Round Rock, TX 78682 Weather

Williamson County4:51 PM CDT30.66°N, 97.60°W
Air Quality Alert until 7:00 PM Wed

Current conditions

Sunny
83°
Sunny
Feels like 81°
High 84°·Low 54°
WindENE 5 mph gusts 13 mph
Humidity31%
Dew point49°
Visibility10 mi
Cloud cover3%
UV index3 Moderate
Sunrise7:37 AM
Sunset6:55 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Today

    Sunny, with a high near 84. East northeast wind 0 to 5 mph.

  • Tonight

    Mostly clear, with a low around 54. East northeast wind 0 to 5 mph.

  • Wednesday

    Sunny, with a high near 85. North northeast wind 0 to 5 mph.

National Weather Service forecast updated 14 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 83°
  2. 5 PM Sunny 82°
  3. 6 PM Clear 80°
  4. 7 PM Clear 77°
  5. 8 PM Clear 71°
  6. 9 PM Clear 69°
  7. 10 PM Clear 66°
  8. 11 PM Clear 64°
  9. Wed12 AM Clear 63°
  10. 1 AM Clear 61°
  11. 2 AM Mostly Clear 59°
  12. 3 AM Mostly Clear 58°
  13. 4 AM Mostly Clear 57°
  14. 5 AM Mostly Clear 56°
  15. 6 AM Sunny 55°
  16. 7 AM Sunny 54°
  17. 8 AM Sunny 54°
  18. 9 AM Sunny 59°
  19. 10 AM Sunny 68°
  20. 11 AM Sunny 73°
  21. 12 PM Sunny 76°
  22. 1 PM Sunny 80°
  23. 2 PM Sunny 82°
  24. 3 PM Sunny 83°

10-day forecast

Details
  1. TodayOct 20 Sunny Sunny54°84°
  2. WedOct 21 Sunny Sunny55°85°
  3. ThuOct 22 Sunny Sunny55°84°
  4. FriOct 23 Sunny Sunny55°84°
  5. SatOct 24 Mostly Sunny Mostly Sunny60°85°
  6. SunOct 25 Partly Sunny Partly Sunny60°83°
  7. MonOct 26 Partly Sunny Partly Sunny58°82°
  8. TueOct 27 Cloudy Cloudy0.02 in62°74°
  9. WedOct 28 Cloudy Cloudy60°75°
  10. ThuOct 29 Sunny Sunny57°77°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Round Rock

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Air quality

71
Moderate
Ozone

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • TueModerate
  • WedUnhealthy for Sensitive Groups Action day
  • ThuUnhealthy for Sensitive Groups

Austin, TX reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:37 AM
Sunset 6:55 PM
Daylight 11 h 18 min (−1 min 46 s tomorrow)
Waxing Gibbous · 72% lit
Moonrise 3:45 PM Moonset 2:07 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low80° / 55°
Record high93° (2004)
Record low37° (1989)
Wettest2.60 in (1993)
Yesterday66° / 45°
Month to date2.33 in (normal 2.35 in)

Georgetown Lake, records since 1980. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in EWX, issued 3 hrs ago

Key Messages

Updated at 124 PM CDT Tue Oct 20 2026

- Warm and rain-free conditions persist through Saturday

- Low rain chances (20-30%) return early next week, mainly over the Rio Grande Plains and Southern Edwards Plateau

Discussion

(Tonight through next Tuesday) Issued at 124 PM CDT Tue Oct 20 2026

A ridge over Mexico will be the main driver in our weather through this week, amplifying and elongating its axis over Texas through Saturday, leading to warm, rain-free, and mostly clear to partly cloudy conditions. High temperatures will generally stay in the 80s with low temperatures well into the 50s tonight, creeping back into the lower 60s by this weekend.

Shortwave disturbances from a mid-level low over the Four Corners region moving northeast will bring our next low rain chances (20- 30%) early next week, mainly over the Rio Grande Plains and Southern Edwards Plateau. We'll also see an increase in our cloud cover, reducing our high temperatures across South-Central Texas by a couple degrees.

Aviation

(18Z TAFS) Issued at 1221 PM CDT Tue Oct 20 2026

VFR conditions will prevail for most terminals through the TAF cycle. Borderline MVFR/VFR and slightly stronger southeasterly winds are currently over DRT, but CIGs will rise and winds will weaken here shortly over the next couple of hours. VFR conditions are expected to continue through the early morning hours across all terminals as dry conditions linger along with light variable winds.

Preliminary Point Temps

Austin Camp Mabry 56 85 58 86 / 0 0 0 0 Austin Bergstrom Intl Airport 55 85 58 86 / 0 0 0 0 New Braunfels Muni Airport 56 84 59 85 / 0 0 0 0 Burnet Muni Airport 53 82 56 82 / 0 0 0 0 Del Rio Intl Airport 57 85 61 84 / 0 0 0 10 Georgetown Muni Airport 53 83 56 84 / 0 0 0 0 Hondo Muni Airport 55 86 60 85 / 0 0 0 10 San Marcos Muni Airport 54 85 58 86 / 0 0 0 0 La Grange - Fayette Regional 58 85 59 86 / 0 0 0 0 San Antonio Intl Airport 57 84 61 84 / 0 0 0 0 Stinson Muni Airport 59 85 63 85 / 0 0 0 0

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.