Altona, CO weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Altona now
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Altona weather by the hour
Altona weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Altona.
This week in Altona
Sunrise, sunset and moon in Altona
What is the weather usually like in Altona?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 88°F average high
- Decembercoldest month · 21°F average low
- 21.2 inprecipitation per year · 539 mm
- 92.8 insnowfall per year · 236 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Altona: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station BOULDER, CO US (USC00050848), adjusted for the elevation of Altona.
Altona weather month by month
Sunrise and sunset in Altona through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:19 AM | 5:01 PM | 9 h 41 min |
| February | 6:52 AM | 5:38 PM | 10 h 46 min |
| March | 7:10 AM | 7:09 PM | 11 h 58 min |
| April | 6:21 AM | 7:41 PM | 13 h 20 min |
| May | 5:43 AM | 8:11 PM | 14 h 27 min |
| June | 5:29 AM | 8:33 PM | 15 h 3 min |
| July | 5:43 AM | 8:31 PM | 14 h 47 min |
| August | 6:11 AM | 7:59 PM | 13 h 48 min |
| September | 6:41 AM | 7:11 PM | 12 h 30 min |
| October | 7:10 AM | 6:23 PM | 11 h 12 min |
| November | 6:45 AM | 4:46 PM | 10 h 0 min |
| December | 7:14 AM | 4:38 PM | 9 h 23 min |
Times for the 15th of each month, local time (America/Denver).
What is the weather like in Altona?
Altona has a humid subtropical climate. The warmest month is July, with an average high of 88°F (31°C), and the coldest is December, with average lows of 21°F (-6°C).
It gets about 21.2 inches (539 mm) of precipitation a year. The wettest month is May and the driest is December. Snow is common: about 93 inches fall in an average year.
The best time to visit Altona is June to September. At 5,600 ft of elevation, nights are cool even in summer. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Altona
Weather in towns near Altona
Questions about the weather in Altona
What is the hottest month in Altona?
July, with an average high of 88°F (31°C).
What is the coldest month in Altona?
December, with an average low of 21°F (-6°C).
How much does it rain in Altona?
About 21.2 inches (539 mm) a year; the wettest month is May.
Does it snow in Altona?
Yes, about 93 inches of snow fall in an average year.
When is the best time to visit Altona?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Altona have?
Humid subtropical (Köppen Cfa).
What is the weather like in Altona in November?
Highs average 54°F and lows 28°F, with about 1.2 inches of precipitation.
What time is sunrise in Altona?
Around 6:45 AM in mid-November, and sunset around 4:46 PM. Today’s exact times are shown above.
Where does this Altona weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Altona.
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