Climate and monthly weather forecastWestlake, TX
Climate and monthly weather forecast
Weather in January
January, like December, in Westlake, Texas, is another fresh winter month, with an average temperature ranging between min 38.8°F (3.8°C) and max 54.5°F (12.5°C). January is the month when Westlake sees the lowest average temperatures, with a high of 54.5°F (12.5°C) and a low of 38.8°F (3.8°C). Weather in January »Weather in February
The last month of the winter, February, is a mild month in Westlake, Texas, with an average temperature varying between 41.9°F (5.5°C) and 57.7°F (14.3°C). Westlake's shift into February is marked by a subtle change to a refreshing 57.7°F (14.3°C) from January's 54.5°F (12.5°C) in temperature. Weather in February »Weather in March
March, the first month of the spring in Westlake, is a comfortable month, with an average temperature fluctuating between 67.1°F (19.5°C) and 50°F (10°C). As March sets, the average high-temperature shows an increase, moving up from a refreshing 57.7°F (14.3°C) in February to an enjoyable 67.1°F (19.5°C). Weather in March »Weather in April
April in Westlake, Texas, is a moderately hot spring month, with an average temperature ranging between max 74.8°F (23.8°C) and min 56.1°F (13.4°C). With the onset of April, Westlake observes a minor temperature ascent, with the average high-temperature adjusting from March's comfortable 67.1°F (19.5°C) to a warm 74.8°F (23.8°C). Weather in April »Weather in May
May, the last month of the spring in Westlake, is also a moderately hot month, with an average temperature fluctuating between 64.4°F (18°C) and 82.2°F (27.9°C). Westlake perceives a slight temperature ascent during May, with average high-temperatures adjusting from a moderately hot 74.8°F (23.8°C) in April to a still warm 82.2°F (27.9°C). Weather in May »Weather in June
The first month of the summer, June, is a tropical month in Westlake, Texas, with an average temperature varying between 91°F (32.8°C) and 73.9°F (23.3°C). June witnesses a minor rise in the average high-temperature, transitioning from a moderately hot 82.2°F (27.9°C) in May to a hot 91°F (32.8°C). Weather in June »Weather in July
July is a sweltering summer month in Westlake, Texas, with an average temperature ranging between min 76.6°F (24.8°C) and max 95.2°F (35.1°C). July's weather displays an average high-temperature of a torrid 95.2°F (35.1°C), slightly varied from June's 91°F (32.8°C). Weather in July »Weather in August
August, the last month of the summer in Westlake, is also a sweltering month, with an average temperature ranging between max 96.3°F (35.7°C) and min 76.6°F (24.8°C). The average temperatures reach their apex in August, averaging 96.3°F (35.7°C) at the high end and 76.6°F (24.8°C) at the low end. The average heat index in August is computed to be a blisteringly hot 111.2°F (44°C). Weather in August »Weather in September
The first month of the autumn, September, is also a hot month in Westlake, Texas, with temperature in the range of an average low of 70.3°F (21.3°C) and an average high of 87.8°F (31°C). A modest decline in the average high-temperature is seen during September, decreasing from a very hot 96.3°F (35.7°C) in August to a tropical 87.8°F (31°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Westlake, Texas, with an average temperature fluctuating between 58.6°F (14.8°C) and 76.1°F (24.5°C). October shows a mild decline in the average high-temperature, falling from September's tropical 87.8°F (31°C) to a warm 76.1°F (24.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another refreshing month in Westlake, Texas, with an average temperature varying between 64.6°F (18.1°C) and 48.7°F (9.3°C). The start of November involves a temperature drop, moving from a moderately hot 76.1°F (24.5°C) in October to an enjoyable 64.6°F (18.1°C). Weather in November »Weather in December
December, the first month of the winter in Westlake, is still a refreshing month, with an average temperature ranging between min 41.2°F (5.1°C) and max 55.4°F (13°C). The arrival of December corresponds with a temperature reduction, down from November's comfortable 64.6°F (18.1°C) to a mild 55.4°F (13°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Westlake, TX
The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (54.5°F).
The months with the highest average low temperature are July and August (76.6°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure
Westlake, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Westlake, TX
- Average wind speed in January:
9.2mph - Average wind speed in February:
9.8mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.2mph - Average wind speed in May:
9.2mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.8mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity
Westlake, TX
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).
Average rainfall
Westlake, TX
- Average rainfall in January:
1.1" - Average rainfall in February:
1.26" - Average rainfall in March:
2.28" - Average rainfall in April:
1.97" - Average rainfall in May:
3.5" - Average rainfall in June:
2.44"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.97" - Average rainfall in September:
2.09" - Average rainfall in October:
3.19" - Average rainfall in November:
1.61" - Average rainfall in December:
1.22"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days
Westlake, TX
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
7.4 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
11.8 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
12.1 days
- Average rainfall days in July:
11.7 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7 days - Average rainfall days in December:
6.6 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (5.6 days).
Average snowfall
Westlake, TX
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Westlake, TX
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
0.8 days - Average snowfall days in March:
0.2 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:
0.2 days - Average snowfall days in December:
0.5 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Westlake, TX
- Average daylight in January:
10h and 18min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
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).
- Average sunshine in January:
6h and 0min - Average sunshine in February:
6h and 54min - Average sunshine in March:
7h and 6min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 54min - Average sunshine in September:
8h and 24min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
Westlake, TX
- Average sunshine days in January:
24.6 days - Average sunshine days in February:
18.5 days - Average sunshine days in March:
17.2 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
16.1 days
- Average sunshine days in July:
17.4 days - Average sunshine days in August:
17.7 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
21.4 days - Average sunshine days in December:
22.8 days
The month with the most sunshine days is January (24.6 days).
The month with the least sunshine days is May (13.8 days).
Average UV index
Westlake, 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).
Average cloud cover
Westlake, TX
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
Westlake, 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).





