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Contents
- 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 days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another pleasant winter month in Alton, Texas, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 69.4°F (20.8°C). With average temperatures fluctuating between a high of 69.4°F (20.8°C) and a low of 53.2°F (11.8°C), January stands out as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Alton, is a moderately hot month, with an average temperature varying between 75.4°F (24.1°C) and 57.7°F (14.3°C). Alton, Texas, in February denotes a subtle temperature transition, adjusting from an average high of an agreeable 69.4°F (20.8°C) in January to a moderately hot 75.4°F (24.1°C). Weather in February »
Weather in March
The first month of the spring, March, is also a moderately hot month in Alton, Texas, with an average temperature varying between 63°F (17.2°C) and 82.2°F (27.9°C). Alton's March weather indicates a minor ascent in high-temperatures, adjusting from 75.4°F (24.1°C) in February to a still moderately hot 82.2°F (27.9°C). Weather in March »
Weather in April
April in Alton, Texas, is a hot spring month, with an average temperature varying between 68.2°F (20.1°C) and 88.7°F (31.5°C). April sees a marginal temperature increase, moving from a warm 82.2°F (27.9°C) in March to a hot 88.7°F (31.5°C). Weather in April »
Weather in May
May, the last month of the spring in Alton, is another hot month, with an average temperature varying between 92.5°F (33.6°C) and 72.9°F (22.7°C). The arrival of May is marked by an average high-temperature of a still tropical 92.5°F (33.6°C), bearing a close resemblance to April. Weather in May »
Weather in June
The first month of the summer, June, is a sweltering month in Alton, Texas, with an average temperature varying between 95.7°F (35.4°C) and 76.8°F (24.9°C). With the onset of June, the average high-temperature registers at a fiery hot 95.7°F (35.4°C), subtly different from May's 92.5°F (33.6°C). Weather in June »
Weather in July
July, like June, in Alton, Texas, is another sweltering summer month, with an average temperature fluctuating between 77.7°F (25.4°C) and 98.1°F (36.7°C). Alton marks the onset of July with an average high-temperature of a still sweltering 98.1°F (36.7°C), a subtle shift from June's 95.7°F (35.4°C). Weather in July »
Weather in August
August, the last month of the summer in Alton, is another very hot month, with temperature in the range of an average high of 99°F (37.2°C) and an average low of 79.9°F (26.6°C). August, on average, is the warmest month, registering a high temperature of 99°F (37.2°C) and a low of 79.9°F (26.6°C). In August, the average heat index is calculated to be a blazing hot 123.8°F (51°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a hot month in Alton, Texas, with an average temperature fluctuating between 92.7°F (33.7°C) and 77.2°F (25.1°C). With the onset of September, the average high-temperature subtly recedes from August's very hot 99°F (37.2°C) to a tropical 92.7°F (33.7°C). Weather in September »
Weather in October
October, the same as September, in Alton, Texas, is another tropical autumn month, with temperature in the range of an average high of 87.3°F (30.7°C) and an average low of 70.7°F (21.5°C). With October's onset, the weather reveals a slight temperature decrease, transitioning from a tropical 92.7°F (33.7°C) in September to a still hot 87.3°F (30.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Alton, is another warm month, with temperature in the range of an average high of 77.4°F (25.2°C) and an average low of 61.3°F (16.3°C). Observing a mild shift, the average high-temperature during November reduces from October's hot 87.3°F (30.7°C) to a moderately hot 77.4°F (25.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also an agreeable month in Alton, Texas, with an average temperature varying between 71.2°F (21.8°C) and 55.9°F (13.3°C). Transition into December subtly marks a drop in the average high-temperature, moderately moving from a warm 77.4°F (25.2°C) in November to an agreeable 71.2°F (21.8°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
What part of the year is the coldest in Alton?
January stands out as Alton's coldest month, with an average high-temperature of 69.4°F (20.8°C) and a low-temperature of 53.2°F (11.8°C).
How many days does it rain in Alton?
Throughout the year, in Alton, there are 68.7 rainfall days, and 3.62" (92mm) of precipitation is accumulated.
When does it snow in Alton?
January and February are months with snowfall in Alton, Texas.
What is the snowiest month in Alton?
The months with the most snowfall days in Alton, Texas, are January and February, with an average of 0.1 snowfall days.
How many days does it snow in Alton?
In Alton, during the entire year, snow falls for 0.2 days.
What is the driest month in Alton?
February and December are months with the least rain in Alton, Texas, when the rain falls for 2.9 days and typically aggregates up to 0.12" (3mm) of rain.
When it does not snow in Alton?
March through December are months without snowfall.
When is Daylight Saving Time (DST) in Alton?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Alton, 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.
