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Boulder, CO Weather on May 25
May 25th in Boulder, CO typically brings pleasant spring weather, with average highs around 72°F and lows near 45°F — a 27°F daily swing. Over 55 years of records, the warmest May 25th was in 2013 (69°F average), while the coldest was 1995 (46°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 25th dates historically, with the wettest May 25th recording 4.85" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
What to Expect on May 25
Planning for May 25th in Boulder, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
May 25 Weather Records for Boulder
- •The all-time record high for May 25th in Boulder, CO is 87°F, set in 2013.
- •The coldest May 25th on record dropped to 37°F in 2022.
Frequently Asked Questions
What was the warmest May 25 ever in Boulder?
The warmest May 25 in Boulder, CO reached 87°F in 2013. That is 15°F above the long-term average high of 72°F.
What was the coldest May 25 ever in Boulder?
The coldest May 25 in Boulder, CO dropped to 37°F in 2022. That is 8°F below the long-term average low of 45°F.
What is the average temperature on May 25 in Boulder?
On May 25, Boulder averages a high of 72°F and a low of 45°F based on 55 years of NOAA weather observations from BOULDER MUNI AP.
How many years of weather data are available for May 25 in Boulder?
We have 55 years of weather records for May 25 in Boulder, 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 Boulder
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 55°F | 50°F | -- | -- |
| 2024 | 73°F | 48°F | -- | -- |
| 2023 | 72°F | 50°F | -- | -- |
| 2022 | 70°F | 37°F | -- | -- |
| 2021 | 77°F | 48°F | 0" | -- |
| 2020 | 63°F | 41°F | -- | -- |
| 2019 | 73°F | 45°F | -- | -- |
| 2018 | 86°F | 52°F | -- | -- |
| 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" | -- |
| 2009 | 60°F | 45°F | -- | -- |
| 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 | 59°F | 42°F | 0.38" | -- |
| 2003 | 70°F | 48°F | 0" | -- |
| 2002 | 71°F | 39°F | 0" | -- |
| 2001 | 73°F | 38°F | 0" | -- |
| 2000 | 75°F | 46°F | 0.46" | -- |
| 1999 | 64°F | 51°F | 0.03" | -- |
| 1998 | 71°F | 40°F | 0" | -- |
| 1997 | 67°F | 48°F | 0.08" | -- |
| 1996 | 53°F | 44°F | 4.85" | -- |
| 1995 | 52°F | 41°F | 1.85" | -- |
| 1994 | 74°F | 43°F | 1.07" | -- |
| 1993 | 61°F | 45°F | 0.46" | -- |
| 1992 | 71°F | 41°F | 1.32" | -- |
| 1991 | 76°F | 43°F | 0.05" | -- |
| 1990 | 78°F | 50°F | 0" | -- |
| 1989 | 73°F | 49°F | 0" | -- |
| 1988 | 78°F | 46°F | 0" | -- |
| 1987 | 74°F | 41°F | 0.1" | -- |
| 1986 | 70°F | 41°F | 0" | -- |
| 1985 | 80°F | 53°F | 0" | -- |
| 1984 | 69°F | 46°F | 0.41" | -- |
| 1983 | 75°F | 49°F | 0" | -- |
| 1982 | 58°F | 39°F | 0.76" | -- |
| 1981 | 75°F | 48°F | 0.18" | -- |
| 1980 | 78°F | 41°F | 0" | -- |
| 1979 | 77°F | 51°F | 0" | -- |
| 1978 | 85°F | 43°F | 0.18" | -- |
| 1977 | 79°F | 53°F | 0" | -- |
| 1976 | 69°F | 40°F | 0.33" | -- |
| 1975 | 75°F | 49°F | 0" | -- |
| 1974 | 77°F | 45°F | 0" | -- |
| 1973 | 76°F | 46°F | 0.36" | -- |
| 1972 | 80°F | 47°F | 0" | -- |
| 1971 | 75°F | 42°F | 0" | -- |
Based on 55 years of data from NOAA station: BOULDER MUNI AP
Monthly Climate Averages
Historical temperature and precipitation averages for Boulder, CO, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.