Boulder County Weather in April
Average highs run from 61°F on April 1 to 66°F on April 30, and lows from 32°F to 38°F. Normal precipitation for the month is 3.05 in over about 10 wet days.
April day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
April at a glance
- Average high
- 63°F
- Average low
- 35°F
- Precipitation
- 3.05 in
- Snowfall
- 14.7 in
- Record high
- 88°FApr 21, 1989
- Record low
- -3°FApr 2, 1975
- Chance of a freeze
- 100%
- Daylight
- 12 h 41 min to 13 h 54 min
- Cloud cover
- 71%
- Humidity
- 63%
- Dew point
- 21°F
- Wind
- 8.3 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Apr 1 | 61°F | 32°F | 81°F 2012 | 7°F 1936 | 30% | 19% |
| Apr 2 | 61°F | 32°F | 82°F 2011 | -3°F 1975 | 31% | 18% |
| Apr 3 | 61°F | 33°F | 78°F 2021 | 12°F 1945 | 31% | 18% |
| Apr 4 | 61°F | 33°F | 80°F 2021 | 9°F 1945 | 31% | 18% |
| Apr 5 | 61°F | 33°F | 80°F 1991 | 5°F 1939 | 31% | 18% |
| Apr 6 | 62°F | 33°F | 80°F 1930 | 4°F 1938 | 32% | 18% |
| Apr 7 | 62°F | 33°F | 86°F 1988 | 13°F 1983 | 32% | 18% |
| Apr 8 | 62°F | 33°F | 83°F 1930 | 9°F 1928 | 32% | 18% |
| Apr 9 | 62°F | 33°F | 78°F 1930 | 8°F 1973 | 32% | 17% |
| Apr 10 | 62°F | 33°F | 80°F 1907 | 2°F 2013 | 32% | 17% |
| Apr 11 | 62°F | 34°F | 84°F 2023 | 9°F 1940 | 33% | 17% |
| Apr 12 | 62°F | 34°F | 85°F 2025 | 2°F 1997 | 33% | 17% |
| Apr 13 | 62°F | 34°F | 83°F 2006 | 12°F 2022 | 33% | 16% |
| Apr 14 | 62°F | 34°F | 80°F 1908 | 10°F 2020 | 33% | 16% |
| Apr 15 | 63°F | 34°F | 85°F 1985 | 15°F 1945 | 34% | 16% |
| Apr 16 | 63°F | 34°F | 81°F 1958 | 17°F 1999 | 34% | 15% |
| Apr 17 | 63°F | 35°F | 83°F 1987 | 9°F 2020 | 34% | 15% |
| Apr 18 | 63°F | 35°F | 84°F 1987 | 10°F 2013 | 34% | 15% |
| Apr 19 | 63°F | 35°F | 82°F 1962 | 13°F 1966 | 35% | 14% |
| Apr 20 | 63°F | 35°F | 83°F 1989 | 10°F 2021 | 35% | 14% |
| Apr 21 | 63°F | 35°F | 88°F 1989 | 14°F 1907 | 35% | 13% |
| Apr 22 | 64°F | 36°F | 85°F 2022 | 18°F 1920 | 35% | 13% |
| Apr 23 | 64°F | 36°F | 87°F 1994 | 19°F 2023 | 36% | 13% |
| Apr 24 | 64°F | 36°F | 87°F 2012 | 18°F 2013 | 36% | 12% |
| Apr 25 | 64°F | 36°F | 84°F 1938 | 20°F 1924 | 36% | 12% |
| Apr 26 | 65°F | 37°F | 85°F 1946 | 15°F 1924 | 36% | 11% |
| Apr 27 | 65°F | 37°F | 85°F 1910 | 22°F 1924 | 36% | 11% |
| Apr 28 | 65°F | 37°F | 82°F 1910 | 23°F 1917 | 37% | 10% |
| Apr 29 | 65°F | 37°F | 84°F 1948 | 21°F 1903 | 37% | 10% |
| Apr 30 | 66°F | 38°F | 87°F 1992 | 19°F 1909 | 37% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- April 1
- sunrise 6:45 AM, sunset 7:26 PM
- April 30
- sunrise 6:02 AM, sunset 7:56 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00050848 (Boulder), public domain. Records: NOAA GHCN-Daily, station USC00050848, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.