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Current weather in Castroville is clear sky.

Where can I find the hourly weather forecast for Castroville?

This page shows hourly weather forecast for Castroville, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Castroville updated regularly?

Weather data for Castroville is updated regularly with the latest available observations and forecasts.

Now · 11:13 AM

Castroville Weather & Hourly Forecast

United States · Texas · 78009

89°F

Sunny

Feels like: 92°F

💧 Humidity 51% 🌡 Pressure 30.15 inHg 💨 Wind 7 mph 👁 Visibility 28.3 mi ☁ Clouds 2% ☀️ UV index 4.8 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Castroville

Today

12:00 PM

Sunny

93° 💧 None 💨 7 mph H 41%30.15 inHg

3:00 PM

Strong thunderstorm

98° 💧 0.002 in 💨 8 mph H 32%30.09 inHg

6:00 PM

Mostly sunny

95° 💧 0.002 in 💨 9 mph H 37%30.03 inHg

9:00 PM

Mostly clear night

88° 💧 None 💨 11 mph H 51%30.09 inHg

Tomorrow

12:00 AM

Partly cloudy night

84° 💧 None 💨 6 mph H 63%30.12 inHg

3:00 AM

Mostly cloudy night

80° 💧 None 💨 7 mph H 76%30.15 inHg

6:00 AM

Clear night

78° 💧 None 💨 3 mph H 87%30.15 inHg

9:00 AM

Sunny

82° 💧 None 💨 5 mph H 74%30.15 inHg

12:00 PM

Sunny

92° 💧 None 💨 5 mph H 43%30.15 inHg

3:00 PM

Strong thunderstorm

97° 💧 0.028 in 💨 8 mph H 36%30.06 inHg

6:00 PM

Mostly cloudy

90° 💧 0.005 in 💨 10 mph H 52%30.03 inHg

9:00 PM

Overcast night

83° 💧 0.008 in 💨 9 mph H 67%30.12 inHg

Friday

12:00 AM

Overcast night

81° 💧 None 💨 7 mph H 75%30.12 inHg

3:00 AM

Mostly cloudy night

79° 💧 0.001 in 💨 5 mph H 82%30.12 inHg

6:00 AM

Mostly clear night

78° 💧 0.000 in 💨 5 mph H 88%30.09 inHg

9:00 AM

Mostly sunny

81° 💧 0.000 in 💨 6 mph H 78%30.12 inHg

Today

12:00 PM

Sunny

93° 💧 None 💨 7 mph H 41%30.15 inHg

1:00 PM

Sunny

95° 💧 None 💨 7 mph H 36%30.12 inHg

2:00 PM

Strong thunderstorm

97° 💧 None 💨 8 mph H 32%30.09 inHg

3:00 PM

Strong thunderstorm

98° 💧 None 💨 8 mph H 32%30.09 inHg

4:00 PM

Strong thunderstorm

97° 💧 0.000 in 💨 9 mph H 34%30.03 inHg

5:00 PM

Light thunderstorms

96° 💧 0.002 in 💨 10 mph H 35%30.03 inHg

6:00 PM

Mostly sunny

95° 💧 0.000 in 💨 9 mph H 37%30.03 inHg

7:00 PM

Strong thunderstorm

92° 💧 0.001 in 💨 12 mph H 41%30.03 inHg

8:00 PM

Mostly clear night

90° 💧 0.001 in 💨 10 mph H 44%30.06 inHg

9:00 PM

Mostly clear night

88° 💧 None 💨 11 mph H 51%30.09 inHg

10:00 PM

Mostly clear night

87° 💧 None 💨 10 mph H 55%30.12 inHg

11:00 PM

Clear night

85° 💧 None 💨 7 mph H 59%30.12 inHg

Tomorrow

12:00 AM

Partly cloudy night

84° 💧 None 💨 6 mph H 63%30.12 inHg

1:00 AM

Mostly clear night

83° 💧 None 💨 7 mph H 65%30.15 inHg

2:00 AM

Clear night

82° 💧 None 💨 8 mph H 70%30.15 inHg

3:00 AM

Mostly cloudy night

80° 💧 None 💨 7 mph H 76%30.15 inHg

4:00 AM

Clear night

79° 💧 None 💨 5 mph H 80%30.12 inHg

5:00 AM

Mostly clear night

78° 💧 None 💨 4 mph H 84%30.12 inHg

6:00 AM

Clear night

78° 💧 None 💨 3 mph H 87%30.15 inHg

7:00 AM

Mostly clear night

77° 💧 None 💨 4 mph H 88%30.15 inHg

