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Current weather in Round Rock is clear sky.

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

Is the weather forecast for Round Rock updated regularly?

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

Now · 10:57 AM

Round Rock Weather & Hourly Forecast

United States · Texas · 78665

90°F

Sunny

Feels like: 99°F

💧 Humidity 58% 🌡 Pressure 30.00 inHg 💨 Wind 5 mph 👁 Visibility 6.2 mi ☁ Clouds 0% ☀️ UV index 3.3 · Moderate 🌅 Sunrise 7:07 AM 🌇 Sunset 7:54 PM

Hourly Forecast for Round Rock

Today

11:00 AM

Sunny

90° 💧 None 💨 5 mph H 58%30.00 inHg

2:00 PM

Partly cloudy

93° 💧 None 💨 5 mph H 46%29.94 inHg

5:00 PM

Mostly cloudy

97° 💧 None 💨 13 mph H 27%29.83 inHg

8:00 PM

Overcast night

88° 💧 None 💨 6 mph H 42%29.85 inHg

11:00 PM

Mostly cloudy night

85° 💧 None 💨 8 mph H 52%29.91 inHg

Tomorrow

2:00 AM

Clear night

81° 💧 None 💨 4 mph H 54%29.91 inHg

5:00 AM

Partly cloudy night

81° 💧 None 💨 8 mph H 60%29.91 inHg

8:00 AM

Sunny

82° 💧 None 💨 11 mph H 56%29.94 inHg

11:00 AM

Sunny

93° 💧 None 💨 11 mph H 40%29.97 inHg

2:00 PM

Sunny

100° 💧 None 💨 8 mph H 29%29.88 inHg

5:00 PM

Mostly cloudy

97° 💧 0.01 in 💨 8 mph H 28%29.83 inHg

8:00 PM

Light rain

87° 💧 0.02 in 💨 8 mph H 45%29.85 inHg

11:00 PM

Mostly cloudy night

82° 💧 None 💨 16 mph H 55%29.91 inHg

Thursday

2:00 AM

Clear night

82° 💧 None 💨 16 mph H 65%29.91 inHg

5:00 AM

Mostly clear night

80° 💧 None 💨 14 mph H 73%29.91 inHg

8:00 AM

Sunny

80° 💧 None 💨 12 mph H 72%29.94 inHg

Today

11:00 AM

Sunny

90° 💧 None 💨 5 mph H 58%30.00 inHg

12:00 PM

Sunny

90° 💧 None 💨 5 mph H 56%30.00 inHg

1:00 PM

Sunny

91° 💧 None 💨 6 mph H 52%29.97 inHg

2:00 PM

Partly cloudy

93° 💧 None 💨 5 mph H 46%29.94 inHg

3:00 PM

Mostly cloudy

95° 💧 None 💨 5 mph H 39%29.91 inHg

4:00 PM

Mostly cloudy

99° 💧 None 💨 8 mph H 27%29.85 inHg

5:00 PM

Mostly cloudy

97° 💧 None 💨 13 mph H 27%29.83 inHg

6:00 PM

Overcast

93° 💧 None 💨 21 mph H 38%29.83 inHg

7:00 PM

Mostly cloudy

90° 💧 None 💨 11 mph H 41%29.85 inHg

8:00 PM

Overcast night

88° 💧 None 💨 6 mph H 42%29.85 inHg

9:00 PM

Overcast night

87° 💧 None 💨 5 mph H 42%29.88 inHg

10:00 PM

Overcast night

87° 💧 None 💨 7 mph H 45%29.91 inHg

11:00 PM

Mostly cloudy night

85° 💧 None 💨 8 mph H 52%29.91 inHg

Tomorrow

12:00 AM

Mostly cloudy night

82° 💧 None 💨 6 mph H 56%29.91 inHg

1:00 AM

Partly cloudy night

82° 💧 None 💨 6 mph H 55%29.91 inHg

2:00 AM

Clear night

81° 💧 None 💨 4 mph H 54%29.91 inHg

3:00 AM

Partly cloudy night

81° 💧 None 💨 5 mph H 56%29.91 inHg

4:00 AM

Partly cloudy night