What is the most humid month in Alton?
May and December, with an average relative humidity of 67%, are most humid months in Alton.
When are the longest days in Alton?
June has the longest days of the year in Alton, Texas, with an average of 13h and 48min of daylight.
What is the wettest month in Alton?
July is the month with the most rainfall. Rain falls for 5.6 days and accumulates 0.71" (18mm) of precipitation.
What month has the most sunshine in Alton?
With an average of 11.4h of sunshine, July has the most sunshine of the year in Alton.
What are the months with the highest UV index in Alton?
July and August, with an average maximum UV index of 8, are months with the highest UV index in Alton.
What is the hottest time of year in Alton?
August is the warmest month of the year in Alton, registering average temperatures as high as 99°F (37.2°C) and as low as 79.9°F (26.6°C).
What is the least humid month in Alton?
August is the least humid month in Alton, Texas, with an average relative humidity of 58%.
What is the month with the shortest days in Alton?
December has the shortest days of the year, with an average of 10h and 30min of daylight.
What is the month with the least sunshine in Alton?
With an average of 5.6h of sunshine, December has the least sunshine of the year.
When is the lowest UV index in Alton?
With an average maximum UV index of 4, December is the month with the lowest UV index.
Average temperature
Alton, TX
The warmest month (with the highest average high temperature) is August (99°F).
The month with the lowest average high temperature is January (69.4°F).
The month with the highest average low temperature is August (79.9°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure
Alton, TX
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
29.98"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:
29.92"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.91"Hg - Average pressure in October:
29.96"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed
Alton, TX
- Average wind speed in January:
9.5mph - Average wind speed in February:
10.7mph - Average wind speed in March:
12.1mph - Average wind speed in April:
12.4mph - Average wind speed in May:
12.9mph - Average wind speed in June:
11.8mph
- Average wind speed in July:
12.9mph - Average wind speed in August:
11.4mph - Average wind speed in September:
9.3mph - Average wind speed in October:
9.6mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.5mph
The windiest months (with the highest average wind speed) are May and July (12.9mph).
The calmest month (with the lowest average wind speed) is September (9.3mph).
Average humidity
Alton, TX
The months with the highest relative humidity are May and December (67%).
The month with the lowest relative humidity is August (58%).
Average rainfall
Alton, TX
- Average rainfall in January:
0.16" - Average rainfall in February:
0.12" - Average rainfall in March:
0.16" - Average rainfall in April:
0.16" - Average rainfall in May:
0.35" - Average rainfall in June:
0.59"
- Average rainfall in July:
0.71" - Average rainfall in August:
0.24" - Average rainfall in September:
0.47" - Average rainfall in October:
0.31" - Average rainfall in November:
0.24" - Average rainfall in December:
0.12"
The wettest month (with the highest rainfall) is July (0.71").
The driest months (with the least rainfall) are February and December (0.12").
Average rainfall days
Alton, TX
- Average rainfall days in January:
4 days - Average rainfall days in February:
2.9 days - Average rainfall days in March:
5.7 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
6.2 days - Average rainfall days in June:
8.2 days
- Average rainfall days in July:
5.6 days - Average rainfall days in August:
5.3 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
5.6 days - Average rainfall days in November:
4.7 days - Average rainfall days in December:
3.4 days
The month with the highest number of rainy days is September (11.3 days).
The month with the least rainy days is February (2.9 days).
Average snowfall days
Alton, TX
- Average snowfall days in January:
0.1 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 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Alton, TX
- Average daylight in January:
10h and 4min - Average daylight in February:
11h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 2min - Average daylight in June:
13h and 5min
- Average daylight in July:
13h and 4min - Average daylight in August:
13h and 0min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 3min - Average daylight in November:
10h and 5min - Average daylight in December:
10h and 3min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in January:
7h and 0min - Average sunshine in February:
7h and 4min - Average sunshine in March:
7h and 5min - Average sunshine in April:
8h and 2min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 1min
- Average sunshine in July:
11h and 2min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
8h and 0min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
Alton, TX
- Average sunshine days in January:
24.6 days - Average sunshine days in February:
22.8 days - Average sunshine days in March:
24.9 days - Average sunshine days in April:
22.9 days - Average sunshine days in May:
23.5 days - Average sunshine days in June:
19.4 days
- Average sunshine days in July:
24.6 days - Average sunshine days in August:
24.5 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
23.7 days - Average sunshine days in November:
23.2 days - Average sunshine days in December:
24.3 days
The month with the most sunshine days is March (24.9 days).
The month with the least sunshine days is September (15.6 days).
Average UV index
Alton, TX
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover
Alton, TX
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility
Alton, 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).
Alton, Texas, USA
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