Longmont, CO — Severe Weather & Radar
No active severe-weather warnings for Longmont, CO right now. Live radar is below — set up alerts to get warned the moment one is issued.
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Severe-weather outlook
The Storm Prediction Center has Longmont, CO in a Marginal Riskfor severe thunderstorms today (Day 1 categorical outlook).
3-day forecast
Forecast via Open-Meteo.
When is severe weather most likely near Longmont?
Around Longmont and the high plains, severe weather peaks in the summer months.
Large hail and damaging winds are the primary threats — the plains just east of the Rockies are especially hail-prone — with flash flooding a concern in and near the mountains.
Based on long-term NOAA / NWS Storm Prediction Center climatology.
In Longmont, CO
Longmont, CO is home to an estimated 90,000 people. Atmostorm shows whether Longmont is inside an active NWS warning polygon right now — and warns you the moment that changes.
Nearby areas
Live radar and active alerts for places near Longmont:
Not an official source — always confirm with the National Weather Service at weather.gov. Data aggregated from NWS/SPC. Facility and population figures are decision-support estimates.