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

Now · 3:59 PM

Round Rock Weather & Hourly Forecast

United States · Texas · 78665

96°F

Mostly sunny

Feels like: 97°F

💧 Humidity 36% 🌡 Pressure 29.88 inHg 💨 Wind 7 mph 👁 Visibility 32.9 mi ☁ Clouds 23% ☀️ UV index 7.0 · High 🌅 Sunrise 7:17 AM 🌇 Sunset 7:28 PM

Hourly Forecast for Round Rock

Today

4:00 PM

Mostly sunny

96° 💧 0.000 in 💨 7 mph H 36%29.88 inHg

7:00 PM

Light rain

87° 💧 0.009 in 💨 13 mph H 51%29.91 inHg

10:00 PM

Partly cloudy night

84° 💧 0.016 in 💨 3 mph H 56%29.97 inHg

Tomorrow

1:00 AM

Light rain

77° 💧 0.029 in 💨 5 mph H 80%30.03 inHg

4:00 AM

Partly cloudy night

75° 💧 0.006 in 💨 8 mph H 83%30.00 inHg

7:00 AM

Clear night

73° 💧 None 💨 4 mph H 89%30.03 inHg

10:00 AM

Sunny

84° 💧 None 💨 3 mph H 60%30.06 inHg

1:00 PM

Mostly sunny

92° 💧 None 💨 5 mph H 43%30.03 inHg

4:00 PM

Partly cloudy

94° 💧 0.002 in 💨 6 mph H 39%29.97 inHg

7:00 PM

Light rain

89° 💧 0.019 in 💨 9 mph H 47%29.97 inHg

10:00 PM

Light rain

83° 💧 0.011 in 💨 7 mph H 63%30.03 inHg

Thursday

1:00 AM

Overcast night

79° 💧 None 💨 4 mph H 73%30.06 inHg

4:00 AM

Overcast night

78° 💧 None 💨 2 mph H 82%30.03 inHg

7:00 AM

Partly cloudy night

75° 💧 None 💨 2 mph H 89%30.06 inHg

10:00 AM

Mostly cloudy

84° 💧 0.005 in 💨 5 mph H 65%30.09 inHg

1:00 PM

Mostly sunny

91° 💧 0.004 in 💨 6 mph H 49%30.06 inHg

Today

4:00 PM

Mostly sunny

96° 💧 0.000 in 💨 7 mph H 36%29.88 inHg

5:00 PM

Mostly sunny

95° 💧 0.000 in 💨 7 mph H 36%29.88 inHg

6:00 PM

Mostly sunny

94° 💧 0.000 in 💨 7 mph H 38%29.88 inHg

7:00 PM

Light rain

87° 💧 0.006 in 💨 13 mph H 51%29.91 inHg

8:00 PM

Mostly clear night

85° 💧 0.003 in 💨 8 mph H 50%29.91 inHg

9:00 PM

Partly cloudy night

85° 💧 None 💨 6 mph H 51%29.94 inHg

10:00 PM

Partly cloudy night

84° 💧 0.001 in 💨 3 mph H 56%29.97 inHg

11:00 PM

Light rain

79° 💧 0.009 in 💨 6 mph H 71%30.00 inHg

Tomorrow

12:00 AM

Light rain

75° 💧 0.005 in 💨 7 mph H 82%30.03 inHg

1:00 AM

Light rain

77° 💧 0.007 in 💨 5 mph H 80%30.03 inHg

2:00 AM

Light rain

76° 💧 0.014 in 💨 7 mph H 79%30.03 inHg

3:00 AM

Light rain

76° 💧 0.008 in 💨 5 mph H 82%30.03 inHg

4:00 AM

Partly cloudy night

75° 💧 0.004 in 💨 8 mph H 83%30.00 inHg

5:00 AM

Partly cloudy night

74° 💧 0.002 in 💨 6 mph H 85%30.00 inHg

6:00 AM

Clear night

74° 💧 None 💨 5 mph H 87%30.00 inHg

7:00 AM

Clear night

73° 💧 None 💨 4 mph H 89%30.03 inHg

8:00 AM

Partly cloudy

74° 💧 None 💨 4 mph H 87%30.03 inHg

9:00 AM

Mostly sunny

79° 💧 None 💨 3 mph H 75%30.06 inHg

10:00 AM

Sunny

84° 💧 None 💨 3 mph H 60%30.06 inHg

11:00 AM

Sunny

88° 💧 None 💨 3 mph H 50%30.06 inHg

12:00 PM

Sunny

90° 💧 None 💨 4 mph H 46%30.06 inHg

1:00 PM

Mostly sunny

92° 💧 None 💨 5 mph H 43%30.03 inHg

2:00 PM

Mostly sunny

94° 💧 None 💨 5 mph H 41%30.00 inHg

3:00 PM

Partly cloudy

94° 💧 None 💨 5 mph H 40%30.00 inHg

4:00 PM

Partly cloudy

94° 💧 0.001 in 💨 6 mph H 39%29.97 inHg

5:00 PM

Mostly cloudy

94° 💧 None 💨 6 mph H 39%29.94 inHg

6:00 PM

Mostly cloudy

92° 💧 0.001 in 💨 7 mph H 40%29.94 inHg

7:00 PM

Light rain

89° 💧 0.008 in 💨 9 mph H 47%29.97 inHg

8:00 PM

Mostly cloudy night

87° 💧 0.001 in 💨 7 mph H 49%29.97 inHg

