Climate and monthly weather forecastHigh Island, TX
Climate and monthly weather forecast
Weather in January
January, like December, is another refreshing winter month in High Island, Texas, with an average temperature varying between 59.5°F (15.3°C) and 46.9°F (8.3°C). High Island's January weather reaches an average high of 59.5°F (15.3°C) and an average low of 46.9°F (8.3°C), making it the coldest month. Weather in January »Weather in February
February, the last month of the winter in High Island, is a comfortable month, with an average temperature varying between 51.3°F (10.7°C) and 63.1°F (17.3°C). The advent of February brings an average high-temperature of a still refreshing 63.1°F (17.3°C), exhibiting minor difference from the previous month. Weather in February »Weather in March
The first month of the spring, March, is an agreeable month in High Island, Texas, with an average temperature varying between 69.8°F (21°C) and 57.4°F (14.1°C). March witnesses a subtle temperature ascent, adjusting from an enjoyable 63.1°F (17.3°C) in February to an agreeable 69.8°F (21°C). Weather in March »Weather in April
April is a warm spring month in High Island, Texas, with an average temperature ranging between min 62.8°F (17.1°C) and max 76.1°F (24.5°C). The arrival of April introduces a minor uplift in high-temperatures, adjusting from a pleasant 69.8°F (21°C) in March to a moderately hot 76.1°F (24.5°C). Weather in April »Weather in May
The last month of the spring, May, is also a moderately hot month in High Island, Texas, with an average temperature fluctuating between 82.9°F (28.3°C) and 70.5°F (21.4°C). May's arrival coincides with a subtle temperature rise, moving from April's 76.1°F (24.5°C) to a still warm 82.9°F (28.3°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in High Island, Texas, with an average temperature varying between 88.3°F (31.3°C) and 76.1°F (24.5°C). June brings a slight elevation in the average high-temperature, transitioning from May's warm 82.9°F (28.3°C) to a hot 88.3°F (31.3°C). Weather in June »Weather in July
July, the same as June, in High Island, Texas, is another tropical summer month, with an average temperature ranging between max 90.1°F (32.3°C) and min 77.9°F (25.5°C). July's onset records an average high-temperature of a still tropical 90.1°F (32.3°C), a near match to June's 88.3°F (31.3°C). Weather in July »Weather in August
August, the last month of the summer in High Island, is also a hot month, with an average temperature varying between 91°F (32.8°C) and 77.5°F (25.3°C). In High Island, the month of August is known for its highest average temperatures, reaching a high of 91°F (32.8°C) and a low of 77.5°F (25.3°C). The average heat index in August is evaluated at a blazing hot 113°F (45°C). Weather in August »Weather in September
The first month of the autumn, September, is still a tropical month in High Island, Texas, with an average temperature varying between 86.4°F (30.2°C) and 73.8°F (23.2°C). During September, High Island observes a subtle ascent to a still hot 86.4°F (30.2°C) from August's 91°F (32.8°C) in the average high-temperature. Weather in September »Weather in October
October, the same as September, is another warm autumn month in High Island, Texas, with an average temperature fluctuating between 79.5°F (26.4°C) and 65.1°F (18.4°C). The beginning of October subtly marks a decrease in the average high-temperature, transitioning from a hot 86.4°F (30.2°C) in September to a warm 79.5°F (26.4°C). Weather in October »Weather in November
November, the last month of the autumn in High Island, is another pleasant month, with an average temperature fluctuating between 55.8°F (13.2°C) and 69.1°F (20.6°C). November's arrival corresponds with a decrease in average high-temperatures, from October's moderately hot 79.5°F (26.4°C) to an agreeable 69.1°F (20.6°C). Weather in November »Weather in December
December, the first month of the winter in High Island, is also an enjoyable month, with an average temperature fluctuating between 62.1°F (16.7°C) and 50.4°F (10.2°C). In High Island, the average high-temperature in December slightly decreases from an agreeable 69.1°F (20.6°C) in November to a comfortable 62.1°F (16.7°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
High Island, 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 (77.9°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure
High Island, 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:
29.95"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
High Island, TX
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
9.5mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.6mph - Average wind speed in September:
6.6mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.4mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are August and September (6.6mph).
Average humidity
High Island, TX
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall
High Island, TX
- Average rainfall in January:
0.55" - Average rainfall in February:
0.43" - Average rainfall in March:
0.43" - Average rainfall in April:
0.59" - Average rainfall in May:
1.69" - Average rainfall in June:
1.61"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.97" - Average rainfall in September:
2.01" - Average rainfall in October:
1.22" - Average rainfall in November:
0.71" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is September (2.01").
The driest months (with the least rainfall) are February and March (0.43").
Average rainfall days
High Island, TX
- Average rainfall days in January:
7.4 days - Average rainfall days in February:
6.5 days - Average rainfall days in March:
9.4 days - Average rainfall days in April:
8.9 days - Average rainfall days in May:
9.4 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
16.9 days - Average rainfall days in September:
17.6 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is February (6.5 days).
Average snowfall
High Island, 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
High Island, TX
- Average snowfall days in January:
0.2 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:
0.1 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 (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, October and November (0 days).
Average daylight / Average sunshine
High Island, 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 36min - 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 42min - Average sunshine in March:
7h and 6min - Average sunshine in April:
8h and 54min - Average sunshine in May:
10h and 12min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 54min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 42min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days
High Island, TX
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
18.8 days - Average sunshine days in March:
20.1 days - Average sunshine days in April:
19.4 days - Average sunshine days in May:
19.3 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
9.3 days - Average sunshine days in September:
9.7 days - Average sunshine days in October:
18.3 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
18.9 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is August (9.3 days).
Average UV index
High Island, 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
High Island, TX
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
High Island, 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).





