Round Rock
Moderate ImpactWilliamson County, TX · As of November 2, 2026 at 6:31 PM
What to Expect for Round Rock
A wetter, slightly cooler winter raises the chance of flooding from frequent storm systems.
El Niño Related Alerts
Checking NWS for active alerts…
Projected Impact for Round Rock
RAINFALL
+28%
vs. seasonal normal
TEMPERATURE
−0.4°C
anomaly vs. normal
PRIMARY RISK
Winter flooding
most likely hazard
PEAK WINDOW
Dec–Mar
strongest effects
Current El Niño Strength
Loading NOAA ENSO data…
Super El Niño chance - 2026 Outlook
88%
How to prepare
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Recommended Supplies
Backup Power for Outages
A power outage is one of the most common storm impacts. These power stations keep the essentials running when the grid doesn't. As an Amazon Associate we earn from qualifying purchases.
Jackery Explorer 300 Portable Power Station
300W and 293Wh in a light, carry-anywhere unit - keeps phones, lights and a router going through a short outage.
View on AmazonJackery Solar Generator 300 with 40W Solar Panel
300W and 292Wh, bundled with a 40W solar panel that tops the battery back up from sunlight when an outage runs long.
View on AmazonJackery Explorer 500 v2 Portable Power Station
500W and 512Wh - runs lights, a router, phones and a laptop through an overnight outage.
View on AmazonJackery HomePower 3600 Plus Power Station
3,600W and 3,584Wh of home backup - enough to run a fridge, sump pump and essentials at once, for a day or more.
View on AmazonRecommended supplies
Gear matched to Round Rock’s El Niño risks. As an Amazon Associate we may earn from qualifying purchases.
Battery-backup sump pump
Keeps a basement or crawlspace dry even if the power drops during a storm, and sends Wi-Fi alerts to your phone.
View on AmazonSandbags & flood barriers
Water-activated barriers that swell like sandbags - lay them across doors and low entry points before a heavy-rain event.
View on AmazonWater leak alarm sensors
Cheap sensors that alert you the moment water reaches a floor or sump.
View on AmazonWaterproof document bag
Protects IDs, insurance papers and passports if you have to move fast.
View on AmazonNOAA emergency weather radio
Hand-crank radio that still gets alerts when cell and power are down.
View on AmazonLED lanterns & headlamps
Reliable hands-free light for an outage - safer than candles.
View on AmazonEmergency preparedness kit
A ready-made 72-hour kit covers most gaps in one purchase.
View on AmazonFirst-aid kit
A stocked kit for the household plus any pets.
View on AmazonEmergency water storage
Stackable 5-gallon containers make it easy to store the standard planning figure: one gallon per person per day.
View on AmazonEmergency shelter tent
A compact two-person mylar tube tent for the go-bag, with paracord and a whistle - shelter from wind and rain if a flood or wildfire forces you out.
View on AmazonRound Rock Weather
LIVEWilliamson County, TX · As of 6:31 PM
No weather data.
Live data - Open-Meteo.
Regional impact figures are general estimates grounded in documented El Niño climatology (see source note above) - not a location-specific forecast. Actual conditions for any single season can differ.