80° 💧 None 💨 7 mph H 58%29.91 inHg

5:00 AM

Partly cloudy night

81° 💧 None 💨 8 mph H 60%29.91 inHg

6:00 AM

Partly cloudy night

80° 💧 None 💨 9 mph H 61%29.91 inHg

7:00 AM

Partly cloudy night

80° 💧 None 💨 9 mph H 60%29.94 inHg

8:00 AM

Sunny

82° 💧 None 💨 11 mph H 56%29.94 inHg

9:00 AM

Sunny

85° 💧 None 💨 13 mph H 51%29.97 inHg

10:00 AM

Sunny

89° 💧 None 💨 12 mph H 46%29.97 inHg

11:00 AM

Sunny

93° 💧 None 💨 11 mph H 40%29.97 inHg

12:00 PM

Sunny

96° 💧 None 💨 10 mph H 35%29.94 inHg

1:00 PM

Sunny

97° 💧 None 💨 9 mph H 31%29.91 inHg

2:00 PM

Sunny

100° 💧 None 💨 8 mph H 29%29.88 inHg

3:00 PM

Mostly sunny

98° 💧 None 💨 8 mph H 27%29.85 inHg

4:00 PM

Partly cloudy

99° 💧 None 💨 7 mph H 27%29.83 inHg

5:00 PM

Mostly cloudy

97° 💧 None 💨 8 mph H 28%29.83 inHg

6:00 PM

Mostly cloudy

95° 💧 None 💨 5 mph H 30%29.83 inHg

7:00 PM

Light rain

92° 💧 0.01 in 💨 5 mph H 35%29.80 inHg

8:00 PM

Light rain

87° 💧 0.01 in 💨 8 mph H 45%29.85 inHg

9:00 PM

Light rain

85° 💧 0.01 in 💨 11 mph H 45%29.85 inHg

10:00 PM

Overcast night

84° 💧 None 💨 17 mph H 51%29.88 inHg

11:00 PM

Mostly cloudy night

82° 💧 None 💨 16 mph H 55%29.91 inHg

Thursday

12:00 AM

Mostly cloudy night

80° 💧 None 💨 16 mph H 58%29.91 inHg

1:00 AM

Partly cloudy night

79° 💧 None 💨 16 mph H 61%29.91 inHg

2:00 AM

Clear night

82° 💧 None 💨 16 mph H 65%29.91 inHg

3:00 AM

Mostly clear night

81° 💧 None 💨 15 mph H 70%29.91 inHg

4:00 AM

Mostly clear night

80° 💧 None 💨 15 mph H 72%29.91 inHg

5:00 AM

Mostly clear night

80° 💧 None 💨 14 mph H 73%29.91 inHg

6:00 AM

Mostly clear night

80° 💧 None 💨 12 mph H 73%29.91 inHg

7:00 AM

Mostly clear night

79° 💧 None 💨 12 mph H 73%29.91 inHg

8:00 AM

Sunny

80° 💧 None 💨 12 mph H 72%29.94 inHg

9:00 AM

Sunny

83° 💧 None 💨 12 mph H 63%29.94 inHg

10:00 AM

Sunny

86° 💧 None 💨 12 mph H 53%29.94 inHg

11:00 AM

Sunny

90° 💧 None 💨 11 mph H 44%29.94 inHg

12:00 PM

Sunny

94° 💧 None 💨 10 mph H 38%29.94 inHg

1:00 PM

Sunny

96° 💧 None 💨 9 mph H 34%29.91 inHg

2:00 PM

Partly cloudy

98° 💧 None 💨 9 mph H 31%29.88 inHg

3:00 PM

Partly cloudy

100° 💧 None 💨 9 mph H 30%29.85 inHg

4:00 PM

Partly cloudy

100° 💧 None 💨 8 mph H 28%29.83 inHg

5:00 PM

Partly cloudy

99° 💧 None 💨 10 mph H 30%29.83 inHg

6:00 PM

Light rain

85° 💧 0.01 in 💨 18 mph H 57%29.85 inHg

7:00 PM

Mostly cloudy

88° 💧 None 💨 14 mph H 51%29.85 inHg

8:00 PM

Overcast night

87° 💧 None 💨 17 mph H 53%29.85 inHg

9:00 PM

Overcast night

88° 💧 None 💨 16 mph H 51%29.85 inHg

10:00 PM

Overcast night

87° 💧 None 💨 13 mph H 52%29.88 inHg

11:00 PM

Overcast night

86° 💧 None 💨 15 mph H 55%29.88 inHg

