Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
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). The temperature in Alton, Texas, lowers to an average of 68.2°F (20.1°C) during April nights.Heat index
In April, the heat index is calculated to be a torrid 98.6°F (37°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In April, the average relative humidity is 63%.Rainfall
In Alton, in April, during 5.8 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. In Alton, during the entire year, the rain falls for 68.7 days and collects up to 3.62" (92mm) of precipitation.Snowfall
In Alton, snow does not fall in March through December.Daylight
The average length of the day in April in Alton, Texas, is 12h and 48min.On the first day of April in Alton, sunrise is at 7:23 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 8:04 pm CDT.
Sunshine
The average sunshine in April in Alton is 8.4h.UV index
In Alton, the average daily maximum UV index in April is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In April, a daily maximum UV index of 7 leads to the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
How hot is April in Alton?
What is the average humidity in April in Alton?
How much does it rain in Alton in April?
When it does not snow in Alton?
What is the average length of the day in April in Alton?
When is the sunrise / sunset in April in Alton?
How long on average sun shines in April in Alton?
How high is the UV index in April in Alton?
Average temperature in April
Alton, TX
- Average high temperature in April: 88.7°F
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).
- Average low temperature in April: 68.2°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 in April
Alton, TX
- Average pressure in April: 29.89"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 in April
Alton, TX
- Average wind speed in April: 12.4mph
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 in April
Alton, TX
- Average humidity in April: 63%
The months with the highest relative humidity are May and December (67%).
The month with the lowest relative humidity is August (58%).
Average rainfall in April
Alton, TX
- Average rainfall in April: 0.16"
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 in April
Alton, TX
- Average rainfall days in April: 5.8 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 in April
Alton, TX
- Average snowfall days in April: 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 in April /
Average sunshine in April
Alton, TX
- Average daylight in April: 12h and 5min
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 April: 8h and 2min
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 in April
Alton, TX
- Average sunshine days in April: 22.9 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 in April
Alton, TX
- Average UV index in April: 7
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 in April
Alton, TX
- Average cloud cover in April: 33
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 in April
Alton, TX
- Average visibility in April: 6mi
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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