Round Rock, TX 78680 Weather

Williamson County2:37 PM CDT30.66°N, 97.60°W

Current conditions

Sunny
80°
Sunny
Feels like 80°
High 84°·Low 54°
WindENE 5 mph gusts 12 mph
Humidity38%
Dew point52°
Visibility10 mi
Cloud cover3%
UV index6 High
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 11 hrs ago.

Hourly

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

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

67
Moderate
Fine particles (PM2.5)

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

Forecast

  • TueModerate
  • WedUnhealthy for Sensitive Groups
  • 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 · 71% 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 8 hrs ago

Key Messages

Updated at 556 AM CDT Tue Oct 20 2026

- High temperatures warm into the 80s and low 90s this week.

- No rain through the majority of the forecast period. Low chances for rain return to areas near the Rio Grande and Edwards Plateau early next week.

Short Term

(Today through Wednesday) Issued at 126 AM CDT Tue Oct 20 2026

We should finally start to see warmer mornings starting with this morning as lows should stay in the mid 50s north of I-35 with upper 50s to near 60 along and south of the I-35 corridor. We warm up nicely during the day with highs about 5 to 10 degrees warmer than yesterday with low to mid 80s area wide with upper 80s possible along and south of the I-35 Corridor. Tonight we will continue our to see mid to upper 50s areawide as southeasterly return flow remains at the lower levels over our area. Thus we should see lows closer to average for this time of year. By Wednesday we should see slightly warmer highs as we continue to warm back up with highs in low 80s north with mid 80s to near 90 south as ridging continues to remain over the central and southern U.S.

Long Term

(Wednesday night through Monday) Issued at 126 AM CDT Tue Oct 20 2026

Wednesday night we continue our warm and dry pattern as broad ridging remains over South Central Texas and eventually becomes more amplified heading into the late week period. Each day will remain warm and above average for highs starting Thursday and continuing into the weekend with mid 80s through Friday. With mid to upper 80s over the first half of the weekend before leveling off into the low 80s for Sunday and through the rest of the extended period. Lows will also remain mild, in the mid to upper 50s through the entire forecast period. Additionally, we will see the return of more humid conditions then what we currently have with dewpoints back into the 50s and 60s.

Eventually, a trough is expected to move over the western U.S late in the period but the elongated upper ridge should limit impacts for most of our area associated with this feature as most long range models suggest the trough pushing north of our area. The exception being the Rio Grande and Southern Edwards Plateau regions where just enough of a disturbance could clip these areas late in the weekend. However, confidence continues to remain fairly low as pops are only in the 20% to 30% range for now. Stay tuned.

Aviation

(12Z TAFS) Issued at 556 AM CDT Tue Oct 20 2026

VFR conditions will prevail through the TAF cycle at most terminals. Expecting MVFR CIGs to develop at DRT around 14Z and persist through the remainder of the morning. CIGs will transation to VFR by the early afternoon hours (18-19Z). Generally light winds will persist through the period.

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 4Search index and reflects what the press published. Terms of use.