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Longmont, Colorado Weather Forecast

Boulder County 40.17°N, 105.10°W Pop. 102,474 ZIP: 80501

Longmont is in Boulder County, Colorado (pop. 102,474). Below you'll find current conditions, radar, observed precipitation with YTD anomalies, a 7-day forecast, GDD accumulations, and the NWS written forecast.

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NWS Forecast

Nearby Forecasts

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All Colorado forecasts (21) → Interactive forecast tools →