9:00 PM

Light rain

84° 💧 0.010 in 💨 9 mph H 57%30.00 inHg

10:00 PM

Light rain

83° 💧 0.011 in 💨 7 mph H 63%30.03 inHg

11:00 PM

Overcast night

82° 💧 0.001 in 💨 6 mph H 64%30.06 inHg

Thursday

12:00 AM

Overcast night

80° 💧 None 💨 4 mph H 69%30.06 inHg

1:00 AM

Overcast night

79° 💧 None 💨 4 mph H 73%30.06 inHg

2:00 AM

Overcast night

79° 💧 None 💨 4 mph H 76%30.06 inHg

3:00 AM

Overcast night

78° 💧 None 💨 3 mph H 80%30.03 inHg

4:00 AM

Overcast night

78° 💧 None 💨 2 mph H 82%30.03 inHg

5:00 AM

Mostly cloudy night

77° 💧 None 💨 0 mph H 84%30.03 inHg

6:00 AM

Partly cloudy night

76° 💧 None 💨 1 mph H 85%30.06 inHg

7:00 AM

Partly cloudy night

75° 💧 None 💨 2 mph H 89%30.06 inHg

8:00 AM

Mostly cloudy

76° 💧 None 💨 3 mph H 88%30.06 inHg

9:00 AM

Mostly cloudy

81° 💧 None 💨 4 mph H 74%30.09 inHg

10:00 AM

Mostly cloudy

84° 💧 None 💨 5 mph H 65%30.09 inHg

11:00 AM

Mostly cloudy

87° 💧 0.004 in 💨 6 mph H 57%30.09 inHg

12:00 PM

Partly cloudy

89° 💧 0.002 in 💨 6 mph H 52%30.09 inHg

1:00 PM

Mostly sunny

91° 💧 0.003 in 💨 6 mph H 49%30.06 inHg

2:00 PM

Mostly sunny

93° 💧 0.001 in 💨 6 mph H 45%30.03 inHg

3:00 PM

Mostly cloudy

94° 💧 0.001 in 💨 7 mph H 41%30.00 inHg

4:00 PM

Mostly cloudy

93° 💧 0.001 in 💨 7 mph H 38%30.00 inHg

5:00 PM

Mostly sunny

93° 💧 None 💨 8 mph H 37%29.97 inHg

6:00 PM

Sunny

92° 💧 0.001 in 💨 10 mph H 39%29.97 inHg

7:00 PM

Sunny

90° 💧 None 💨 9 mph H 43%29.97 inHg

8:00 PM

Clear night

88° 💧 None 💨 7 mph H 46%29.97 inHg

9:00 PM

Mostly clear night

87° 💧 None 💨 6 mph H 47%30.00 inHg

10:00 PM

Mostly clear night

85° 💧 None 💨 6 mph H 49%30.03 inHg

11:00 PM

Partly cloudy night

84° 💧 None 💨 6 mph H 52%30.03 inHg

Friday

12:00 AM

Mostly cloudy night

83° 💧 None 💨 7 mph H 55%30.03 inHg

1:00 AM

Overcast night

81° 💧 None 💨 6 mph H 58%30.06 inHg

2:00 AM

Partly cloudy night

80° 💧 None 💨 5 mph H 63%30.06 inHg

3:00 AM

Clear night

79° 💧 None 💨 4 mph H 70%30.06 inHg

4:00 AM

Partly cloudy night

78° 💧 None 💨 3 mph H 77%30.06 inHg

5:00 AM

Overcast night

77° 💧 None 💨 2 mph H 81%30.03 inHg

6:00 AM

Mostly cloudy night

76° 💧 None 💨 1 mph H 84%30.06 inHg

7:00 AM

Mostly clear night

75° 💧 None 💨 1 mph H 86%30.06 inHg

10:00 AM

Overcast

82° 💧 None 💨 3 mph H 65%30.09 inHg

1:00 PM

Mostly cloudy

91° 💧 None 💨 4 mph H 41%30.06 inHg

4:00 PM

Sunny

95° 💧 None 💨 7 mph H 24%29.97 inHg

7:00 PM

Sunny

90° 💧 None 💨 7 mph H 22%29.94 inHg

10:00 PM

Clear night

83° 💧 None 💨 5 mph H 34%30.00 inHg

Saturday

1:00 AM

Mostly clear night

79° 💧 None 💨 7 mph H 44%30.00 inHg

4:00 AM

Mostly clear night

76° 💧 None 💨 6 mph H 67%30.00 inHg

7:00 AM

Partly cloudy night

74° 💧 None 💨 5 mph H 86%30.00 inHg

10:00 AM

Overcast

82° 💧 None 💨 4 mph H 68%30.03 inHg

1:00 PM

Mostly cloudy

91° 💧 None 💨 3 mph H 39%30.00 inHg

4:00 PM

Overcast

96° 💧 None 💨 4 mph H 29%29.91 inHg

7:00 PM

Partly cloudy

92° 💧 None 💨 6 mph H 31%29.88 inHg

10:00 PM

Mostly cloudy night

85° 💧 None 💨 8 mph H 38%29.94 inHg

Sunday

1:00 AM

Partly cloudy night

82° 💧 None 💨 9 mph H 43%29.97 inHg

4:00 AM

Partly cloudy night

77° 💧 None 💨 8 mph H 79%29.97 inHg

7:00 AM

Mostly clear night

