Climate and monthly weather forecastMertzon, TX
Climate and monthly weather forecast
Weather in January
January, the same as December, in Mertzon, Texas, is another refreshing winter month, with an average temperature varying between 39.6°F (4.2°C) and 58.6°F (14.8°C). Mertzon's temperatures tend to hit their minimum during January and December, with an average high-temperature of 58.6°F (14.8°C). Weather in January »Weather in February
February, the last month of the winter in Mertzon, is a refreshing month, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 63.1°F (17.3°C). The arrival of February denotes a barely perceptible change in the average high-temperatures to a comfortable 63.1°F (17.3°C) from January's 58.6°F (14.8°C). Weather in February »Weather in March
The first month of the spring, March, is an agreeable month in Mertzon, Texas, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 51.3°F (10.7°C). Mertzon, Texas, sees an increase in the average high-temperature with the arrival of March, moving from February's comfortable 63.1°F (17.3°C) to an agreeable 72.5°F (22.5°C). Weather in March »Weather in April
April in Mertzon, Texas, is a moderately hot spring month, with an average temperature fluctuating between 80.2°F (26.8°C) and 57.7°F (14.3°C). April signals a minor shift in the average high-temperature, moving from March's pleasant 72.5°F (22.5°C) to a warm 80.2°F (26.8°C). Weather in April »Weather in May
The last month of the spring, May, is a hot month in Mertzon, Texas, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 64.9°F (18.3°C). As April transitions into May, a subtle temperature shift is observed, with average highs adjusting from a warm 80.2°F (26.8°C) to a tropical 86.5°F (30.3°C). Weather in May »Weather in June
The first month of the summer, June, is still a tropical month in Mertzon, Texas, with an average temperature varying between 72.1°F (22.3°C) and 93.7°F (34.3°C). Mertzon's June weather indicates a minor ascent in high-temperatures, adjusting from 86.5°F (30.3°C) in May to a still tropical 93.7°F (34.3°C). Weather in June »Weather in July
July in Mertzon, Texas, is a sweltering summer month, with an average temperature fluctuating between 95.2°F (35.1°C) and 74.8°F (23.8°C). The advent of July brings an average high-temperature of a torrid 95.2°F (35.1°C), exhibiting minor difference from the previous month. Weather in July »Weather in August
The last month of the summer, August, is also a sweltering month in Mertzon, Texas, with an average temperature fluctuating between 95.5°F (35.3°C) and 75.4°F (24.1°C). August is the month when Mertzon experiences its warmest temperatures, averaging a high of 95.5°F (35.3°C) and a low of 75.4°F (24.1°C). The heat index for August is estimated at a blisteringly hot 104°F (40°C). Weather in August »Weather in September
The first month of the autumn, September, is also a hot month in Mertzon, Texas, with an average temperature ranging between min 69.3°F (20.7°C) and max 87.1°F (30.6°C). The beginning of September brings a minor change in the average high-temperature, shifting from a very hot 95.5°F (35.3°C) in August to a hot 87.1°F (30.6°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Mertzon, Texas, with an average temperature fluctuating between 58.6°F (14.8°C) and 77.7°F (25.4°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a hot 87.1°F (30.6°C) to a warm 77.7°F (25.4°C). Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Mertzon, Texas, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 66.9°F (19.4°C). November shows a mild decline in the average high-temperature, falling from October's warm 77.7°F (25.4°C) to an enjoyable 66.9°F (19.4°C). Weather in November »Weather in December
December, the first month of the winter in Mertzon, is also a moderate month, with an average temperature varying between 40.8°F (4.9°C) and 58.6°F (14.8°C). The coldest months are January and December, with an average high-temperature of 58.6°F (14.8°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Mertzon, TX
The warmest month (with the highest average high temperature) is August (95.5°F).
The months with the lowest average high temperature are January and December (58.6°F).
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure
Mertzon, TX
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.87"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed
Mertzon, TX
- Average wind speed in January:
10.8mph - Average wind speed in February:
11.9mph - Average wind speed in March:
12.9mph - Average wind speed in April:
13.7mph - Average wind speed in May:
13mph - Average wind speed in June:
12.2mph
- Average wind speed in July:
10.7mph - Average wind speed in August:
9.9mph - Average wind speed in September:
9.6mph - Average wind speed in October:
10.9mph - Average wind speed in November:
11.5mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is April (13.7mph).
The calmest month (with the lowest average wind speed) is September (9.6mph).
Average humidity
Mertzon, TX
The month with the highest relative humidity is November (58%).
The month with the lowest relative humidity is August (47%).
Average rainfall
Mertzon, TX
- Average rainfall in January:
0.59" - Average rainfall in February:
0.63" - Average rainfall in March:
1.22" - Average rainfall in April:
1.1" - Average rainfall in May:
2.17" - Average rainfall in June:
1.34"
- Average rainfall in July:
1.22" - Average rainfall in August:
1.61" - Average rainfall in September:
1.69" - Average rainfall in October:
2.36" - Average rainfall in November:
0.75" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is October (2.36").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Mertzon, TX
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
4.5 days - Average rainfall days in March:
7.4 days - Average rainfall days in April:
7.9 days - Average rainfall days in May:
12 days - Average rainfall days in June:
8.3 days
- Average rainfall days in July:
8.9 days - Average rainfall days in August:
8.8 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
7.3 days - Average rainfall days in November:
4.9 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is May (12 days).
The month with the least rainy days is January (3.8 days).
Average snowfall
Mertzon, TX
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Mertzon, TX
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
1.1 days - Average snowfall days in March:
0.3 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:
0.1 days - Average snowfall days in December:
0.4 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Mertzon, TX
- Average daylight in January:
10h and 24min - Average daylight in February:
11h and 6min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 48min - Average daylight in June:
14h and 6min
- Average daylight in July:
13h and 54min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 36min - Average daylight in December:
10h and 12min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in January:
7h and 54min - Average sunshine in February:
8h and 24min - Average sunshine in March:
8h and 18min - Average sunshine in April:
8h and 54min - Average sunshine in May:
10h and 18min - Average sunshine in June:
11h and 18min
- Average sunshine in July:
11h and 24min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 54min - Average sunshine in October:
8h and 12min - Average sunshine in November:
6h and 30min - Average sunshine in December:
6h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days
Mertzon, TX
- Average sunshine days in January:
25.8 days - Average sunshine days in February:
21.8 days - Average sunshine days in March:
22 days - Average sunshine days in April:
20.6 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
19.3 days
- Average sunshine days in July:
19.7 days - Average sunshine days in August:
19 days - Average sunshine days in September:
17.6 days - Average sunshine days in October:
21.4 days - Average sunshine days in November:
23.5 days - Average sunshine days in December:
24 days
The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is May (16.3 days).
Average UV index
Mertzon, TX
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Mertzon, TX
The month with the most cloud cover is March (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility
Mertzon, 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).





