Lyons, Colorado Weather
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Weather Forecast for Lyons, Colorado : Boulder County
Issued: 9:44 am MDT Sep 15, 2025 Latitude: 40.2247075 Longitude: -105.271378 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Sunny on This Afternoon Cloudy on Tonight 60% chance of thunderstorms on Tuesday 70% chance of thunderstorms on Wednesday 30% chance of thunderstorms on Thursday Sunny on Friday Sunny on Saturday 10% chance of thunderstorms on Sunday
High: 82°F Low: 50°F High: 76°F High: 67°F High: 70°F High: 75°F High: 79°F High: 80°F
Low: 47°F Low: 44°F Low: 43°F Low: 46°F Low: 50°F  
Mostly Sunny Cloudy Thunderstorms Thunderstorms Thunderstorms Sunny Sunny Thunderstorms
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Current Conditions at
FT COLLINS - (KFNL)
81°
Clear
as of 11:56 AM MDST
Rel. Humidity: 26%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
5 MPH
Cloud Level(s): Clear
Current Conditions at
BROOMFIELD - (KBJC)
81°
Mostly Clear
as of 11:45 AM MDST
Rel. Humidity: 15%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
12 MPH
120° Southeast
Cloud Level(s): Few at 12000ft
Current Conditions at
GREELEY - (KGXY)
81°
Clear
as of 11:56 AM MDST
Rel. Humidity: 26%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
7 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
DENVER INTL - (KDEN)
79°
Mostly Clear
as of 11:53 AM MDST
Rel. Humidity: 19%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
6 MPH
200° South
Cloud Level(s): Few at 9000ft, Few at 12000ft, Few at 22000ft
Mostly Sunny on This Afternoon This Afternoon... Mostly sunny, with a high near 82. South southeast wind 5 to 7 mph.
Cloudy on Tonight Tonight... Partly cloudy, with a low around 50. East northeast wind 5 to 7 mph becoming west in the evening.
60% chance of thunderstorms Tuesday Tuesday... Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. Light and variable wind becoming east northeast 5 to 7 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
70% chance of thunderstorms Tuesday Night Tuesday Night... Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 47. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.
70% chance of thunderstorms Wednesday Wednesday... A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 67. Calm wind becoming northeast 5 to 7 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 70%.
30% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.
30% chance of thunderstorms Thursday Thursday... A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70. Chance of precipitation is 30%.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 43.
Sunny on Friday Friday... Sunny, with a high near 75.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 46.
Sunny on Saturday Saturday... Sunny, with a high near 79.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 50.
10% chance of thunderstorms Sunday Sunday... A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Current Radar Image


Sun Almanac for Lyons, Colorado
Sunrise: 06:43 AM
Sunset: 7:10 PM
Civil Sunrise:06:15 AM
Civil Sunset: 7:37 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 8:09 PM
Astro Sunrise: 05:10 AM
Astro Sunset: 8:42 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.