Thornton Weather in April
Average highs run from 74°F on April 1 to 80°F on April 30, and lows from 48°F to 56°F. Normal precipitation for the month is 3.35 in over about 6 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
- 77°F
- Average low
- 52°F
- Precipitation
- 3.35 in
- Record high
- 97°FApr 18, 1987
- Record low
- 27°FApr 3, 1987
- Chance of a freeze
- 27%
- Days of 90°F or more
- 1.1
- Daylight
- 12 h 31 min to 13 h 23 min
- Cloud cover
- 56%
- Humidity
- 76%
- Dew point
- 57°F
- Wind
- 10.7 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 | 74°F | 48°F | 88°F 1974 | 33°F 1996 | 23% | 0% |
| Apr 2 | 74°F | 49°F | 86°F 1974 | 34°F 1962 | 23% | 0% |
| Apr 3 | 74°F | 49°F | 93°F 1989 | 27°F 1987 | 23% | 0% |
| Apr 4 | 75°F | 49°F | 88°F 1978 | 31°F 1987 | 23% | 0% |
| Apr 5 | 75°F | 49°F | 86°F 1978 | 32°F 1984 | 23% | 0% |
| Apr 6 | 75°F | 50°F | 85°F 1967 | 37°F 1970 | 22% | 0% |
| Apr 7 | 75°F | 50°F | 89°F 1980 | 30°F 1996 | 22% | 0% |
| Apr 8 | 75°F | 50°F | 90°F 1972 | 32°F 2007 | 22% | 0% |
| Apr 9 | 76°F | 50°F | 93°F 1963 | 32°F 2003 | 22% | 0% |
| Apr 10 | 76°F | 51°F | 91°F 1963 | 30°F 1973 | 22% | 0% |
| Apr 11 | 76°F | 51°F | 90°F 1963 | 28°F 1989 | 22% | 0% |
| Apr 12 | 76°F | 51°F | 89°F 1974 | 36°F 1997 | 22% | 0% |
| Apr 13 | 77°F | 51°F | 88°F 1972 | 34°F 1997 | 22% | 0% |
| Apr 14 | 77°F | 52°F | 88°F 1974 | 35°F 1980 | 22% | 0% |
| Apr 15 | 77°F | 52°F | 89°F 1985 | 29°F 1983 | 22% | 0% |
| Apr 16 | 77°F | 52°F | 88°F 2006 | 32°F 1983 | 22% | 0% |
| Apr 17 | 77°F | 52°F | 94°F 1987 | 33°F 1999 | 22% | 0% |
| Apr 18 | 78°F | 53°F | 97°F 1987 | 39°F 1999 | 22% | 0% |
| Apr 19 | 78°F | 53°F | 96°F 1987 | 39°F 1988 | 22% | 0% |
| Apr 20 | 78°F | 53°F | 94°F 1987 | 44°F 1978 | 22% | 0% |
| Apr 21 | 78°F | 54°F | 92°F 1984 | 41°F 1966 | 22% | 0% |
| Apr 22 | 78°F | 54°F | 88°F 1989 | 41°F 1998 | 22% | 0% |
| Apr 23 | 78°F | 54°F | 89°F 1988 | 39°F 1984 | 22% | 0% |
| Apr 24 | 79°F | 54°F | 89°F 2000 | 37°F 2005 | 22% | 0% |
| Apr 25 | 79°F | 55°F | 90°F 1989 | 38°F 1983 | 22% | 0% |
| Apr 26 | 79°F | 55°F | 92°F 1984 | 46°F 1980 | 22% | 0% |
| Apr 27 | 79°F | 55°F | 93°F 1987 | 43°F 1980 | 23% | 0% |
| Apr 28 | 79°F | 56°F | 94°F 1987 | 45°F 1973 | 23% | 0% |
| Apr 29 | 80°F | 56°F | 95°F 1990 | 43°F 1965 | 23% | 0% |
| Apr 30 | 80°F | 56°F | 90°F 1987 | 40°F 1996 | 23% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- April 1
- sunrise 7:15 AM, sunset 7:46 PM
- April 30
- sunrise 6:42 AM, sunset 8:05 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00415611 (Marlin), public domain. Records: NOAA GHCN-Daily, station USC00413047, 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.