Boulder Weather in April
Average highs run from 51°F on April 1 to 58°F on April 30, and lows from 25°F to 30°F. Normal precipitation for the month is 0.78 in over about 7 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
- 55°F
- Average low
- 27°F
- Precipitation
- 0.78 in
- Record high
- 83°FApr 25, 1910
- Record low
- -16°FApr 8, 1982
- Chance of a freeze
- 100%
- Daylight
- 12 h 49 min to 14 h 20 min
- Cloud cover
- 71%
- Humidity
- 67%
- Dew point
- 26°F
- Wind
- 6.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Apr 1 | 51°F | 25°F | 67°F 1966 | -13°F 1936 | 23% |
| Apr 2 | 52°F | 25°F | 70°F 1992 | -8°F 1936 | 23% |
| Apr 3 | 52°F | 25°F | 69°F 1992 | 1°F 1968 | 23% |
| Apr 4 | 52°F | 25°F | 69°F 1914 | 3°F 1936 | 23% |
| Apr 5 | 52°F | 25°F | 70°F 1959 | 3°F 2023 | 23% |
| Apr 6 | 52°F | 25°F | 75°F 1930 | -1°F 1997 | 23% |
| Apr 7 | 53°F | 26°F | 71°F 1930 | -6°F 1982 | 24% |
| Apr 8 | 53°F | 26°F | 73°F 1996 | -16°F 1982 | 24% |
| Apr 9 | 53°F | 26°F | 75°F 1996 | 1°F 1975 | 24% |
| Apr 10 | 53°F | 26°F | 72°F 1985 | -1°F 1975 | 24% |
| Apr 11 | 53°F | 26°F | 72°F 2012 | 3°F 1953 | 24% |
| Apr 12 | 54°F | 26°F | 72°F 1908 | 2°F 1975 | 24% |
| Apr 13 | 54°F | 26°F | 74°F 1908 | -6°F 2022 | 24% |
| Apr 14 | 54°F | 27°F | 75°F 1985 | 8°F 2022 | 25% |
| Apr 15 | 54°F | 27°F | 74°F 1926 | -1°F 2022 | 25% |
| Apr 16 | 54°F | 27°F | 74°F 1936 | 2°F 1896 | 25% |
| Apr 17 | 55°F | 27°F | 75°F 1936 | 11°F 1896 | 25% |
| Apr 18 | 55°F | 27°F | 75°F 1910 | 6°F 1941 | 25% |
| Apr 19 | 55°F | 27°F | 78°F 1962 | -3°F 1941 | 25% |
| Apr 20 | 55°F | 28°F | 77°F 1980 | 1°F 2008 | 26% |
| Apr 21 | 56°F | 28°F | 76°F 1906 | 3°F 2008 | 26% |
| Apr 22 | 56°F | 28°F | 76°F 2012 | 7°F 2001 | 26% |
| Apr 23 | 56°F | 28°F | 77°F 2012 | 10°F 2013 | 26% |
| Apr 24 | 57°F | 29°F | 77°F 1910 | 13°F 1958 | 27% |
| Apr 25 | 57°F | 29°F | 83°F 1910 | 12°F 1960 | 27% |
| Apr 26 | 57°F | 29°F | 76°F 1992 | 18°F 1958 | 27% |
| Apr 27 | 58°F | 29°F | 80°F 1987 | 15°F 1901 | 28% |
| Apr 28 | 58°F | 30°F | 78°F 1987 | 12°F 1907 | 28% |
| Apr 29 | 58°F | 30°F | 81°F 1926 | 12°F 2005 | 28% |
| Apr 30 | 58°F | 30°F | 79°F 1926 | 9°F 1950 | 29% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MDT).
- April 1
- sunrise 7:08 AM, sunset 7:57 PM
- April 30
- sunrise 6:16 AM, sunset 8:36 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00241008 (Boulder), public domain. Records: NOAA GHCN-Daily, station USW00024135, 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.