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Weather Overview — Waco Metro Area

Central Texas weather is not subtle. Summers are intensely hot, tornado season is real, hail is frequent, and occasional winter ice storms can shut down the region. This file is essential reading for anyone moving from the Northeast, Midwest, Pacific Coast, or other mild climates.

Climate Summary

Waco has a humid subtropical / semi-arid continental climate with four distinct seasons and wide temperature extremes.

  • Annual average temperature: ~68°F
  • Annual average precipitation: ~36.4 inches
  • Sunshine: ~229 sunny days per year (more than Dallas or Houston)
  • Humidity: Moderate; less humid than Houston but more than El Paso

Monthly Climate Table

Normals based on NWS 1991–2020 data for Waco Regional Airport.

Month Avg High °F Avg Low °F Avg Rain (in) Hazards
January 57°F 40°F 1.7" Occasional ice storms
February 61°F 44°F 2.0" Ice storm risk; severe weather begins
March 69°F 51°F 2.6" Tornado season begins; severe storms
April 77°F 59°F 3.0" Peak tornado season; large hail
May 85°F 67°F 3.1" Tornado & hail peak; flooding risk
June 92°F 73°F 3.0" Heat builds; thunderstorms
July 97°F 77°F 1.8" Peak heat; drought possible
August 96°F 76°F 2.1" Peak heat; heat index 100–110°F+
September 89°F 69°F 3.3" Heat eases; fall severe weather
October 79°F 58°F 3.8" Second tornado season; pleasant temps
November 67°F 48°F 2.3" Cooling; occasional early freeze
December 58°F 41°F 2.1" Mild; ice storm possible

Summer Heat — The Primary Challenge

This is the defining feature of living in Waco. Summers are long, hot, and unavoidable.

  • Average daily highs: 92–97°F from June through August
  • Heat index: Regularly 100–110°F+ in July and August when humidity is added
  • Record high: 114°F (July 2018 / August 2011 drought event)
  • Duration: Temperatures above 90°F typically occur from late May through early October — roughly 5 months
  • A/C is not optional. It runs continuously from June–September. Budget for higher electric bills (see Utilities Guide)
  • Outdoor activity: Early mornings (before 9am) and evenings (after 7pm) are the practical windows for outdoor exercise in peak summer

Tornado Risk

McLennan County sits in the southern portion of "Tornado Alley." This is real — not just a Texas cliché.

  • The 1953 Waco Tornado remains one of the deadliest in U.S. history, killing 114 people and destroying much of downtown
  • Peak tornado seasons:
  • Primary: March through May (most active)
  • Secondary: October through November
  • Typical warning time: 10–15 minutes with modern radar; sometimes less
  • What to do:
  • Know your shelter location before a storm forms — interior room on lowest floor, away from windows
  • Safe rooms and storm shelters are common in newer Waco-area construction; ask about this when buying
  • Sign up for WarnCentralTexas alerts and McLennan County Emergency Management notifications
  • NOAA weather radio or the NWS app is strongly recommended

Hail

Waco sits in a major hail corridor. Significant hail events (1"+ diameter, damaging to vehicles and roofs) occur multiple times per year.

  • Hail season tracks tornado season: March–May and September–November
  • Roof inspection is essential when buying a home — ask about age of roof and prior hail claims
  • Comprehensive auto insurance is strongly recommended; hail damage to vehicles is common
  • Insurance companies in Texas may add surcharges or exclusions for roofs over 10–15 years old
  • Most locals keep vehicles garaged or under cover when storms are forecast

Winter Ice Storms

Waco winters are mild by most standards — snow is rare and usually minor. However, ice storms are a periodic serious hazard.

  • Winter Storm Uri (February 2021) — The most severe Texas weather event in modern history; temperatures dropped to single digits (-2°F in Waco), power grid failures left millions without electricity for days, pipes burst across the metro
  • Average ice events: 1–3 per year; most are 24–48 hour disruptions
  • Snow: Measurable snowfall occurs roughly 1–3 times per decade in Waco; rarely accumulates significantly
  • Infrastructure readiness: Texas road crews are not equipped for sustained winter events; a quarter-inch of ice can close roads and schools for 2–3 days
  • Preparation recommendations:
  • Keep a generator or know how to use propane heat safely (post-Uri lesson)
  • Insulate exposed pipes; know where your main water shutoff is
  • Keep 3–5 days of food, water, and medication on hand in winter months
  • ERCOT (Texas power grid) has added weatherization requirements post-Uri but the grid remains vulnerable

Flooding

Flooding is a real but localized risk in the Waco area.

  • ~16% of Waco buildings carry meaningful flood risk (ClimateCheck data)
  • Primary flood zones are along the Brazos River and its tributaries (Hog Creek, Flat Creek, etc.)
  • Lake Waco is a reservoir that provides flood control for much of the metro — but extreme rain events (like those associated with Gulf hurricanes tracking inland) can overwhelm it
  • Before buying: Check FEMA flood maps at msc.fema.gov for your specific parcel
  • Areas near Hog Creek, along the Bosque/Brazos confluence (Speegleville area), and low-lying East Waco neighborhoods carry higher flood exposure
  • Flood insurance: Standard homeowner's policies do NOT cover flooding; FEMA NFIP or private flood insurance is separate and may be required by lenders in flood zones

Emergency Preparedness Resources

Resource Contact / URL
WarnCentralTexas (alert signup) warnct.org
McLennan County Emergency Management (254) 757-5000
NWS Fort Worth/Dallas — Waco forecasts weather.gov/fwd
NOAA Weather Radio Broadcast on 162.550 MHz (Waco)
FEMA Flood Map Service msc.fema.gov
Texas Division of Emergency Management tdem.texas.gov

Sources