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Contents
- The climate of Pasadena
- The best time to visit Pasadena
- The worst time to visit Pasadena
- Spring weather in Pasadena
- Summer weather in Pasadena
- Autumn weather in Pasadena
- Winter weather in Pasadena
- 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 Pasadena
Nestled in the state of Texas, USA, Pasadena experiences a Humid subtropical climate with no dry season, noted as Cfa on the Köppen climate classification. The city doesn't experience extreme temperature fluctuations throughout the year, with average high temperatures ranging from 60.6°F (15.9°C) in January to 92.8°F (33.8°C) in August and average lows ranging from 46.9°F (8.3°C) in January to 78.4°F (25.8°C) in August.
Rainfall can be expected throughout the year with minimal variation in frequency, ranging from 14.8 days on average in March to a peak of 21.3 days by the wet months of August and September. Total monthly rainfall varies from a low of 1.89" (48mm) in February to a high of 5.94" (151mm) in September. The city has negligible snowfall, only registering on average about 0.04" (1mm) in January and December.
In terms of daylight, the longest days are observed in June with an average of 14 hours of daylight, while the shortest days come in December with an average daylight of 10.3 hours.
Rainfall can be expected throughout the year with minimal variation in frequency, ranging from 14.8 days on average in March to a peak of 21.3 days by the wet months of August and September. Total monthly rainfall varies from a low of 1.89" (48mm) in February to a high of 5.94" (151mm) in September. The city has negligible snowfall, only registering on average about 0.04" (1mm) in January and December.
In terms of daylight, the longest days are observed in June with an average of 14 hours of daylight, while the shortest days come in December with an average daylight of 10.3 hours.
The best time to visit Pasadena
Considering that Pasadena has no dry season and rains are evenly spread throughout the year, the best time to visit would be when temperatures are moderate and daily sunshine hours are high. This tends to be in May and June when average high temperatures range from 84.4°F (29.1°C) to 90.1°F (32.3°C) and average sunshine duration reaches 9.7 hours to 10.6 hours respectively.
The worst time to visit Pasadena
The worst time to visit Pasadena is in the peak of summer, specifically in August. Despite the high temperatures reaching up to 92.8°F (33.8°C), the most significant factor making this time undesirable is the high rainfall. August gets the highest rainfall of the year, a total of 5.43" (138mm) that's spread across 21.3 days, coupled with the high humidity level of 71%.
Spring weather in Pasadena
Spring in Pasadena is characterized by gradually rising temperatures and an increased frequency of rainfall. From March to May, average high temperatures range from 71.1°F (21.7°C) to 84.4°F (29.1°C) while average low temperatures move from 57.2°F (14°C) to 70.3°F (21.3°C). Rainfall days increase from 14.8 days in March to 15.2 days in May with total rainfall following a similar pattern.
Summer weather in Pasadena
During summer, from June to August, Pasadena experiences its highest temperatures and rainfall, with average high temperatures ranging from 90.1°F (32.3°C) to 92.8°F (33.8°C). These months also have heightened rainfall, with average monthly rainfall recording at 4.09" (104mm) in June, 4.33" (110mm) in July, and peaking at 5.43" (138mm) in August.
Autumn weather in Pasadena
In autumn, from September to November, temperatures in Pasadena start to decline from the summer highs. Average high temperatures fall from 87.6°F (30.9°C) in September to 70.2°F (21.2°C) in November. Rainfall slowly tapers off after reaching its maximum in September, with average monthly rainfall reducing to 3.46" (88mm) in October and further to 2.36" (60mm) in November.
Winter weather in Pasadena
Winter in Pasadena, from December to February, ushers in the coolest weather of the year. Average high temperatures in these months range from 60.6°F (15.9°C) in January to 64.2°F (17.9°C) in February, while the average lows range from 46.9°F (8.3°C) to 51.1°F (10.6°C). Rainfall becomes relatively scarce, with average monthly totals ranging from 1.89" (48mm) in February to 2.6" (66mm) in December.
Weather in January
Pasadena city welcomes the new year with a subtly cool weather. The climate remains much like December, bearing similar characteristics, except for a slight increase in humidity, expressing the ongoing winter spirit. With a gentle wind in the air, the atmosphere can feel a bit chilly, encouraging locals to reach for their warm clothing. Weather in January »
Weather in February
Moving past the chills of January, February in Pasadena sees a modest rise in both low and high temperatures. The city experiences more daylight hours, heralding the upcoming change of seasons. While the wind speed picks up slightly, it's not enough to create significant discomfort for residents or visitors. Weather in February »
Weather in March
March marks the onset of spring in Pasadena, treating the city to a favorable blend of warmth and moisture. With an average high temperature of 71.1°F (21.7°C), the month becomes noticeably warmer compared to February. The increase in temperature comes alongside a decrease in humidity, subtle changes to indicate the impending arrival of warmer months. Weather in March »
Weather in April
Paying its tribute to spring, April presents a noticeable escalation in warmer temperatures in Pasadena. The prevalence of blue skies and sunshine grows, with over 8.6 hours of sunshine heralding brighter days ahead. Alongside slightly reduced cloud cover, the relaxed wind speed enriches the mildness of the weather. Weather in April »
Weather in May
May carries the warmth of April further, nudging the maximum temperature to 84.4°F (29.1°C) and emphasizing the city's steady stride into summer. Daylight hours lengthen, and Pasadena basks in nearly 14 hours of sunshine every day. Weather in May »
Weather in June
In June, summer is in full swing in Pasadena, with temperatures peaking to the year's highs. The month inherits May's benevolent spirit, providing over 14 hours of daylight and a substantial amount of sunshine. Even with ample heat, the month keeps excellent control over wind speed, ensuring a consistent and comfortable atmosphere. Weather in June »
Weather in July
July presents the peak of summer in Pasadena, showing the highest temperatures recorded during the year. Residents enjoy an ample 13.8 hours of daylight, which combined with tenacious sunshine make for a typical lively, bright Texan summer. Weather in July »
Weather in August
August keeps alive the brilliant summer spell in Pasadena, bearing a resemblance to the preceding month. Residents continue to enjoy long daylight hours and sunshine, with days stretching slightly longer than July. The sunshine feels hot yet generous, moderated by a slight breeze and a balanced humidity level. Weather in August »
Weather in September
As Pasadena enters September, residents start to experience relief from the extensive summer heat. The decline in temperature brings a welcome change, allowing for a transition between the high heat of August and the chillier months to come. Weather in September »
Weather in October
With October, the autumn season finally blossoms in Pasadena. The weather continues its soothing decline from September's temperatures, bringing about a significant change in daily highs and lows. The steady wind brings a pleasant relief, while the city basks in over 11 hours of daylight. Weather in October »
Weather in November
The last month of the autumn, November, is pleasant month in Pasadena, Texas, with temperature in the range of an average low of 56.1°F (13.4°C) and an average high of 70.2°F (21.2°C). In the transition to November, Pasadena observes a drop in the average high-temperature, moving from a warm 80.8°F (27.1°C) in October to a pleasant 70.2°F (21.2°C). Weather in November »
Weather in December
Welcoming the advent of winter, December in Pasadena offers cooler temperature ranges from 50.2°F (10.1°C) to 62.8°F (17.1°C). The change is clear as the length of daylight shrinks, and winter's shorter, cooler days become the norm. Weather in December »
Updated: Aug 9, 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 are the coldest months?
