Weather in Longmont, Colorado
Thursday 12 November 2026
19°
Clear sky
Feels like 15°
- High
- 20°
- Low
- 3°
- Humidity
- 33%
- Wind
- 11 km/h
Temperature and rain / Longmont
The coming days
High
20°
Low
-11°
Average high
10.9°
Average low
-1.5°
Total rain
2.7 mm
Average rain
0.2 mm
Air quality - Longmont
Particles and ozone
Good
9.30 µg/m³
0-1212-3535-5555+
The air is clean: enjoy the outdoors.
PM1011.70µg/m³
Ozone67µg/m³
Data updated hourly
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Frequently asked questions
Quick answers about the weather in Longmont
Tomorrow in Longmont, expect Scattered clouds ⛅, with:\n\n- High of 18°\n- Low of 2°
Need more information?
Our data is updated regularly to give you the most reliable forecast.
Last updated: 2026-11-12