Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
Alton reaches its highest average temperatures in July, measuring 89.4°F (31.9°C) at the peak and 68.5°F (20.3°C) at the lowest.Heat index
The heat index in July is appraised at an extremely hot 107.6°F (42°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In July, the average relative humidity is 75%.Rainfall
In Alton, in July, during 15.1 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. Throughout the year, there are 148 rainfall days, and 35.39" (899mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Alton, Missouri.Daylight
In Alton, the average length of the day in July is 14h and 23min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:28 pm. On the last day of July, in Alton, sunrise is at 6:11 am and sunset at 8:12 pm CDT.
Sunshine
In Alton, the average sunshine in July is 10.2h.UV index
In July, the average daily maximum UV index in Alton is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: In July, the maximum UV index of 6 transforms into these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What month is the hottest in Alton?
Is it hot in Alton during July?
What is the average humidity in July in Alton?
How much does it rain in Alton in July?
When it does not snow in Alton?
What is the average length of the day in July in Alton?
When are sunrise and sunset in July in Alton?
How long on average sun shines in July in Alton?
What is the UV index intensity in July in Alton?
Average temperature in July
Alton, MO
- Average high temperature in July: 89.4°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (43.3°F).
- Average low temperature in July: 68.5°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in July
Alton, MO
- Average pressure in July: 29.97"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 in July
Alton, MO
- Average wind speed in July: 5.3mph
The windiest months (with the highest average wind speed) are January, February, March and April (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in July
Alton, MO
- Average humidity in July: 75%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
Alton, MO
- Average rainfall in July: 3.15"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in July
Alton, MO
- Average rainfall days in July: 15.1 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in July
Alton, MO
- Average snowfall in July: 0"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Alton, MO
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Alton, MO
- Average daylight in July: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in July: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in July
Alton, MO
- Average sunshine days in July: 13.1 days
The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in July
Alton, MO
- Average UV index in July: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in July
Alton, MO
- Average cloud cover in July: 31
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in July
Alton, MO
- Average visibility in July: 5mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
Alton, Missouri, USA
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