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International Boundary Marker, TX Weather Forecast

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International Boundary Marker, TX Weather Forecast

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Partly Cloudy

96°F

Updated	7:17 pm
Feels Like	94°F
Humidity	30%
Wind	NE 6 mph
Barometer	29.96 in
Dew Point	60°F

Partly Cloudy

36°C

Updated	7:17 pm
Feels Like	34°C
Humidity	30%
Wind	NE 10 km/h
Barometer	101.5 kPa
Dew Point	16°C

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Cloud Cover	0%
uv UV Index	10
Sunrise	6:49 AM
Sunset	7:44 PM
Moonrise	8:31 PM
Moonset	8:11 AM

Civil Twilight
6:23 AM to 6:48 AM
7:42 PM to 8:07 PM
International Boundary Marker TX Weather - Waning Gibbous Moon

Waning Gibbous Moon

International Boundary Marker Weather Forecast

TONIGHT	SUNDAY	SUNDAY NIGHT	MONDAY	MONDAY NIGHT	TUESDAY	TUESDAY NIGHT	WEDNESDAY	WEDNESDAY NIGHT	THURSDAY	THURSDAY NIGHT	FRIDAY

Mostly Clear	Mostly Sunny	Mostly Clear	Mostly Sunny	Mostly Clear	Partly Cloudy	Partly Cloudy	Mostly Sunny	Mostly Clear	Mostly Sunny	Mostly Clear	Mostly Sunny
Lo: 75°FLo: 24°C	Hi: 100°FHi: 38°C	Lo: 75°FLo: 24°C	Hi: 100°FHi: 38°C	Lo: 75°FLo: 24°C	Hi: 99°FHi: 37°C	Lo: 75°FLo: 24°C	Hi: 99°FHi: 37°C	Lo: 75°FLo: 24°C	Hi: 99°FHi: 37°C	Lo: 75°FLo: 24°C	Hi: 100°FHi: 38°C

POP = Probability of Precipitation.

Weather Outlook Updated: 627 PM CDT Sat Aug 29 2026 International Boundary Marker, TX Weather - WeatherWorld.com

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Meteorlogic Glosserator
Instant definitions for any meteorological term.

Issued: 617 PM CDT Sat Aug 29 2026

Key Messages

Issued at 150 PM CDT Sat Aug 29 2026

Low to very low rain chances are expected in most locations through the next week. Significant wetting rains are not expected.
The best rain chances, relatively speaking, should remain south of Interstate 20 as a tropical disturbance moves west along the Gulf Coast and eventually inland later in the week.
Heat index values should remain below advisory criteria for Sunday, but increasing dewpoints will mean higher heat index values. Heat headlines ...

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Weather 101: Term of the Day

Barotropic System

A weather system in which temperature and pressure surfaces are coincident, i.e., temperature is uniform (no temperature gradient) on a constant pressure surface. Barotropic systems are characterized by a lack of wind shear, and thus are generally unfavorable areas for severe thunderstorm development. See baroclinic zone. Usually, in operational meteorology, references to barotropic systems refer to equivalent barotropic systems - systems in which temperature gradients exist, but are parallel to height gradients on a constant pressure surface. In such systems, height contours and isotherms are parallel everywhere, and winds do not change direction with height. As a rule, a true equivalent barotropic system can never be achieved in the real atmosphere. While some systems (such as closed lows or cutoff lows) may reach a state that is close to equivalent barotropic, the term barotropic system usually is used in a relative sense to describe systems that are really only close to being equivalent barotropic, i.e., isotherms and height contours are nearly parallel everywhere and directional wind shear is weak.