Joshua Tree National Park / Public domain
Longmont, CO Weather on April 12
April 12th in Longmont, CO typically brings mild spring weather, with average highs around 62°F and lows near 32°F — a 30°F daily swing. Over 55 years of records, the warmest April 12th was in 1982 (65°F average), while the coldest was 1997 (16°F) — a 49°F range across recorded history. Precipitation has occurred on 20% of recorded April 12th dates, with snow falling 7% of the time (heaviest snowfall: 5.1"). The last decade has been 7.4°F warmer on this date compared to 20-30 years ago.
What to Expect on April 12
Planning for April 12th in Longmont, CO? Great weather for outdoor activities.
April 12 Weather Records for Longmont
- •The all-time record high for April 12th in Longmont, CO is 86°F, set in 2025.
- •The coldest April 12th on record dropped to 6°F in 1997.
- •A freeze (32°F or below) has occurred on April 12th in 28 of the last 55 years.
Frequently Asked Questions
What was the warmest April 12 ever in Longmont?
The warmest April 12 in Longmont, CO reached 86°F in 2025. That is 24°F above the long-term average high of 62°F.
What was the coldest April 12 ever in Longmont?
The coldest April 12 in Longmont, CO dropped to 6°F in 1997. That is 26°F below the long-term average low of 32°F.
What is the average temperature on April 12 in Longmont?
On April 12, Longmont averages a high of 62°F and a low of 32°F based on 55 years of NOAA weather observations from LONGMONT 2 ESE.
How many years of weather data are available for April 12 in Longmont?
We have 55 years of weather records for April 12 in Longmont, CO, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 12 Weather History in Longmont
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 86°F | 41°F | 0" | -- |
| 2024 | 65°F | 34°F | 0" | -- |
| 2023 | 81°F | 36°F | 0" | -- |
| 2022 | 67°F | 30°F | 0" | -- |
| 2021 | 60°F | 28°F | 0" | -- |
| 2020 | 73°F | 21°F | 1.07" | 5.1" |
| 2019 | 42°F | 21°F | 0" | -- |
| 2018 | 82°F | 44°F | 0" | -- |
| 2017 | 73°F | 36°F | 0" | -- |
| 2016 | 69°F | 36°F | 0" | -- |
| 2015 | 69°F | 47°F | 0" | -- |
| 2014 | 73°F | 46°F | 0" | -- |
| 2013 | 59°F | 33°F | 0" | -- |
| 2012 | 66°F | 43°F | 0.53" | -- |
| 2011 | 65°F | 33°F | 0" | -- |
| 2010 | 74°F | 33°F | 0" | -- |
| 2009 | 54°F | 37°F | 0.2" | -- |
| 2008 | 53°F | 27°F | 0" | -- |
| 2007 | 45°F | 25°F | 0" | -- |
| 2006 | 75°F | 38°F | 0" | -- |
| 2005 | 58°F | 35°F | 0" | -- |
| 2004 | 51°F | 27°F | 0.3" | 1" |
| 2003 | 80°F | 40°F | 0" | -- |
| 2002 | 70°F | 30°F | 0" | -- |
| 2001 | 47°F | 27°F | 0" | -- |
| 2000 | 67°F | 29°F | 0" | -- |
| 1999 | 62°F | 22°F | 0" | -- |
| 1998 | 83°F | 26°F | 0" | -- |
| 1997 | 26°F | 6°F | 0" | -- |
| 1996 | 62°F | 29°F | 0.23" | -- |
| 1995 | 39°F | 20°F | 0" | -- |
| 1994 | 43°F | 23°F | 0" | -- |
| 1993 | 64°F | 32°F | 0.3" | -- |
| 1992 | 66°F | 43°F | 0" | -- |
| 1991 | 44°F | 31°F | 0.89" | 3" |
| 1990 | 51°F | 32°F | 0" | -- |
| 1989 | 45°F | 22°F | 0" | -- |
| 1988 | 69°F | 26°F | 0" | -- |
| 1987 | 69°F | 32°F | 0.89" | -- |
| 1986 | 63°F | 39°F | 0" | -- |
| 1985 | 74°F | 43°F | 0" | -- |
| 1984 | 55°F | 28°F | 0" | -- |
| 1983 | 62°F | 33°F | 0" | -- |
| 1982 | 82°F | 49°F | 0" | -- |
| 1981 | 75°F | 37°F | 0" | -- |
| 1980 | 44°F | 24°F | 0" | -- |
| 1979 | 39°F | 28°F | 0.13" | -- |
| 1978 | 71°F | 33°F | 0" | -- |
| 1977 | 54°F | 39°F | 0.51" | -- |
| 1976 | 71°F | 37°F | 0" | -- |
| 1975 | 33°F | 25°F | 1.5" | 3" |
| 1974 | 52°F | 33°F | 0" | -- |
| 1973 | 57°F | 31°F | 0" | -- |
| 1972 | 77°F | 44°F | 0" | -- |
| 1971 | 62°F | 32°F | 0" | -- |
Based on 55 years of data from NOAA station: LONGMONT 2 ESE
Monthly Climate Averages
Historical temperature and precipitation averages for Longmont, CO, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.