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Longmont, CO Weather on May 25
May 25th in Longmont, CO typically brings pleasant spring weather, with average highs around 73°F and lows near 45°F — a 28°F daily swing. Over 54 years of records, the warmest May 25th was in 1977 (69°F average), while the coldest was 1995 (43°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 37% of May 25th dates historically, with the wettest May 25th recording 2.79" of rain. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on May 25
Planning for May 25th in Longmont, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
May 25 Weather Records for Longmont
- •The all-time record high for May 25th in Longmont, CO is 87°F, set in 2013.
- •The coldest May 25th on record dropped to 33°F in 2001.
Frequently Asked Questions
What was the warmest May 25 ever in Longmont?
The warmest May 25 in Longmont, CO reached 87°F in 2013. That is 14°F above the long-term average high of 73°F.
What was the coldest May 25 ever in Longmont?
The coldest May 25 in Longmont, CO dropped to 33°F in 2001. That is 12°F below the long-term average low of 45°F.
What is the average temperature on May 25 in Longmont?
On May 25, Longmont averages a high of 73°F and a low of 45°F based on 54 years of NOAA weather observations from LONGMONT 2 ESE.
How many years of weather data are available for May 25 in Longmont?
We have 54 years of weather records for May 25 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.
May 25 Weather History in Longmont
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 62°F | 50°F | 0.38" | -- |
| 2024 | 74°F | 43°F | 0" | -- |
| 2023 | 72°F | 49°F | 0.05" | -- |
| 2022 | 56°F | 37°F | 0" | -- |
| 2021 | 77°F | 45°F | 0" | -- |
| 2020 | 61°F | 40°F | 1.78" | -- |
| 2019 | 74°F | 39°F | 0" | -- |
| 2018 | 86°F | 50°F | 0" | -- |
| 2017 | 74°F | 56°F | 0" | -- |
| 2016 | 72°F | 42°F | 0" | -- |
| 2015 | 66°F | 38°F | 0.08" | -- |
| 2014 | 69°F | 46°F | 1.02" | -- |
| 2013 | 87°F | 50°F | 0" | -- |
| 2012 | 70°F | 45°F | 0" | -- |
| 2011 | 65°F | 42°F | 0" | -- |
| 2010 | 71°F | 45°F | 0" | -- |
| 2008 | 76°F | 51°F | 0" | -- |
| 2007 | 79°F | 38°F | 0" | -- |
| 2006 | 86°F | 50°F | 0" | -- |
| 2005 | 74°F | 45°F | 0" | -- |
| 2004 | 72°F | 43°F | 0.38" | -- |
| 2003 | 75°F | 54°F | 0" | -- |
| 2002 | 53°F | 34°F | 0.13" | -- |
| 2001 | 79°F | 33°F | 0" | -- |
| 2000 | 79°F | 48°F | 0.66" | -- |
| 1999 | 73°F | 48°F | 0" | -- |
| 1998 | 74°F | 57°F | 0.05" | -- |
| 1997 | 71°F | 45°F | 0.18" | -- |
| 1996 | 55°F | 44°F | 2.79" | -- |
| 1995 | 48°F | 38°F | 0.89" | -- |
| 1994 | 78°F | 40°F | 0" | -- |
| 1993 | 60°F | 43°F | 0.64" | -- |
| 1992 | 77°F | 43°F | 0.81" | -- |
| 1991 | 70°F | 45°F | 0.13" | -- |
| 1990 | 81°F | 42°F | 0" | -- |
| 1989 | 79°F | 49°F | 0" | -- |
| 1988 | 77°F | 47°F | 0" | -- |
| 1987 | 61°F | 43°F | 1.24" | -- |
| 1986 | 71°F | 44°F | 0" | -- |
| 1985 | 83°F | 47°F | 0" | -- |
| 1984 | 83°F | 44°F | 0.66" | -- |
| 1983 | 85°F | 49°F | 0" | -- |
| 1982 | 53°F | 39°F | 0.36" | -- |
| 1981 | 77°F | 47°F | 0.1" | -- |
| 1980 | 82°F | 41°F | 0" | -- |
| 1979 | 77°F | 51°F | 0" | -- |
| 1978 | 86°F | 46°F | 0" | -- |
| 1977 | 86°F | 52°F | 0" | -- |
| 1976 | 64°F | 46°F | 0" | -- |
| 1975 | 78°F | 45°F | 0" | -- |
| 1974 | 82°F | 47°F | 0" | -- |
| 1973 | 66°F | 47°F | 0.1" | -- |
| 1972 | 81°F | 44°F | 0" | -- |
| 1971 | 74°F | 41°F | 0" | -- |
Based on 54 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.