Weather on April 17
Longmont, CO
55 Years of Data
Avg High
63°F
Avg Low
34°F
Warmest
1985
64°F avg
Coldest
2020
20°F avg
About This Date
April 17th in Longmont, CO typically brings mild spring weather, with average highs around 63°F and lows near 34°F — a 29°F daily swing. Over 55 years of records, the warmest April 17th was in 1985 (64°F average), while the coldest was 2020 (20°F) — a 44°F range across recorded history. Precipitation has occurred on 25% of recorded April 17th dates, with snow falling 11% of the time (heaviest snowfall: 11.8"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for April 17th in Longmont, CO? Great weather for outdoor activities.
Cooling Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 47° | 63° | — | — |
| 2024 | 70° | 47° | 58° | — | — |
| 2023 | 67° | 33° | 50° | — | — |
| 2022 | 58° | 27° | 42° | — | — |
| 2021 | 39° | 28° | 34° | — | — |
| 2020coldest | 30° | 11° | 20° | 0.71" | 1.3" |
| 2019 | 66° | 41° | 54° | — | — |
| 2018 | 67° | 37° | 52° | — | — |
| 2017 | 76° | 36° | 56° | — | — |
| 2016 | 39° | 30° | 35° | 1.8" | 11.8" |
| 2015 | 49° | 32° | 40° | 4.98" | 0.6" |
| 2014 | 64° | 30° | 47° | — | — |
| 2013 | 33° | 22° | 27° | 1.19" | 5.5" |
| 2012 | 69° | 37° | 53° | — | — |
| 2011 | 69° | 39° | 54° | — | — |
| 2010 | 54° | 41° | 47° | 0.1" | — |
| 2009 | 39° | 32° | 36° | 6.58" | 5.2" |
| 2008 | 50° | 28° | 39° | 0.38" | 1.8" |
| 2007 | 56° | 40° | 48° | 0.74" | — |
| 2006 | 82° | 46° | 64° | — | — |
| 2005 | 72° | 43° | 57° | — | — |
| 2004 | 76° | 39° | 57° | — | — |
| 2003 | 65° | 38° | 51° | — | — |
| 2002 | 66° | 31° | 48° | — | — |
| 2001 | 67° | 35° | 51° | — | — |
| 2000 | 65° | 28° | 46° | — | — |
| 1999 | 42° | 14° | 28° | — | — |
| 1998 | 42° | 22° | 32° | — | — |
| 1997 | 67° | 25° | 46° | — | — |
| 1996 | 77° | 38° | 57° | — | — |
| 1995 | 53° | 34° | 43° | 0.13" | — |
| 1994 | 81° | 37° | 59° | — | — |
| 1993 | 59° | 30° | 45° | 0.03" | — |
| 1992 | 53° | 34° | 43° | 1.07" | — |
| 1991 | 55° | 32° | 44° | — | — |
| 1990 | 55° | 31° | 43° | 0.1" | — |
| 1989 | 74° | 30° | 52° | — | — |
| 1988 | 72° | 42° | 57° | — | — |
| 1987 | 82° | 38° | 60° | — | — |
| 1986 | 51° | 37° | 44° | 0.48" | — |
| 1985warmest | 79° | 49° | 64° | — | — |
| 1984 | 70° | 32° | 51° | — | — |
| 1983 | 60° | 28° | 44° | — | — |
| 1982 | 52° | 23° | 37° | — | — |
| 1981 | 77° | 43° | 60° | — | — |
| 1980 | 61° | 25° | 43° | — | — |
| 1979 | 79° | 45° | 62° | — | — |
| 1978 | 62° | 37° | 50° | — | — |
| 1977 | 65° | 41° | 53° | — | — |
| 1976 | 68° | 39° | 54° | 0.03" | — |
| 1975 | 75° | 36° | 55° | — | — |
| 1974 | 62° | 32° | 47° | — | — |
| 1973 | 61° | 33° | 47° | — | — |
| 1972 | 74° | 35° | 54° | — | — |
| 1971 | 72° | 35° | 53° | — | — |
55 years of data from LONGMONT 2 ESE