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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 20, 2025 Latitude: 40.1338744 Longitude: -105.2827677 View on Google Maps

MouseOver for Detail Forecast
Overnight Friday Saturday Sunday Monday Tuesday Wednesday Thanksgiving Day
70% chance of rain on Overnight 50% chance of rain on Friday Sunny on Saturday 20% chance of rain on Sunday Mostly Sunny on Monday 10% chance of snow on Tuesday Mostly Sunny on Wednesday 20% chance of rain & snow on Thanksgiving Day
Low: 38°F High: 48°F High: 58°F High: 53°F High: 53°F High: 41°F High: 41°F High: 43°F
Low: 33°F Low: 33°F Low: 33°F Low: 26°F Low: 20°F Low: 25°F  
Rain Rain Sunny Rain Mostly Sunny Snow Mostly Sunny Rain & Snow
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Current Conditions at
BROOMFIELD - (KBJC)
39°
Cloudy
as of 1:35 AM MST
Rel. Humidity: 93%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: LIFR
Wind Data
5 MPH
350° North
Cloud Level(s): Broken at 400ft, Broken at 800ft, Solid Overcast at 1500ft
Current Conditions at
FT COLLINS - (KFNL)
41°
Cloudy
as of 12:56 AM MST
Rel. Humidity: 93%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 600ft
Current Conditions at
BUCKLEY ANGB ARPT - (KBKF)
39°
Cloudy
Light Rain Mist
as of 12:58 AM MST
Rel. Humidity: 100%
Dew Point: 39°F
Visibility: 1 1/2 Miles
Pressure: 29.98 in.
Flight Rule: LIFR
Wind Data
5 MPH
0° North
Cloud Level(s): Solid Overcast at 200ft
70% chance of rain Overnight Overnight... Showers likely. Cloudy, with a steady temperature around 38. Calm wind. Chance of precipitation is 70%.
50% chance of rain Friday Friday... A 50 percent chance of showers, mainly before 11am. Cloudy, with a high near 48. Calm wind becoming north northeast around 5 mph.
Mostly Clear on Friday Night Friday Night... Mostly cloudy, then gradually becoming mostly clear, with a low around 33. Calm wind becoming west around 6 mph in the evening.
Sunny on Saturday Saturday... Sunny, with a high near 58. West wind around 6 mph becoming calm in the morning.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 33. Calm wind.
20% chance of rain Sunday Sunday... A 20 percent chance of showers after 11am. Mostly cloudy, with a high near 53.
40% chance of rain Sunday Night Sunday Night... A 40 percent chance of showers. Mostly cloudy, with a low around 33.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 53.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 26.
10% chance of snow Tuesday Tuesday... A slight chance of snow showers after 11am. Mostly sunny, with a high near 41.
10% chance of snow Tuesday Night Tuesday Night... A slight chance of snow showers. Partly cloudy, with a low around 20.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 41.
10% chance of rain & snow Wednesday Night Wednesday Night... A slight chance of rain and snow showers. Mostly cloudy, with a low around 25.
20% chance of rain & snow Thanksgiving Day Thanksgiving Day... A chance of rain and snow showers. Partly sunny, with a high near 43.
Current Radar Image


Sun Almanac for Altona, Colorado
Sunrise: 06:54 AM
Sunset: 4:40 PM
Civil Sunrise:06:25 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 05:51 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:19 AM
Astro Sunset: 6:15 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.