Longmont, Colorado 7-day weather forecast
Monday 9 November 2026 | 08:55
12°
Broken clouds
Feels like 8°
- High
- 18°
- Low
- -3°
- Humidity
- 23%
- Wind
- 8 km/h
7-day forecast
14 daysHourly forecast
DetailsLongmont rain radar
Temperature and rain / Longmont
The coming days
High
22°
Low
-3°
Average high
17.7°
Average low
2.7°
Total rain
0.3 mm
Average rain
0.0 mm
Air quality - Longmont
Particles and ozone
Good
8.40 µg/m³
0-1212-3535-5555+
The air is clean: enjoy the outdoors.
PM108.80µg/m³
Ozone64µg/m³
Data updated hourly
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Frequently asked questions
Quick answers about the weather in Longmont
Tomorrow in Longmont, expect Few clouds 🌤️, with:\n\n- High of 20°\n- Low of 2°
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Our data is updated regularly to give you the most reliable forecast.
Last updated: 2026-11-09