| NWS Forecast for: Longmont CO Issued by: National Weather Service Denver-Boulder, CO Last Update: 4:01 am MDT Jun 18, 2025 | |
This Afternoon: Sunny, with a high near 84. East wind around 8 mph. Tonight: Mostly clear, with a low around 56. East southeast wind 5 to 7 mph becoming light and variable after midnight. Juneteenth: Sunny, with a high near 96. Calm wind becoming southeast 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph. Thursday Night: Mostly clear, with a low around 61. South southeast wind 5 to 8 mph becoming west in the evening. Friday: Sunny and hot, with a high near 101. Breezy, with a southwest wind 6 to 15 mph, with gusts as high as 30 mph. Friday Night: Mostly clear, with a low around 62. Saturday: Sunny and hot, with a high near 100. Saturday Night: Mostly clear, with a low around 62. Sunday: Sunny, with a high near 95. Sunday Night: Partly cloudy, with a low around 57. Monday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 78. Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 81. | |
| Longmont CO 40.16°N 105.12°W (Elev. 5000 ft) | |
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