8:00 AM

Sunny

78° 💧 None 💨 4 mph H 85%30.15 inHg

9:00 AM

Sunny

82° 💧 None 💨 5 mph H 74%30.15 inHg

10:00 AM

Sunny

85° 💧 None 💨 6 mph H 62%30.18 inHg

11:00 AM

Sunny

89° 💧 None 💨 4 mph H 51%30.15 inHg

12:00 PM

Sunny

92° 💧 None 💨 5 mph H 43%30.15 inHg

1:00 PM

Sunny

95° 💧 None 💨 5 mph H 37%30.12 inHg

2:00 PM

Strong thunderstorm

97° 💧 None 💨 7 mph H 34%30.09 inHg

3:00 PM

Strong thunderstorm

97° 💧 0.002 in 💨 8 mph H 36%30.06 inHg

4:00 PM

Light thunderstorms

93° 💧 0.010 in 💨 10 mph H 45%30.03 inHg

5:00 PM

Light thunderstorms

88° 💧 0.017 in 💨 9 mph H 57%30.06 inHg

6:00 PM

Mostly cloudy

90° 💧 0.001 in 💨 10 mph H 52%30.03 inHg

7:00 PM

Light thunderstorms

89° 💧 0.003 in 💨 8 mph H 56%30.06 inHg

8:00 PM

Strong thunderstorm

87° 💧 0.001 in 💨 8 mph H 59%30.06 inHg

9:00 PM

Overcast night

83° 💧 0.002 in 💨 9 mph H 67%30.12 inHg

10:00 PM

Light thunderstorms

82° 💧 0.006 in 💨 7 mph H 75%30.12 inHg

11:00 PM

Overcast night

82° 💧 None 💨 7 mph H 75%30.12 inHg

Friday

12:00 AM

Overcast night

81° 💧 None 💨 7 mph H 75%30.12 inHg

1:00 AM

Overcast night

81° 💧 None 💨 6 mph H 76%30.12 inHg

2:00 AM

Overcast night

80° 💧 None 💨 5 mph H 79%30.12 inHg

3:00 AM

Mostly cloudy night

79° 💧 None 💨 5 mph H 82%30.12 inHg

4:00 AM

Partly cloudy night

79° 💧 0.000 in 💨 5 mph H 85%30.12 inHg

5:00 AM

Partly cloudy night

78° 💧 0.001 in 💨 5 mph H 87%30.12 inHg

6:00 AM

Mostly clear night

78° 💧 0.000 in 💨 5 mph H 88%30.09 inHg

7:00 AM

Mostly clear night

77° 💧 None 💨 5 mph H 91%30.12 inHg

8:00 AM

Partly cloudy

78° 💧 0.000 in 💨 6 mph H 88%30.12 inHg

9:00 AM

Mostly sunny

81° 💧 0.000 in 💨 6 mph H 78%30.12 inHg

10:00 AM

Sunny

84° 💧 None 💨 6 mph H 66%30.12 inHg

11:00 AM

Sunny

88° 💧 None 💨 7 mph H 52%30.12 inHg

12:00 PM

Sunny

91° 💧 None 💨 8 mph H 44%30.12 inHg

1:00 PM

Sunny

93° 💧 None 💨 8 mph H 40%30.09 inHg

2:00 PM

Sunny

94° 💧 None 💨 8 mph H 36%30.06 inHg

3:00 PM

Sunny

96° 💧 None 💨 9 mph H 34%30.00 inHg

4:00 PM

Sunny

96° 💧 None 💨 9 mph H 32%29.97 inHg

5:00 PM

Sunny

96° 💧 None 💨 9 mph H 32%29.97 inHg

6:00 PM

Mostly sunny

95° 💧 None 💨 9 mph H 32%29.94 inHg

7:00 PM

Mostly sunny

92° 💧 None 💨 9 mph H 34%29.94 inHg

Saturday

4:00 AM

Partly cloudy night

79° 💧 None 💨 3 mph H 83%30.00 inHg

7:00 AM

Overcast night

78° 💧 None 💨 3 mph H 87%30.00 inHg

10:00 AM

Light rain

84° 💧 None 💨 4 mph H 69%30.00 inHg

1:00 PM

Mostly sunny

93° 💧 None 💨 6 mph H 45%29.94 inHg

4:00 PM

Light rain

96° 💧 None 💨 8 mph H 38%29.85 inHg

7:00 PM

Sunny

90° 💧 None 💨 12 mph H 50%29.83 inHg

10:00 PM

Clear night

84° 💧 None 💨 11 mph H 66%29.88 inHg

Sunday

1:00 AM

Light rain

81° 💧 None 💨 9 mph H 79%29.94 inHg

4:00 AM

Clear night

79° 💧 None 💨 6 mph H 86%29.91 inHg

7:00 AM

Mostly clear night

77° 💧 None 💨 3 mph H 93%29.91 inHg

10:00 AM

Mostly cloudy

85° 💧 None 💨 6 mph H 68%29.91 inHg

1:00 PM

Overcast

94° 💧 None 💨 7 mph H 45%29.88 inHg

4:00 PM

Mostly cloudy

97° 💧 None 💨 8 mph H 35%29.80 inHg

7:00 PM

Overcast

93° 💧 None 💨 8 mph H 41%29.77 inHg

