Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
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.Humidity
In Alton, the average relative humidity in January is 64%.Rainfall
In January, the rain falls for 4 days. Throughout January, 0.16" (4mm) of precipitation is accumulated. Throughout the year, there are 68.7 rainfall days, and 3.62" (92mm) of precipitation is accumulated.Snowfall
January and February are months with snowfall. The months with the most snowfall days in Alton are January and February, with an average of 0.1 snowfall days.Daylight
In January, the average length of the day in Alton is 10h and 43min.On the first day of the month, sunrise is at 7:20 am and sunset at 5:52 pm. On the last day of January, in Alton, sunrise is at 7:18 am and sunset at 6:15 pm CST.
Sunshine
The average sunshine in January is 7h.UV index
In Alton, the average daily maximum UV index in January is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the maximum UV index of 5 transforms into these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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?
What are January temperatures in Alton?
What is the average humidity in January in Alton?
How many days does it rain in January in Alton?
What is the snowiest month in Alton?
When does it start to snow in Alton?
How many hours of daylight does Alton have in January?
When are sunrise and sunset in January in Alton?
How many hours of sunshine does Alton have in January?
What is the UV index reading in January in Alton?
Average temperature in January
Alton, TX
- Average high temperature in January: 69.4°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 January: 53.2°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 January
Alton, TX
- Average pressure in January: 30.12"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 January
Alton, TX
- Average wind speed in January: 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 in January
Alton, TX
- Average humidity in January: 64%
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 January
Alton, TX
- Average rainfall in January: 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 January
Alton, TX
- Average rainfall days in January: 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 in January
Alton, TX
- Average snowfall days in January: 0.1 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 January /
Average sunshine in January
Alton, TX
- Average daylight in January: 10h and 4min
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
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 January
Alton, TX
- Average sunshine days in January: 24.6 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 January
Alton, TX
- Average UV index in January: 5
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 January
Alton, TX
- Average cloud cover in January: 36
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 January
Alton, TX
- Average visibility in January: 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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