75° 💧 None 💨 6 mph H 91%29.97 inHg

10:00 AM

Mostly sunny

83° 💧 None 💨 6 mph H 67%29.97 inHg

1:00 PM

Sunny

94° 💧 None 💨 4 mph H 36%29.94 inHg

4:00 PM

Mostly sunny

98° 💧 None 💨 4 mph H 28%29.83 inHg

7:00 PM

Partly cloudy

94° 💧 None 💨 5 mph H 30%29.80 inHg

10:00 PM

Mostly clear night

89° 💧 None 💨 6 mph H 37%29.83 inHg

Monday

1:00 AM

Partly cloudy night

83° 💧 None 💨 10 mph H 53%29.85 inHg

4:00 AM

Mostly cloudy night

79° 💧 None 💨 9 mph H 80%29.88 inHg

7:00 AM

Partly cloudy night

77° 💧 None 💨 7 mph H 87%29.85 inHg

1:00 PM

Partly cloudy

94° 💧 None 💨 7 mph H 38%29.83 inHg

7:00 PM

Partly cloudy

94° 💧 None 💨 9 mph H 35%29.71 inHg

Tuesday

1:00 AM

Mostly cloudy night

83° 💧 None 💨 12 mph H 65%29.80 inHg

7:00 AM

Partly cloudy night

78° 💧 None 💨 8 mph H 86%29.77 inHg

1:00 PM

Mostly sunny

94° 💧 None 💨 9 mph H 44%29.74 inHg

7:00 PM

Light rain

83° 💧 None 💨 5 mph H 81%29.68 inHg

Wednesday

1:00 AM

Clear night

77° 💧 None 💨 10 mph H 90%29.74 inHg

7:00 AM

Mostly clear night

74° 💧 None 💨 2 mph H 94%29.80 inHg

1:00 PM

Sunny

87° 💧 None 💨 10 mph H 43%29.80 inHg

7:00 PM

Sunny

85° 💧 None 💨 3 mph H 46%29.74 inHg

Thursday

1:00 AM

Clear night

73° 💧 None 💨 4 mph H 69%29.80 inHg

7:00 AM

Clear night

69° 💧 None 💨 2 mph H 79%29.80 inHg

1:00 PM

Mostly sunny

89° 💧 None 💨 2 mph H 38%29.80 inHg

7:00 PM

Sunny

87° 💧 None 💨 2 mph H 38%29.71 inHg

Friday

1:00 AM

Clear night

77° 💧 None 💨 8 mph H 67%29.80 inHg

7:00 AM

Mostly cloudy night

74° 💧 None 💨 5 mph H 99%29.83 inHg

1:00 PM

Mostly sunny

92° 💧 None 💨 5 mph H 43%29.85 inHg

7:00 PM

Partly cloudy

91° 💧 None 💨 4 mph H 35%29.77 inHg

Saturday

1:00 AM

Partly cloudy night

81° 💧 None 💨 7 mph H 62%29.85 inHg

7:00 AM

Light rain

76° 💧 None 💨 5 mph H 90%29.88 inHg

1:00 PM

Partly cloudy

89° 💧 None 💨 9 mph H 47%29.91 inHg

7:00 PM

Partly cloudy

85° 💧 None 💨 9 mph H 53%29.83 inHg

Sunday

1:00 AM

Overcast night

78° 💧 None 💨 7 mph H 29%29.91 inHg

7:00 AM

Partly cloudy night

72° 💧 None 💨 8 mph H 40%29.97 inHg

1:00 PM

Sunny

89° 💧 None 💨 8 mph H 33%29.97 inHg

7:00 PM

Mostly sunny

88° 💧 None 💨 9 mph H 34%29.85 inHg

Monday

1:00 AM

Overcast night

79° 💧 None 💨 7 mph H 41%29.94 inHg

7:00 AM

Mostly cloudy night

75° 💧 None 💨 4 mph H 62%29.94 inHg

1:00 PM

Overcast

88° 💧 None 💨 10 mph H 39%29.91 inHg

7:00 PM

Light rain

82° 💧 None 💨 15 mph H 62%29.80 inHg

Tuesday

1:00 AM

Overcast night

76° 💧 None 💨 10 mph H 87%29.83 inHg

7:00 AM

Mostly cloudy night

75° 💧 None 💨 9 mph H 94%29.77 inHg

1:00 PM

Light rain

90° 💧 None 💨 12 mph H 56%29.74 inHg

7:00 PM

Mostly sunny

88° 💧 None 💨 6 mph H 60%29.65 inHg

Wednesday

1:00 AM

Clear night

81° 💧 None 💨 8 mph H 75%29.74 inHg

7:00 AM

Overcast night

78° 💧 None 💨 9 mph H 95%29.74 inHg

In Round Rock and, more broadly, across the state of Texas: Clear skies this morning give way to very hot conditions as the day progresses, with temperatures climbing between 73 and 99 degrees Fahrenheit. In the afternoon, the heat will intensify, and some brief showers may develop, bringing around 0.04 inches of rain. There is a moderate chance—up to 61%—for rain during the peak hours. Winds will remain light from the southwest, generally around 5 mph, with occasional gusts reaching up to 13 mph. Overall, expect a hot and mainly dry day with a brief window for rain in the late afternoon.

