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Altona, Colorado Weather Forecast
Altona, Colorado Weather
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Weather Forecast for Altona, Colorado : Boulder County
Issued: 1:10 am MST Dec 1, 2025 Latitude: 40.1338744 Longitude: -105.2827677 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Cloudy on Overnight Sunny on Monday Partly Sunny on Tuesday 80% chance of snow on Wednesday Sunny on Thursday Partly Sunny on Friday 10% chance of rain & snow on Saturday Mostly Sunny on Sunday
Low: 11°F High: 37°F High: 45°F High: 30°F High: 38°F High: 42°F High: 47°F High: 44°F
Low: 25 °F Low: 22°F Low: 12°F Low: 20°F Low: 27°F Low: 25°F  
Cloudy Sunny Partly Sunny Snow Sunny Partly Sunny Rain & Snow Mostly Sunny
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Current Conditions at
BROOMFIELD - (KBJC)
16°
Clear
as of 2:15 AM MST
Rel. Humidity: 85%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
6 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
FT COLLINS - (KFNL)
12°
Clear
as of 1:56 AM MST
Rel. Humidity: 85%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
DENVER INTL - (KDEN)
18°
Feels like 6°F
Mostly Cloudy
as of 1:53 AM MST
Rel. Humidity: 78%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
9 MPH
280° West
Cloud Level(s): Broken at 16000ft, Broken at 25000ft
Cloudy on Overnight Overnight... Partly cloudy, with a low around 11. Light west wind.
Sunny on Monday Monday... Sunny, with a high near 37. West wind 5 to 8 mph.
Increasing Clouds on Monday Night Monday Night... Increasing clouds, with a temperature rising to around 25 by 3am. West wind 8 to 11 mph, with gusts as high as 18 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 45. West wind 7 to 13 mph, with gusts as high as 21 mph.
60% chance of snow Tuesday Night Tuesday Night... Snow likely, mainly after 2am. Mostly cloudy, with a low around 22. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
80% chance of snow Wednesday Wednesday... Snow, mainly before 11am. High near 30. Chance of precipitation is 80%.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 12.
Sunny on Thursday Thursday... Sunny, with a high near 38.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 20.
Partly Sunny on Friday Friday... Partly sunny, with a high near 42.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 27.
10% chance of rain & snow Saturday Saturday... A slight chance of rain and snow. Mostly sunny, with a high near 47.
20% chance of rain & snow Saturday Night Saturday Night... A chance of rain and snow. Partly cloudy, with a low around 25.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 44.
Sun Almanac for Altona, Colorado
Sunrise: 07:05 AM
Sunset: 4:36 PM
Civil Sunrise:06:35 AM
Civil Sunset: 5:06 PM
Nautical Sunrise: 06:01 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:28 AM
Astro Sunset: 6:12 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.