Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Castroville Municipal Airport (KCVB)

Lat: 29.34°NLon: 98.85°WElev: 771ft.

Fair

50°F

10°C

Humidity 71%
Wind Speed NE 3 mph
Barometer 30.31 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 20 Jan 1:15 am CST
Extended Forecast for

7 Miles SSW Helotes TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. North northeast wind 5 to 10 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 60. North northeast wind around 10 mph becoming east southeast in the afternoon.

    High: 60 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers before midnight, then a chance of showers after 3am.  Patchy fog after 1am.  Otherwise, cloudy, with a low around 51. East wind around 5 mph.  Chance of precipitation is 30%.

    Low: 51 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 7am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 69. East southeast wind around 5 mph becoming southwest in the afternoon.

    High: 69 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. Calm wind becoming northeast around 5 mph after midnight.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73. Northeast wind around 5 mph becoming south southeast in the afternoon.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 56. East southeast wind around 5 mph.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after noon.  Cloudy, with a high near 69. East southeast wind 5 to 10 mph.

    High: 69 °F

    Cloudy then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely.  Cloudy, with a low around 40. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. North northeast wind 5 to 10 mph.
Tuesday
Mostly cloudy, with a high near 60. North northeast wind around 10 mph becoming east southeast in the afternoon.
Tuesday Night
A slight chance of showers before midnight, then a chance of showers after 3am. Patchy fog after 1am. Otherwise, cloudy, with a low around 51. East wind around 5 mph. Chance of precipitation is 30%.
Wednesday
Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 69. East southeast wind around 5 mph becoming southwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 50. Calm wind becoming northeast around 5 mph after midnight.
Thursday
Partly sunny, with a high near 73. Northeast wind around 5 mph becoming south southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 56. East southeast wind around 5 mph.
Friday
A 30 percent chance of showers after noon. Cloudy, with a high near 69. East southeast wind 5 to 10 mph.
Friday Night
Showers likely. Cloudy, with a low around 40. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday
Showers likely, mainly before noon. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Saturday Night
A chance of rain or freezing rain. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Helotes TX
 29.48°N 98.74°W (Elev. 997 ft)
12:48 am CST Jan 20, 2026
1am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database