Weather on June 17
Longmont, CO
55 Years of Data
About This Date
June 17th in Longmont, CO typically brings warm summer weather, with average highs around 83°F and lows near 52°F — a 31°F daily swing. Over 55 years of records, the warmest June 17th was in 2021 (79°F average), while the coldest was 2000 (46°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 25% of June 17th dates historically, with the wettest June 17th recording 1.75" of rain. The last decade has been 11.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 11.1°F warmer on this date compared to 20-30 years ago.
Planning for June 17th in Longmont, CO? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 59° | 76° | 0.1" | — |
| 2024 | 85° | 57° | 71° | — | — |
| 2023 | 67° | 47° | 57° | 1.75" | — |
| 2022 | 94° | 62° | 78° | — | — |
| 2021warmest | 98° | 60° | 79° | — | — |
| 2020 | 95° | 55° | 75° | — | — |
| 2019 | 80° | 55° | 68° | 0.1" | — |
| 2018 | 85° | 59° | 72° | — | — |
| 2017 | 90° | 63° | 76° | — | — |
| 2016 | 89° | 56° | 72° | — | — |
| 2015 | 81° | 52° | 66° | — | — |
| 2014 | 86° | 49° | 67° | — | — |
| 2013 | 80° | 51° | 66° | — | — |
| 2012 | 97° | 53° | 75° | — | — |
| 2011 | 85° | 53° | 69° | 0.03" | — |
| 2010 | 85° | 55° | 70° | — | — |
| 2009 | 78° | 50° | 64° | — | — |
| 2008 | 89° | 50° | 70° | — | — |
| 2007 | 96° | 54° | 75° | — | — |
| 2006 | 87° | 53° | 70° | — | — |
| 2005 | 86° | 53° | 70° | — | — |
| 2004 | 56° | 50° | 53° | 0.48" | — |
| 2003 | 85° | 55° | 70° | 0.08" | — |
| 2002 | 87° | 47° | 67° | — | — |
| 2001 | 84° | 55° | 70° | — | — |
| 2000coldest | 54° | 39° | 46° | 0.69" | — |
| 1999 | 60° | 43° | 51° | 0.05" | — |
| 1998 | 75° | 43° | 59° | — | — |
| 1997 | 77° | 46° | 62° | 0.03" | — |
| 1996 | 83° | 47° | 65° | 0.91" | — |
| 1995 | 89° | 59° | 74° | — | — |
| 1994 | 84° | 51° | 68° | — | — |
| 1993 | 85° | 50° | 67° | 0.36" | — |
| 1992 | 80° | 53° | 67° | — | — |
| 1991 | 85° | 48° | 66° | — | — |
| 1990 | 84° | 44° | 64° | — | — |
| 1989 | 97° | 59° | 78° | — | — |
| 1988 | 87° | 51° | 69° | — | — |
| 1987 | 95° | 55° | 75° | — | — |
| 1986 | 91° | 59° | 75° | — | — |
| 1985 | 74° | 56° | 65° | — | — |
| 1984 | 84° | 51° | 68° | — | — |
| 1983 | 85° | 52° | 68° | — | — |
| 1982 | 79° | 47° | 63° | 0.03" | — |
| 1981 | 83° | 54° | 68° | — | — |
| 1980 | 77° | 55° | 66° | — | — |
| 1979 | 82° | 58° | 70° | — | — |
| 1978 | 80° | 50° | 65° | — | — |
| 1977 | 85° | 56° | 70° | — | — |
| 1976 | 87° | 50° | 69° | — | — |
| 1975 | 69° | 44° | 57° | 0.05" | — |
| 1974 | 80° | 53° | 67° | — | — |
| 1973 | 80° | 43° | 61° | — | — |
| 1972 | 85° | 52° | 68° | 0.03" | — |
| 1971 | 92° | 54° | 73° | — | — |
Longmont, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Longmont, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Longmont, CO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Longmont, CO
Longmont, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.