Friday

12:00 AM

Overcast night

84° 💧 None 💨 16 mph H 60%29.88 inHg

1:00 AM

Overcast night

83° 💧 None 💨 15 mph H 65%29.88 inHg

2:00 AM

Overcast night

82° 💧 None 💨 15 mph H 69%29.88 inHg

3:00 AM

Overcast night

81° 💧 None 💨 13 mph H 71%29.88 inHg

4:00 AM

Overcast night

81° 💧 None 💨 14 mph H 74%29.88 inHg

5:00 AM

Overcast night

80° 💧 None 💨 12 mph H 75%29.88 inHg

6:00 AM

Overcast night

80° 💧 None 💨 10 mph H 76%29.88 inHg

7:00 AM

Overcast night

80° 💧 None 💨 10 mph H 77%29.91 inHg

8:00 AM

Light rain

80° 💧 0.02 in 💨 8 mph H 77%29.94 inHg

9:00 AM

Moderate rain

81° 💧 0.05 in 💨 4 mph H 73%29.97 inHg

10:00 AM

Light rain

78° 💧 0.04 in 💨 5 mph H 83%29.97 inHg

11:00 AM

Overcast

81° 💧 None 💨 8 mph H 74%29.97 inHg

12:00 PM

Overcast

87° 💧 None 💨 9 mph H 58%29.97 inHg

1:00 PM

Overcast

88° 💧 None 💨 9 mph H 53%29.94 inHg

2:00 PM

Overcast

89° 💧 None 💨 10 mph H 51%29.91 inHg

3:00 PM

Overcast

90° 💧 None 💨 9 mph H 47%29.91 inHg

4:00 PM

Light rain

91° 💧 0.01 in 💨 6 mph H 39%29.88 inHg

5:00 PM

Light rain

93° 💧 0.01 in 💨 2 mph H 32%29.85 inHg

6:00 PM

Overcast

92° 💧 None 💨 4 mph H 32%29.83 inHg

7:00 PM

Overcast

90° 💧 None 💨 6 mph H 38%29.85 inHg

8:00 PM

Overcast night

88° 💧 None 💨 5 mph H 40%29.85 inHg

9:00 PM

Light rain

88° 💧 0.01 in 💨 6 mph H 41%29.85 inHg

10:00 PM

Mostly cloudy night

85° 💧 None 💨 10 mph H 50%29.88 inHg

11:00 PM

Mostly cloudy night

84° 💧 None 💨 12 mph H 54%29.88 inHg

Saturday

12:00 AM

Partly cloudy night

83° 💧 None 💨 13 mph H 63%29.91 inHg

1:00 AM

Partly cloudy night

82° 💧 None 💨 14 mph H 71%29.91 inHg

2:00 AM

Clear night

81° 💧 None 💨 12 mph H 73%29.91 inHg

3:00 AM

Clear night

80° 💧 None 💨 11 mph H 73%29.91 inHg

4:00 AM

Clear night

80° 💧 None 💨 10 mph H 73%29.88 inHg

5:00 AM

Clear night

79° 💧 None 💨 9 mph H 76%29.88 inHg

6:00 AM

Clear night

79° 💧 None 💨 8 mph H 78%29.91 inHg

7:00 AM

Clear night

78° 💧 None 💨 7 mph H 80%29.91 inHg

8:00 AM

Sunny

79° 💧 None 💨 7 mph H 77%29.94 inHg

9:00 AM

Sunny

82° 💧 None 💨 9 mph H 68%29.94 inHg

10:00 AM

Sunny

86° 💧 None 💨 8 mph H 58%29.97 inHg

In Round Rock and, more broadly, across the state of Texas: The rest of the day will feature a mix of sun and clouds, with temperatures climbing into the high 80s and approaching the low 90s. Winds will primarily come from the east at around 10 to 13 mph, with gusts reaching up to 18 mph, providing a steady but moderate breeze. No rain is expected, so outdoor plans can go ahead without concern for precipitation. It will remain quite warm, so staying hydrated and wearing sun protection is advisable if you're spending time outdoors. Conditions are generally comfortable despite the heat, thanks to the breezy conditions. Overall, it looks like a warm and partly cloudy afternoon with no significant weather disruptions.

