The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 10 to 400 PM Tuesday August 11 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone concentrations in the Unhealthy for Sensitive Groups category are possible both Monday and Tuesday during the afternoon and evenings, mainly in and near the Denver metro area. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Tuesday, August 11, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
Local weather forecast
Weather in Granby, CO
Updated 2026-08-11 11:00 local time · ZIP codes 80446

Now67°F
Sunny
High / Low80° / 45°
Rain chance57%
Wind6 mph
Weather alerts
1Active alerts
Hourly
Next hours
Now
67°1% rain
67°1% rain12 PM
78°2% rain
78°2% rain1 PM
79°3% rain
79°3% rain2 PM
80°3% rain
80°3% rain3 PM
79°8% rain
79°8% rain4 PM
79°8% rain
79°8% rain5 PM
79°7% rain
79°7% rain6 PM
77°3% rain
77°3% rain7 PM
72°17% rain
72°17% rain8 PM
56°39% rain
56°39% rain9 PM
51°25% rain
51°25% rain10 PM
48°32% rain
48°32% rainForecast
3-day weather forecast
Today2026-08-11

80° 45°Sunny
Rain 57%Gust 8 mph
Tomorrow2026-08-12

79° 44°Sunny
Rain 63%Gust 13 mph
Thursday2026-08-13

75° 43°Patchy rain nearby
Rain 76%Gust 6 mph
Conditions
Weather details
Feels like67°F
Humidity43%
Pressure30.39 inHg
Visibility10 mi
Wind6 mph W
Wind gusts7 mph
Precipitation0.00 in
UV index6
Daylight
Sunrise, sunset and moon
Sunrise06:11 AM
Sunset08:06 PM
Moonrise04:16 AM
Moon phaseNew Moon
Practical guide
Weather insights for today
Umbrella may help
There is a moderate rain chance, peaking near 39%.
Light layers should work
It feels like 67°F with winds near 6 mph.
Best window: 11 AM
67°F, 1% rain chance and 6 mph wind.
Allow a little extra driving time
Visibility is around 10 mi; gusts may reach 15 mph.
Run with a few weather adjustments
Current temperature is 67°F, wind 6 mph, rain chance up to 39%.
High UV protection needed
UV index is 6. Sunscreen, shade and protective clothing are recommended.
Granby weather today
Sunny and 67°F in Granby, CO. Today's high is 80°F with a 57% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 43%, pressure is 30.39 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Granby
Sunrise is at 06:11 AM and sunset is at 08:06 PM. Tomorrow's forecast calls for Sunny with a high near 79°F and a low near 44°F. The maximum rain chance is 63%.
Nearby
Weather near Granby
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