Boulder, us-Colorado State, USA Weather Information
Local Time
2026-03-12 22:18:49 Mountain Standard TimeWeather in the past year
Sun & Astronomy
In Boulder, us-Colorado State, USA, today's sunrise time is 07:13, sunset time is 19:07, nautical twilight begins at 06:16, nautical twilight ends at 20:04, astronomical twilight begins at 05:44, astronomical twilight ends at 20:35.
Temperature Analysis
In Boulder, us-Colorado State, USA region, the lowest temperature occurs in January 2025, with an average temperature of about -5.5°C.
The highest temperature occurs in July 2025, with a maximum temperature of up to 22.6°C.
Based on historical data, the average temperature in January is -5.5°C, February is -2.1°C, March is 5.9°C, April is 7.7°C, May is 12.4°C, June is 18.9°C, July is 22.6°C, August is 21.4°C, September is 16.8°C, October is 10.4°C, November is 6.5°C, December is 4.9°C.
Wind Analysis
In Boulder, us-Colorado State, USA region, the lowest wind speed occurs in January 2025, with an average wind speed of about 31 km/h.
The highest wind speed occurs in December 2025, with a maximum wind speed of up to 43.6 km/h.
Based on historical data, the average wind speed in January is 31 km/h, February is 35 km/h, March is 41.9 km/h, April is 37.4 km/h, May is 37.6 km/h, June is 36.8 km/h, July is 41.4 km/h, August is 36.4 km/h, September is 36.7 km/h, October is 33.2 km/h, November is 33.7 km/h, December is 43.6 km/h.
Sunshine Duration Analysis
In Boulder, us-Colorado State, USA region, the lowest sunshine duration occurs in December 2025, with an average sunshine duration of about 6.9 hours.
The highest sunshine duration occurs in July 2025, with a maximum sunshine duration of up to 12.8 hours.
Based on historical data, the average sunshine duration in January is 7.3 hours, February is 7.9 hours, March is 9.8 hours, April is 10.4 hours, May is 11.5 hours, June is 12.7 hours, July is 12.8 hours, August is 11.8 hours, September is 10.8 hours, October is 9.1 hours, November is 7.9 hours, December is 6.9 hours.
Precipitation Analysis
In Boulder, us-Colorado State, USA region, the lowest precipitation occurs in November 2025, with an average precipitation of about 0.1 mm.
The highest precipitation occurs in May 2025, with a maximum precipitation of up to 2.7 mm.
Based on historical data, the average precipitation in January is 0.8 mm, February is 1 mm, March is 1.8 mm, April is 1.4 mm, May is 2.7 mm, June is 1.2 mm, July is 0.5 mm, August is 1.5 mm, September is 1.3 mm, October is 0.9 mm, November is 0.1 mm, December is 0.8 mm.