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United StatesThe weather in January in San Antonio
It's pleasantly warm in January in San Antonio with an average temperature of 20°C. Temperatures this month range from a low of 13°C to a high of 24°C. At night, you can expect temperatures between 1°C and 11°C.
Looking for great weather? January is a good time to be in San Antonio. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for San Antonio, Texas. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Rainfall amount
In January, there is an average of 47 mm of precipitation, spread over 7 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in January for San Antonio
Click on any day in January to get detailed info about the usual weather on that day in San Antonio. Check out the historical temperatures and precipitation over the past 10 years on this day.
January weather comparison
| San Antonio | New York | |
|---|---|---|
| Average temperature | 20°C | 5°C |
| Max. temperature | 24°C | 11°C |
| Min. temperature | 1°C | -5°C |
| Total precipitation | 47 mm | 97 mm |
| Rainy days | 7 days | 12 days |
Start of January
The month of January starts in San Antonio with mild temps, averaging around 18°C during the day and nights around 6°C.
Mid January
By mid-January, daytime temps rise to around 21°C, with nights around 10°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of January
By the end of January, the average daytime temperature in San Antonio is around 21°C, while nighttime temps are about 7°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of San Antonio for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in January in San Antonio, Texas. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in January in San Antonio
Temperature in January in San Antonio over the years
Precipitation charts
These charts show the average amount of precipitation in January in San Antonio, Texas. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in January in San Antonio
Total precipitation in January in San Antonio over the years
Daily UV index in January in San Antonio
This chart shows the average daily UV index in January in San Antonio, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in January in San Antonio
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Average weather in San Antonio by month
Click on a month below to see detailed weather info for San Antonio. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.