15-Day Weather Outlook for Round Rock

TomorrowTomorrow

Partly cloudy 94°/73° 💧 None 💨 9 mph

Thursday, Sep 24Thu Sep 24

Overcast 94°/75° 💧 None 💨 10 mph

Friday, Sep 25Fri Sep 25

Mostly cloudy 95°/75° 💧 0.115 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Mostly sunny 96°/74° 💧 None 💨 8 mph

Sunday, Sep 27Sun Sep 27

Partly cloudy 98°/75° 💧 None 💨 9 mph

Monday, Sep 28Mon Sep 28

Partly cloudy 94°/77° 💧 0.001 in 💨 10 mph

Tuesday, Sep 29Tue Sep 29

Light rain 94°/78° 💧 0.085 in 💨 12 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 87°/74° 💧 0.213 in 💨 10 mph

Thursday, Oct 1Thu Oct 1

Mostly sunny 89°/69° 💧 None 💨 4 mph

Friday, Oct 2Fri Oct 2

Mostly cloudy 92°/74° 💧 None 💨 8 mph

Saturday, Oct 3Sat Oct 3

Light rain 89°/76° 💧 0.042 in 💨 9 mph

Sunday, Oct 4Sun Oct 4

Overcast 89°/72° 💧 None 💨 9 mph

Monday, Oct 5Mon Oct 5

Overcast 88°/75° 💧 0.001 in 💨 15 mph

Tuesday, Oct 6Tue Oct 6

Light rain 90°/75° 💧 0.108 in 💨 12 mph

Wednesday, Oct 7Wed Oct 7

Overcast 81°/78° 💧 0.037 in 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Round Rock

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Round Rock

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 4:00 PM

PM2.5 Fine particles Good 2,2µg/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 3,2µg/m³

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

O₃ Ozone Fair 95,2µg/m³

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

NO₂ Nitrogen dioxide Good 1,2µg/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 Round Rock

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 8,4Very high 🙂Fair

Tomorrow UV 8,4Very high 😐Moderate

Thursday UV 8,4Very high 😐Moderate

Friday UV 8,8Very high 😐Moderate

Saturday UV 8,3Very high 😐Moderate

Sunday UV 8,0Very high —Unavailable

Monday UV 7,0High —Unavailable

Hourly UV index today

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

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.

High heat

Stay hydrated and avoid intense exercise during the hottest part of the day.

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 Round Rock

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ROUND ROCK, TEXAS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 6:00 AM–7:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 6:00 AM–7:00 AM Astronomical darkness: 8:47 PM–5:59 AM

☁ Cloud cover 5% Real hourly forecast for the best viewing hour.

☾ Moonlight 89% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 68° 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 min73%

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

SEP 20–NOV 20

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

ACTIVE NOW

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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 Round Rock were last refreshed today at 3:59 PM. The current forecast period extends through 24/09/2026 at 1:00 PM. 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.