Castle Rock Weather in March
Average highs run from 50°F on March 1 to 57°F on March 31, and lows from 23°F to 30°F. Normal precipitation for the month is 1.54 in over about 5 wet days.
March day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
March at a glance
- Average high
- 54°F
- Average low
- 27°F
- Precipitation
- 1.54 in
- Snowfall
- 10.7 in
- Record high
- 86°FMar 21, 2026
- Record low
- -9°FMar 2, 2002
- Chance of a freeze
- 100%
- Daylight
- 11 h 20 min to 12 h 37 min
- Cloud cover
- 56%
- Humidity
- 52%
- Dew point
- 19°F
- Wind
- 9.4 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 |
|---|---|---|---|---|---|---|
| Mar 1 | 50°F | 23°F | 72°F 2008 | 2°F 2002 | 16% | 12% |
| Mar 2 | 50°F | 23°F | 74°F 2009 | -9°F 2002 | 16% | 12% |
| Mar 3 | 50°F | 23°F | 74°F 2009 | -4°F 2002 | 16% | 12% |
| Mar 4 | 51°F | 24°F | 72°F 2009 | 0°F 2019 | 16% | 12% |
| Mar 5 | 51°F | 24°F | 68°F 2026 | 2°F 2019 | 16% | 11% |
| Mar 6 | 51°F | 24°F | 70°F 2006 | 14°F 2008 | 16% | 11% |
| Mar 7 | 52°F | 24°F | 67°F 2021 | 9°F 2022 | 16% | 11% |
| Mar 8 | 52°F | 25°F | 68°F 2021 | 2°F 2002 | 16% | 11% |
| Mar 9 | 52°F | 25°F | 71°F 2014 | 2°F 2022 | 16% | 11% |
| Mar 10 | 53°F | 25°F | 70°F 2025 | -5°F 2022 | 16% | 11% |
| Mar 11 | 53°F | 26°F | 73°F 2016 | 2°F 2022 | 16% | 11% |
| Mar 12 | 53°F | 26°F | 69°F 2007 | 12°F 2014 | 16% | 11% |
| Mar 13 | 53°F | 26°F | 74°F 2003 | 14°F 1999 | 16% | 11% |
| Mar 14 | 54°F | 26°F | 73°F 2003 | 13°F 2006 | 16% | 11% |
| Mar 15 | 54°F | 27°F | 77°F 2015 | 11°F 2026 | 16% | 11% |
| Mar 16 | 54°F | 27°F | 78°F 2015 | 11°F 2026 | 16% | 11% |
| Mar 17 | 54°F | 27°F | 72°F 2007 | 19°F 2002 | 16% | 11% |
| Mar 18 | 55°F | 27°F | 79°F 2017 | 14°F 2023 | 16% | 11% |
| Mar 19 | 55°F | 27°F | 83°F 2026 | 16°F 2002 | 16% | 11% |
| Mar 20 | 55°F | 28°F | 83°F 2026 | 15°F 2006 | 17% | 11% |
| Mar 21 | 55°F | 28°F | 86°F 2026 | 6°F 2006 | 17% | 11% |
| Mar 22 | 56°F | 28°F | 77°F 2004 | 16°F 2002 | 17% | 11% |
| Mar 23 | 56°F | 28°F | 75°F 2012 | 7°F 2013 | 17% | 11% |
| Mar 24 | 56°F | 28°F | 78°F 2026 | -2°F 2013 | 17% | 11% |
| Mar 25 | 56°F | 29°F | 86°F 2026 | 1°F 2013 | 17% | 11% |
| Mar 26 | 56°F | 29°F | 77°F 2004 | 13°F 2009 | 17% | 11% |
| Mar 27 | 56°F | 29°F | 74°F 2019 | 12°F 2009 | 18% | 11% |
| Mar 28 | 57°F | 29°F | 78°F 2026 | 13°F 2023 | 18% | 11% |
| Mar 29 | 57°F | 29°F | 76°F 2026 | 16°F 2003 | 18% | 11% |
| Mar 30 | 57°F | 29°F | 79°F 2010 | 17°F 2007 | 18% | 11% |
| Mar 31 | 57°F | 30°F | 80°F 2012 | 17°F 2009 | 18% | 11% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- March 1
- sunrise 6:32 AM, sunset 5:52 PM
- March 31
- sunrise 6:45 AM, sunset 7:22 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00051401 (Castle Rock), public domain. Records: NOAA GHCN-Daily, station USW00093067, 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.