10:00 PM

Overcast night

87° 💧 None 💨 13 mph H 58%29.85 inHg

Monday

1:00 AM

Mostly cloudy night

83° 💧 None 💨 10 mph H 73%29.88 inHg

4:00 AM

Clear night

80° 💧 None 💨 7 mph H 85%29.88 inHg

7:00 AM

Clear night

78° 💧 None 💨 4 mph H 90%29.88 inHg

10:00 AM

Sunny

86° 💧 None 💨 6 mph H 66%29.91 inHg

1:00 PM

Sunny

95° 💧 None 💨 6 mph H 41%29.88 inHg

4:00 PM

Mostly sunny

99° 💧 None 💨 7 mph H 32%29.80 inHg

7:00 PM

Mostly sunny

91° 💧 None 💨 12 mph H 47%29.80 inHg

10:00 PM

Mostly clear night

87° 💧 None 💨 8 mph H 55%29.88 inHg

Tuesday

1:00 AM

Clear night

82° 💧 None 💨 10 mph H 70%29.94 inHg

7:00 AM

Clear night

82° 💧 None 💨 9 mph H 69%29.94 inHg

1:00 PM

Mostly sunny

76° 💧 None 💨 2 mph H 94%29.94 inHg

7:00 PM

Mostly sunny

95° 💧 None 💨 6 mph H 43%29.94 inHg

Wednesday

1:00 AM

Mostly clear night

94° 💧 None 💨 14 mph H 36%29.83 inHg

7:00 AM

Clear night

83° 💧 None 💨 8 mph H 70%30.00 inHg

1:00 PM

Sunny

78° 💧 None 💨 2 mph H 88%30.00 inHg

7:00 PM

Mostly sunny

95° 💧 None 💨 9 mph H 42%30.00 inHg

Thursday

1:00 AM

Mostly clear night

94° 💧 None 💨 13 mph H 36%29.88 inHg

7:00 AM

Mostly clear night

83° 💧 None 💨 7 mph H 67%30.03 inHg

1:00 PM

Sunny

78° 💧 None 💨 3 mph H 85%30.03 inHg

7:00 PM

Mostly sunny

95° 💧 None 💨 9 mph H 39%30.00 inHg

Friday

1:00 AM

Mostly clear night

94° 💧 None 💨 10 mph H 37%29.91 inHg

7:00 AM

Mostly clear night

84° 💧 None 💨 6 mph H 67%30.03 inHg

1:00 PM

Partly cloudy

77° 💧 None 💨 7 mph H 79%30.03 inHg

7:00 PM

Mostly sunny

96° 💧 None 💨 8 mph H 39%30.03 inHg

Saturday

1:00 AM

Light thunderstorms

82° 💧 None 💨 8 mph H 79%29.94 inHg

7:00 AM

Mostly clear night

79° 💧 None 💨 4 mph H 78%30.03 inHg

1:00 PM

Overcast

77° 💧 None 💨 6 mph H 83%30.00 inHg

7:00 PM

Partly cloudy

93° 💧 None 💨 8 mph H 43%30.00 inHg

Sunday

1:00 AM

Mostly cloudy night

91° 💧 None 💨 4 mph H 44%29.88 inHg

7:00 AM

Clear night

79° 💧 None 💨 8 mph H 70%29.97 inHg

1:00 PM

Sunny

75° 💧 None 💨 6 mph H 80%29.94 inHg

7:00 PM

Mostly sunny

93° 💧 None 💨 3 mph H 41%29.91 inHg

Monday

1:00 AM

Mostly clear night

83° 💧 None 💨 11 mph H 65%29.83 inHg

7:00 AM

Clear night

77° 💧 None 💨 6 mph H 77%29.85 inHg

1:00 PM

Partly cloudy

74° 💧 None 💨 5 mph H 80%29.85 inHg

7:00 PM

Mostly sunny

92° 💧 None 💨 3 mph H 41%29.83 inHg

Tuesday

1:00 AM

Mostly clear night

91° 💧 None 💨 3 mph H 39%29.74 inHg

7:00 AM

Clear night

81° 💧 None 💨 4 mph H 61%29.80 inHg

1:00 PM

Sunny

77° 💧 None 💨 5 mph H 68%29.80 inHg

7:00 PM

Mostly sunny

94° 💧 None 💨 1 mph H 35%29.80 inHg

Wednesday

1:00 AM

Mostly clear night

93° 💧 None 💨 5 mph H 33%29.71 inHg

7:00 AM

Clear night

83° 💧 None 💨 4 mph H 47%29.77 inHg

1:00 PM

Sunny

77° 💧 None 💨 3 mph H 63%29.80 inHg

7:00 PM

Sunny

97° 💧 None 💨 6 mph H 30%29.80 inHg

Thursday

1:00 AM

Clear night

96° 💧 None 💨 7 mph H 27%29.74 inHg

