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
The lowest temperatures are recorded in January, with averages reaching a high of 66.9°F (19.4°C) and a low of 50.2°F (10.1°C).Humidity
In January, the average relative humidity is 58%.Rainfall
In January, the rain falls for 6.2 days. Throughout January, 0.47" (12mm) of precipitation is accumulated. In Islitas, during the entire year, the rain falls for 91.9 days and collects up to 10.55" (268mm) of precipitation.Snowfall
January, February and December are months with snowfall. The month with the most snowfall days is January, when snow falls for 0.2 days.Daylight
The average length of the day in January is 10h and 38min.On the first day of January, sunrise is at 7:29 am and sunset at 5:54 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 6:18 pm CST.
Sunshine
In Islitas, the average sunshine in January is 7.2h.UV index
January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during January translates into the following guidance:
Put precautions into practice - Guidance to elude sunburn is provided. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
What is the average January temperature?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most in Islitas?
How many days does it snow in January?
How many hours of daylight does Islitas have in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Islitas, TX
- Average high temperature in January: 66.9°F
The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (66.9°F).
- Average low temperature in January: 50.2°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 (50.2°F).
Average pressure in January
Islitas, TX
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.86"Hg).
Average wind speed in January
Islitas, TX
- Average wind speed in January: 9.1mph
The windiest month (with the highest average wind speed) is July (13.5mph).
The calmest month (with the lowest average wind speed) is December (8.9mph).
Average humidity in January
Islitas, TX
- Average humidity in January: 58%
The month with the highest relative humidity is December (62%).
The month with the lowest relative humidity is August (49%).
Average rainfall in January
Islitas, TX
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is September (2.17").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in January
Islitas, TX
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is September (12.9 days).
The month with the least rainy days is November (5.5 days).
Average snowfall days in January
Islitas, TX
- Average snowfall days in January: 0.2 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Islitas, TX
- Average daylight in January: 10h and 4min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in January: 7h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Islitas, TX
- Average sunshine days in January: 23.3 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is September (15.1 days).
Average UV index in January
Islitas, TX
- Average UV index in January: 4
The months with the highest UV index are July and August (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in January
Islitas, TX
- Average cloud cover in January: 33
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in January
Islitas, 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).
Islitas, Texas, USA
Weather forecast for your location
2. Allow the app to use your location