Climate and monthly weather forecastPort Arthur, TX
Climate and monthly weather forecast
Weather in January
January, the same as December, in Port Arthur, Texas, is a moderate winter month, with an average temperature varying between 59.5°F (15.3°C) and 46.9°F (8.3°C). January is the coldest month, with an average high-temperature of 59.5°F (15.3°C) and an average low-temperature of 46.9°F (8.3°C). Weather in January »Weather in February
February, the last month of the winter in Port Arthur, is a comfortable month, with an average temperature varying between 51.4°F (10.8°C) and 63.1°F (17.3°C). The weather during February records an average high-temperature of a still refreshing 63.1°F (17.3°C), closely mirroring the preceding month. Weather in February »Weather in March
The first month of the spring, March, is an agreeable month in Port Arthur, Texas, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 57.6°F (14.2°C). A minor escalation in the average high-temperature is seen with the onset of March, moving from a comfortable 63.1°F (17.3°C) in February to a pleasant 70°F (21.1°C). Weather in March »Weather in April
April is a warm spring month in Port Arthur, Texas, with an average temperature ranging between min 63°F (17.2°C) and max 76.5°F (24.7°C). April showcases a minor temperature ascent, adjusting from March's pleasant 70°F (21.1°C) to a warm 76.5°F (24.7°C). Weather in April »Weather in May
The last month of the spring, May, is another warm month in Port Arthur, Texas, with an average temperature fluctuating between 83.3°F (28.5°C) and 71.1°F (21.7°C). Port Arthur, Texas, in May observes a minor temperature shift, with average high-temperatures adjusting from 76.5°F (24.7°C) in April to a still moderately hot 83.3°F (28.5°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in Port Arthur, Texas, with an average temperature varying between 76.6°F (24.8°C) and 88.9°F (31.6°C). The coming of June brings a minor shift in Port Arthur's weather, with average high-temperatures adjusting from May's moderately hot 83.3°F (28.5°C) to a hot 88.9°F (31.6°C). Weather in June »Weather in July
July, like June, is a hot summer month in Port Arthur, Texas, with an average temperature varying between 90.7°F (32.6°C) and 78.4°F (25.8°C). Port Arthur, Texas, experiences a recorded average high-temperature of a still hot 90.7°F (32.6°C) in July, closely aligned with June's 88.9°F (31.6°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Port Arthur, Texas, with temperature in the range of an average high of 91°F (32.8°C) and an average low of 78.3°F (25.7°C). August, known for its average high temperature of 91°F (32.8°C) and an average low temperature of 78.3°F (25.7°C), is the warmest month. The heat index value during August is calculated to be a blazing hot 113°F (45°C). Weather in August »Weather in September
September, the first month of the autumn in Port Arthur, is still a hot month, with an average temperature fluctuating between 86.9°F (30.5°C) and 74.1°F (23.4°C). Port Arthur experiences an average high-temperature of a still hot 86.9°F (30.5°C) with the onset of September, subtly varied from August's 91°F (32.8°C). Weather in September »Weather in October
October, like September, in Port Arthur, Texas, is a moderately hot autumn month, with an average temperature fluctuating between 79.7°F (26.5°C) and 64.9°F (18.3°C). With October's onset, the weather reveals a slight temperature decrease, transitioning from a hot 86.9°F (30.5°C) in September to a warm 79.7°F (26.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also an agreeable month in Port Arthur, Texas, with an average temperature ranging between min 55.6°F (13.1°C) and max 68.9°F (20.5°C). The transition into November indicates a reduction in the average high-temperature, down to a pleasant 68.9°F (20.5°C) from October's moderately hot 79.7°F (26.5°C). Weather in November »Weather in December
The first month of the winter, December, is still a refreshing month in Port Arthur, Texas, with an average temperature varying between 61.9°F (16.6°C) and 50.2°F (10.1°C). The transition into December subtly indicates a reduction in the average high-temperature, down to a refreshing 61.9°F (16.6°C) from November's agreeable 68.9°F (20.5°C). Weather in December »Updated: Feb 14, 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
In Port Arthur, January is known for its average lowest temperatures, reaching a high of 59.5°F (15.3°C) and a low of 46.9°F (8.3°C).
Throughout the year, there are 132.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.
In Port Arthur, snow does not fall in January through November.
Throughout the year, in Port Arthur, Texas, there are 0.5 snowfall days, and 0.04" (1mm) of snow is accumulated.
February is the most humid month in Port Arthur, Texas, with an average relative humidity of 81%.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Port Arthur, Texas, 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.
April is the month with the least rainfall. Rain falls for 8 days and accumulates 0.43" (11mm) of precipitation.
The months with the highest UV index in Port Arthur, Texas, are May through August, with an average maximum UV index of 7.
The month with the longest days in Port Arthur is June, with an average of 14h and 0min of daylight.
August proves to be the warmest month in Port Arthur, Texas, recording an average peak temperature of 91°F (32.8°C) and a minimum temperature of 78.3°F (25.7°C).
The month with the most rainfall in Port Arthur is August, when the rain falls for 17.9 days and typically aggregates up to 2.09" (53mm) of precipitation.
August has the most sunshine of the year in Port Arthur, with an average of 10.7h of sunshine.
The least humid month is October, with an average relative humidity of 71%.
December is the only month when snow falls.
The month with the most snowfall is December, when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.
With an average of 10h and 18min of daylight, December has the shortest days of the year in Port Arthur, Texas.
With an average of 5h of sunshine, December has the least sunshine of the year.
December is the month with the lowest UV index in Port Arthur, Texas, with an average maximum UV index of 3.
Average temperature
Port Arthur, TX
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (59.5°F).
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure
Port Arthur, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.06"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:
29.94"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
Port Arthur, TX
- Average wind speed in January:
8.9mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.3mph - Average wind speed in April:
10.1mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.8mph - Average wind speed in December:
8.9mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity
Port Arthur, TX
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Port Arthur, TX
- Average rainfall in January:
0.67" - Average rainfall in February:
0.47" - Average rainfall in March:
0.47" - Average rainfall in April:
0.43" - Average rainfall in May:
1.06" - Average rainfall in June:
1.26"
- Average rainfall in July:
1.54" - Average rainfall in August:
2.09" - Average rainfall in September:
1.54" - Average rainfall in October:
1.14" - Average rainfall in November:
0.71" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is April (0.43").
Average rainfall days
Port Arthur, TX
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8 days - Average rainfall days in March:
9.6 days - Average rainfall days in April:
8 days - Average rainfall days in May:
8.3 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
17.9 days - Average rainfall days in September:
16.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
8.7 days
The month with the highest number of rainy days is August (17.9 days).
The months with the least rainy days are January and November (7.8 days).
Average snowfall
Port Arthur, TX
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Port Arthur, TX
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.1 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
Port Arthur, 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 24min - Average sunshine in February:
5h and 36min - Average sunshine in March:
7h and 6min - Average sunshine in April:
9h and 6min - Average sunshine in May:
10h and 18min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days
Port Arthur, TX
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
17.9 days - Average sunshine days in March:
19.9 days - Average sunshine days in April:
20.5 days - Average sunshine days in May:
20.8 days - Average sunshine days in June:
13.2 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
8.8 days - Average sunshine days in September:
10 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
20 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is August (8.8 days).
Average UV index
Port Arthur, 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
Port Arthur, TX
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 26).
Average visibility
Port Arthur, 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).