In Castroville and, more broadly, across the state of Texas: The rest of the day will be mostly sunny with just a few clouds crossing the sky. Temperatures will remain hot, ranging from 85 to 91 degrees Fahrenheit. Winds will be light, coming from the southeast at speeds up to 8 mph, with occasional gusts reaching 16 mph. No rain is expected, so outdoor plans can proceed without concern for precipitation. It will be a warm and breezy afternoon, so staying hydrated and wearing sun protection is advisable. As the day progresses, conditions will stay dry and warm, making it suitable for outdoor activities.

15-Day Weather Outlook for Castroville

TomorrowTomorrow

Strong thunderstorm 97°/77° 💧 None 💨 10 mph

Friday, Sep 18Fri Sep 18

Overcast 96°/77° 💧 None 💨 9 mph

Saturday, Sep 19Sat Sep 19

Light rain 96°/78° 💧 0.069 in 💨 12 mph

Sunday, Sep 20Sun Sep 20

Light rain 97°/77° 💧 0.017 in 💨 13 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 99°/78° 💧 0.011 in 💨 12 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 95°/76° 💧 0.075 in 💨 10 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 95°/78° 💧 0.004 in 💨 14 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 95°/78° 💧 0.007 in 💨 13 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 96°/77° 💧 0.005 in 💨 10 mph

Saturday, Sep 26Sat Sep 26

Light thunderstorms 93°/77° 💧 0.323 in 💨 8 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 93°/75° 💧 0.011 in 💨 8 mph

Monday, Sep 28Mon Sep 28

Mostly sunny 92°/74° 💧 0.038 in 💨 11 mph

Tuesday, Sep 29Tue Sep 29

Mostly sunny 94°/77° 💧 0.014 in 💨 5 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 97°/77° 💧 0.003 in 💨 6 mph

Thursday, Oct 1Thu Oct 1

Sunny 96°/96° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Castroville

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Castroville

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 PM

PM2.5 Fine particles Good 1,2µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,1µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 61,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,3µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Castroville

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 9,0Very high 🙂Fair

Tomorrow UV 8,8Very high 🙂Fair

Friday UV 8,5Very high 🙂Fair

Saturday UV 9,7Very high 🙂Fair

Sunday UV 8,0Very high 🙂Fair

Monday UV 8,0Very high —Unavailable

Tuesday UV 8,0Very high —Unavailable

Hourly UV index today

12:00 PMUV 7,2 1:00 PMUV 8,8 2:00 PMUV 9,0 3:00 PMUV 7,7 4:00 PMUV 5,3 5:00 PMUV 2,8 6:00 PMUV 0,9 7:00 PMUV 0,1

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Castroville

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · CASTROVILLE, TEXAS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 8:59 PM–6:01 AM

☁ Cloud cover 6% Real hourly forecast for the best viewing hour.

☾ Moonlight 30% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 51° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min72%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Castroville were last refreshed today at 11:13 AM. The current forecast period extends through 18/09/2026 at 9:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.