The lowest temperatures are recorded in January, with averages reaching a high of 60.6°F (15.9°C) and a low of 46.9°F (8.3°C).
How many days does it rain?
In Pasadena, during the entire year, the rain falls for 190.8 days and collects up to 41.93" (1065mm) of precipitation.
When does it snow?
Months with snowfall are January and December.
What is the snowiest month?
The months with the most snowfall are January and December, with an average 0.04" (1mm) of accumulated snow.
How many days does it snow?
Throughout the year, in Pasadena, there are 0.6 snowfall days, and 0.08" (2mm) of snow is accumulated.
When is the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4.
What is the most humid month?
February is the most humid month, with an average relative humidity of 79%.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 13 days and typically collects 1.89" (48mm) of precipitation.
When it does not snow?
February through November are months without snowfall.
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 are the months with the highest UV index?
May through August, with an average maximum UV index of 7, are months with the highest UV index.
When are the longest days?
With an average of 14h and 0min of daylight, June has the longest days of the year.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.8h of sunshine.
What is the hottest time of year?
Pasadena's August weather reaches an average high of 92.8°F (33.8°C) and an average low of 78.4°F (25.8°C), making it the warmest month.
What is the least humid month?
The months with the lowest humidity are August and October, with an average relative humidity of 71%.
What is the rainiest month?
September is the month with the most rainfall. Rain falls for 21.3 days and accumulates 5.94" (151mm) of precipitation.
What is the month with the shortest days in Pasadena?
With an average of 10h and 18min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 4.9h of sunshine.
Average temperature
Pasadena, TX
The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (60.6°F).
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure
Pasadena, 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
Pasadena, TX
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.6mph - Average wind speed in March:
8.7mph - Average wind speed in April:
9.2mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.5mph - Average wind speed in November:
7.9mph - Average wind speed in December:
8.3mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are August and September (6.5mph).
Average humidity
Pasadena, TX
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall
Pasadena, TX
- Average rainfall in January:
2.17" - Average rainfall in February:
1.89" - Average rainfall in March:
2.09" - Average rainfall in April:
2.6" - Average rainfall in May:
4.96" - Average rainfall in June:
4.09"
- Average rainfall in July:
4.33" - Average rainfall in August:
5.43" - Average rainfall in September:
5.94" - Average rainfall in October:
3.46" - Average rainfall in November:
2.36" - Average rainfall in December:
2.6"
The wettest month (with the highest rainfall) is September (5.94").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days
Pasadena, TX
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
13 days - Average rainfall days in March:
14.8 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
15.2 days - Average rainfall days in June:
18.7 days
- Average rainfall days in July:
19.7 days - Average rainfall days in August:
21.3 days - Average rainfall days in September:
21.3 days - Average rainfall days in October:
13.6 days - Average rainfall days in November:
12.4 days - Average rainfall days in December:
13.8 days
The months with the highest number of rainy days are August and September (21.3 days).
The month with the least rainy days is January (12.3 days).
Average snowfall
Pasadena, TX
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Pasadena, TX
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.2 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 month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Pasadena, TX
- Average daylight in January:
10h and 3min - Average daylight in February:
11h and 1min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 4min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 5min - Average daylight in August:
13h and 1min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 4min - Average daylight in December:
10h and 2min
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 2min - Average sunshine in February:
5h and 5min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 4min - Average sunshine in May:
9h and 4min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days
Pasadena, TX
- Average sunshine days in January:
16.4 days - Average sunshine days in February:
11.9 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
7.4 days
- Average sunshine days in July:
8.6 days - Average sunshine days in August:
6.9 days - Average sunshine days in September:
6.9 days - Average sunshine days in October:
15.9 days - Average sunshine days in November:
15.1 days - Average sunshine days in December:
14.2 days
The month with the most sunshine days is January (16.4 days).
The months with the least sunshine days are August and September (6.9 days).
Average UV index
Pasadena, 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, February, November and December (UV index 4).
Average cloud cover
Pasadena, TX
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 27).
Average visibility
Pasadena, 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).
Pasadena, Texas, USA
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