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Altona, Colorado Weather Forecast
Altona, Colorado Weather
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Weather Forecast for Altona, Colorado : Boulder County
Issued: 2:06 pm MST Nov 18, 2025 Latitude: 40.1338744 Longitude: -105.2827677 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Cloudy on Tonight Mostly Sunny on Wednesday 20% chance of rain on Thursday 60% chance of rain & snow on Friday Sunny on Saturday Sunny on Sunday Mostly Sunny on Monday 10% chance of rain & snow on Tuesday
Low: 35°F High: 63°F High: 52°F High: 47°F High: 54°F High: 56°F High: 54°F High: 49°F
Low: 35°F Low: 34°F Low: 32°F Low: 31°F Low: 32°F Low: 31°F  
Cloudy Mostly Sunny Rain Rain & Snow Sunny Sunny Mostly Sunny Rain & Snow
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Current Conditions at
BROOMFIELD - (KBJC)
50°
Feels like 44°F
Clear
as of 6:50 PM MST
Rel. Humidity: 39%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
16 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
FT COLLINS - (KFNL)
50°
Clear
as of 6:56 PM MST
Rel. Humidity: 43%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
8 MPH
070° East
Cloud Level(s): Clear
Current Conditions at
BUCKLEY ANGB ARPT - (KBKF)
50°
Feels like 43°F
Partly Cloudy
as of 6:58 PM MST
Rel. Humidity: 34%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 25 MPH
190° South
Cloud Level(s): Few at 13000ft, Scattered at 22000ft
Cloudy on Tonight Tonight... Partly cloudy, with a low around 35. West wind around 5 mph.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 63. West wind around 6 mph becoming light and variable in the afternoon.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 35. Light west wind.

20% chance of rain Thursday Thursday... A 20 percent chance of showers after 11am. Mostly cloudy, with a high near 52. Calm wind becoming east northeast around 6 mph.

60% chance of rain & snow Thursday Night Thursday Night... Rain showers likely before 2am, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 34. Calm wind. Chance of precipitation is 60%.

60% chance of rain & snow Friday Friday... Rain likely, possibly mixed with snow showers, mainly before 11am. Cloudy, with a high near 47. Chance of precipitation is 60%.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 32.

Sunny on Saturday Saturday... Sunny, with a high near 54.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 31.

Sunny on Sunday Sunday... Sunny, with a high near 56.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 32.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 54.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 31.

10% chance of rain & snow Tuesday Tuesday... A slight chance of rain and snow showers. Mostly sunny, with a high near 49.

Current Radar Image


Sun Almanac for Altona, Colorado
Sunrise: 06:51 AM
Sunset: 4:42 PM
Civil Sunrise:06:21 AM
Civil Sunset: 5:11 PM
Nautical Sunrise: 05:48 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 05:16 AM
Astro Sunset: 6:17 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.