the city thrives under the summer sun and embraces the hustle and bustle of the season. The summer heat does not diminish the vibrancy of Houston, but rather adds to the festival-like atmosphere that envelops the city during this time. Weather in July »Weather in August
Following the peak of summer in July, August sees a continued prevalence of the sweltering heat in Houston. Nonetheless, Houston's citizens and visitors continue to enjoy the outdoors, albeit in a slightly shorter and more relaxed fashion. Weather in August »Weather in September
The arrival of September sees the start of a much-awaited break from the intense summer heat in Houston. As autumn encroaches, the city begins the transition into a calmer, more relaxed atmosphere. September brings respite to Houston in the form of a decrease in temperatures and relative humidity, enhancing the appeal of outdoor activities. Weather in September »Weather in October
October in Houston brings with it a breath of fresh air as the city basks in the glory of Autumn. The decline in temperature continues through the month, setting the stage for pleasantly cool weather. Fall foliage begins to appear giving the city a beautiful rustic look. Weather in October »Weather in November
The arrival of November symbolizes the impending winter season in Houston. The autumn leaves give way to shorter days and chilly winds, marking a significant transition in the city's weather. As the temperature continues to drop, residents begin to prepare for the holiday season. Weather in November »Weather in December
December illuminates Houston with festive lights and celebrations. The bee-hive of activity, coupled with the vibrant decorations, adds a magical touch to the city's wintry landscape. As the final month of the year, December invites residents and visitors alike to savor the joyful atmosphere that envelops the city. Weather in December »Updated: Jul 31, 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
The coldest temperatures occur during January, when averages reach a peak of 61.3°F (16.3°C) and a low of 46°F (7.8°C).
Throughout the year, there are 180.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.
Months with snowfall are January and December.
Throughout the year, there are 0.2 snowfall days, and 0.12" (3mm) of snow is accumulated.
With an average relative humidity of 78%, February is the most humid month.
February is the month with the least rainfall. Rain falls for 13.1 days and accumulates 1.77" (45mm) of precipitation.
February through November are months without snowfall.
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.
May through August, with an average maximum UV index of 7, are months with the highest UV index.
The month with the longest days is June, with an average of 14h and 0min of daylight.
Houston's August weather, with an average high temperature of 94.3°F (34.6°C) and an average low temperature of 77.5°F (25.3°C), tends to be the warmest of the year.
The months with the lowest humidity are August and October, with an average relative humidity of 70%.
The month with the most sunshine is August, with an average of 10.5h of sunshine.
The month with the most rainfall is September, when the rain falls for 19.5 days and typically aggregates up to 4.49" (114mm) of precipitation.
The month with the most snowfall is December, when snow falls for 0.1 days and typically aggregates up to 0.08" (2mm) of snow.
With an average of 10h and 18min of daylight, December has the shortest days of the year.
December has the least sunshine of the year, with an average of 4.8h of sunshine.
With an average maximum UV index of 3, December is the month with the lowest UV index.
Average temperature
Houston, TX
The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (61.3°F).
The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure
Houston, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Houston, TX
- Average wind speed in January:
7.7mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.2mph - Average wind speed in April:
8.6mph - Average wind speed in May:
8mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
5.9mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity
Houston, TX
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are August and October (70%).
Average rainfall
Houston, TX
- Average rainfall in January:
2.13" - Average rainfall in February:
1.77" - Average rainfall in March:
2.09" - Average rainfall in April:
2.36" - Average rainfall in May:
4.45" - Average rainfall in June:
3.27"
- Average rainfall in July:
3.15" - Average rainfall in August:
3.9" - Average rainfall in September:
4.49" - Average rainfall in October:
3.07" - Average rainfall in November:
2.17" - Average rainfall in December:
2.52"
The wettest month (with the highest rainfall) is September (4.49").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days
Houston, TX
- Average rainfall days in January:
11.8 days - Average rainfall days in February:
13.1 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
19.1 days - Average rainfall days in September:
19.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
12.8 days - Average rainfall days in December:
13.9 days
The month with the highest number of rainy days is September (19.5 days).
The month with the least rainy days is January (11.8 days).
Average snowfall
Houston, TX
The month with the highest snowfall is December (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Houston, TX
- Average snowfall days in January:
0.1 days - Average snowfall days in February:
0 days - Average snowfall days in March:
0 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 days - Average snowfall days in December:
0.1 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Houston, TX
- Average daylight in January:
10h and 30min - Average daylight in February:
11h and 12min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 54min - Average daylight in May:
13h and 42min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 48min - Average daylight in August:
13h and 12min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 42min - Average daylight in December:
10h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
5h and 48min - Average sunshine in March:
6h and 48min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days
Houston, TX
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
14.7 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
11.4 days - Average sunshine days in August:
9.6 days - Average sunshine days in September:
7.9 days - Average sunshine days in October:
16.1 days - Average sunshine days in November:
15.3 days - Average sunshine days in December:
14.6 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is September (7.9 days).
Average UV index
Houston, TX
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Houston, TX
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Houston, 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).