15-Day Weather Outlook for Round Rock

TomorrowTomorrow

Light rain 100°/80° 💧 0.03 in 💨 17 mph

Thursday, Sep 3Thu Sep 3

Light rain 100°/79° 💧 0.01 in 💨 18 mph

Friday, Sep 4Fri Sep 4

Moderate rain 91°/78° 💧 0.13 in 💨 16 mph

Saturday, Sep 5Sat Sep 5

Sunny 100°/78° 💧 None 💨 14 mph

Sunday, Sep 6Sun Sep 6

Light rain 99°/80° 💧 0.00 in 💨 13 mph

Monday, Sep 7Mon Sep 7

Light rain 97°/81° 💧 0.03 in 💨 13 mph

Tuesday, Sep 8Tue Sep 8

Sunny 101°/79° 💧 None 💨 19 mph

Wednesday, Sep 9Wed Sep 9

Light rain 96°/79° 💧 0.01 in 💨 17 mph

Thursday, Sep 10Thu Sep 10

Light rain 102°/79° 💧 0.00 in 💨 20 mph

Friday, Sep 11Fri Sep 11

Light rain 98°/80° 💧 0.01 in 💨 20 mph

Saturday, Sep 12Sat Sep 12

Moderate rain 82°/77° 💧 1.56 in 💨 16 mph

Sunday, Sep 13Sun Sep 13

Light rain 98°/77° 💧 0.03 in 💨 16 mph

Monday, Sep 14Mon Sep 14

Light rain 97°/78° 💧 0.05 in 💨 11 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 95°/78° 💧 None 💨 10 mph

Wednesday, Sep 16Wed Sep 16

Light rain 96°/79° 💧 0.01 in 💨 10 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

Good

Nearest forecast value 11:00 AM

PM2.5 Fine particles Good 1,7µg/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 3,6µg/m³

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

O₃ Ozone Good 39,5µg/m³

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

NO₂ Nitrogen dioxide Good 2,4µg/m³

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

Air quality is favorable for outdoor activities.

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 10,1Very high 😊Good

Tomorrow UV 10,1Very high 🙂Fair

Thursday UV 10,1Very high 🙂Fair

Friday UV 10,2Very high 🙂Fair

Saturday UV 9,0Very high 😊Good

Sunday UV 9,0Very high —Unavailable

Monday UV 9,0Very high —Unavailable

Hourly UV index today

11:00 AMUV 5,9 12:00 PMUV 8,5 1:00 PMUV 10,1 2:00 PMUV 10,1 3:00 PMUV 4,2 4:00 PMUV 1,7 5:00 PMUV 0,5 6:00 PMUV 0,1 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.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

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 Round Rock

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 4.71 Population: 127,786

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Forecast data for Round Rock were last refreshed today at 10:57 AM. The current forecast period extends through 03/09/2026 at 8:00 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.