San Isidro, TX Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for San Isidro, TX.

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Current Conditions — San Isidro, TX

HEBBRONVILLE (KHBV)

Clear

76.5 F
Humidity:99%
Wind Speed:SE 13.9 G 19.7 mph
Barometer:29.76 in
Dewpoint:76.3 F
Visibility:10.00 mi
Precip:--
Heat Index:78.4 F
Wind Chill:NA
Apr 27 2026, 01:15 AM CDT
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5-Day Forecast — San Isidro, TX

Monday

High 100 °F
Mostly Cloudy
Monday
Night
Low 75 °F
Partly Cloudy
Tuesday

High 100 °F
Partly Sunny
Tuesday
Night
Low 73 °F
Partly Cloudy
Wednesday

High 102 °F
Mostly Cloudy
Wednesday
Night
Low 73 °F
Mostly Cloudy
Thursday

High 96 °F
Mostly Cloudy
Thursday
Night
Low 73 °F
Mostly Cloudy
Friday

High 95 °F
Partly Sunny

Detailed Forecast — San Isidro, TX

Monday
Mostly Cloudy. High near 100°F. Wind 8 to 13 mph, with gusts as high as 23 mph.
Monday Night
Partly Cloudy. Low around 75°F. Wind 9 to 13 mph, with gusts as high as 24 mph.
Tuesday
Partly Sunny. High near 100°F. Wind 10 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Partly Cloudy. Low around 73°F. Wind 9 to 14 mph, with gusts as high as 25 mph.
Wednesday
Mostly Cloudy. High near 102°F. Wind 10 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly Cloudy. Low around 73°F. Wind around 6 mph, with gusts as high as 15 mph.
Thursday
Mostly Cloudy. High near 96°F. Wind 14 to 16 mph, with gusts as high as 28 mph.
Thursday Night
Mostly Cloudy. Low around 73°F. Wind around 12 mph, with gusts as high as 23 mph.
Friday
Partly Sunny. High near 95°F. Wind 14 to 15 mph, with gusts as high as 24 mph.
Friday Night
Chance of Thunderstorms. Low around 66°F. Wind around 9 mph, with gusts as high as 20 mph.
Saturday
Mostly Cloudy. High near 82°F. Wind 9 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Mostly Cloudy. Low around 62°F. Wind around 6 mph, with gusts as high as 15 mph.
Sunday
Partly Sunny. High near 82°F. Wind around 9 mph, with gusts as high as 15 mph.
TX Radar
Current Radar • TX
Day 1 Outlook • April 27, 2026

Observation History — San Isidro, TX

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:15 AM CDT SE 13.9 G 19.7 10.00 Clear -- 76.5 76.3 99% NA 78.4 29.76 1007.8
12:55 AM CDT 10.3 10.00 Clear -- 76.6 76.6 100% NA 78.6 29.78 1008.5
12:35 AM CDT SE 9.2 10.00 Clear -- 76.6 76.3 99% NA 78.6 29.78 1008.5
12:15 AM CDT 12.8 10.00 Clear -- 76.8 76.6 99% NA 78.8 29.78 1008.5
11:55 PM CDT SE 11.4 10.00 Clear -- 77.2 76.8 99% NA 79.2 29.77 1008.1
11:35 PM CDT 10.3 10.00 Clear -- 77.2 77.2 100% NA 79.3 29.77 1008.1
11:15 PM CDT SE 11.4 10.00 Clear -- 77.2 77.2 100% NA 79.3 29.78 1008.5
10:55 PM CDT SE 8.1 9.00 Clear -- 77.5 77.2 99% NA 79.7 29.77 1008.1
10:35 PM CDT 11.4 10.00 Clear -- 78.1 77.4 98% NA 80.8 29.76 1007.8
10:15 PM CDT 12.8 10.00 Clear -- 78.4 77.2 96% NA 81.9 29.77 1008.1
09:55 PM CDT 11.4 10.00 Clear -- 79.3 77.5 94% NA 84.4 29.76 1007.8
09:35 PM CDT 13.9 10.00 Clear -- 79.9 77.4 92% NA 85.6 29.75 1007.5
09:15 PM CDT 11.4 10.00 Clear -- 80.8 77.2 89% NA 87.6 29.74 1007.1
08:55 PM CDT E 10.3 10.00 Clear -- 81.3 77.4 88% NA 88.9 29.74 1007.1
08:35 PM CDT E 10.3 10.00 Clear -- 81.3 77.4 88% NA 88.9 29.73 1006.8
08:15 PM CDT E 13.9 10.00 Clear -- 82.0 77.5 86% NA 90.5 29.72 1006.4
07:55 PM CDT E 15.0 10.00 Clear -- 83.5 77.5 82% NA 93.4 29.71 1006.1
07:35 PM CDT E 12.8 10.00 Clear -- 84.4 77.7 80% NA 95.2 29.70 1005.8
07:15 PM CDT E 13.9 10.00 Clear -- 85.5 77.7 78% NA 97.2 29.69 1005.4
06:55 PM CDT E 10.3 10.00 Clear -- 86.9 77.4 73% NA 99.0 29.69 1005.4
06:35 PM CDT 12.8 10.00 Clear -- 88.2 76.5 68% NA 99.9 29.69 1005.4
06:15 PM CDT 8.1 10.00 Clear -- 88.2 76.3 68% NA 99.5 29.68 1005.1
05:55 PM CDT E 9.2 10.00 Clear -- 88.2 77.2 70% NA 100.8 29.68 1005.1
05:35 PM CDT 9.2 10.00 Clear -- 87.1 77.0 72% NA 98.8 29.68 1005.1

Regional Weather Observation

HEBBRONVILLE (KHBV)

Clear
76.5 F

FALFURRIAS (KBKS)

Cloudy
NULL F

EDINBURG INTL (KEBG)

Fog/Mist
75.2 F

MCALLEN (KMFE)

Mostly Cloudy
78.8 F

ZAPATA (KAPY)

Cloudy
78.4 F

KINGSVILLE (KIKG)

Cloudy
77.9 F
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