March is one of the cooler months of the year in Conroe, with average highs near 21.8°C and lows around 9.8°C (mean 15.8°C). It is one of the drier months, averaging 87 mm of rainfall and 79% relative humidity across the period.
March is one of the cooler months of the year in Conroe. Across 45 years of records, the warmest March in Conroe was 2020 — when the month averaged 20.3°C — while the coldest was 2001 at 12.7°C. Typical March days reach 21.8°C with nights near 9.8°C. The long-term trend is warming, about 0.6°C per decade.
March is one of the drier months in Conroe, averaging 87 mm of rainfall. The wettest March on record was 2001 with 191 mm, while the driest was 2019 at 19 mm.
Relative humidity in Conroe during March averages 79%. The most humid March was 1995 at 86%, and the least humid was 1996 at 66%.
March receives about 4.4 kWh/m²/day of solar energy in Conroe. The sunniest Marchs were 1986, 1987 and 2013 at 5.3 kWh/m²/day, and the cloudiest were 1995, 2015 and 2020 at 3.7.
Average wind speed in Conroe during March is 1 m/s. The windiest Marchs were 1998, 2002 and 2008, among others at 1.2 m/s, while the calmest were 2007, 2015 and 2024, among others at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.9°C | 15.1°C | 15.9°C | 16.1°C | 17.6°C | +2.7°C |
| Avg High | 21.0°C | 20.9°C | 21.8°C | 22.2°C | 24.0°C | +3°C |
| Avg Low | 8.8°C | 9.3°C | 10.1°C | 10.0°C | 11.3°C | +2.5°C |
| Avg Rain | 84 mm | 96 mm | 90 mm | 89 mm | 67 mm | -17 mm |
March temperatures in Conroe have risen by about 1.7°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -6°C (2014) to a record high of 32.4°C (2025).
Rainfall in March is one of the drier months, averaging 87 mm, with a wettest year of 191 mm.
A good time to visit Conroe
March is a good time to visit Conroe, with days averaging 21.8°C and nights around 9.8°C (mean 15.8°C, cooler than Conroe's yearly average) and higher rainfall. October and April are marginally more temperate, but March still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.2°C | 18.3°C | 11.3°C | 32.4°C | 3.4°C | 62 mm | 74% | 1.1 m/s | 5.2 |
| 2024 | 23.2°C | 17.6°C | 12.0°C | 29.0°C | 4.9°C | 73 mm | 82% | 0.9 m/s | 4.1 |
| 2023 | 23.7°C | 17.8°C | 12.0°C | 28.5°C | 0.8°C | 44 mm | 77% | 1.1 m/s | 4.1 |
| 2022 | 22.4°C | 15.2°C | 8.0°C | 28.7°C | -2.7°C | 100 mm | 70% | 1.1 m/s | 5.1 |
| 2021 | 23.5°C | 16.6°C | 9.7°C | 30.1°C | 2.2°C | 39 mm | 75% | 1.1 m/s | 4.6 |
| 2020 🔥 | 26.1°C | 20.3°C | 14.6°C | 31.4°C | 5.5°C | 84 mm | 81% | 1 m/s | 3.7 |
| 2019 | 20.4°C | 14.7°C | 9.0°C | 26.6°C | -4.3°C | 19 mm | 79% | 1 m/s | 4.2 |
| 2018 | 23.6°C | 17.6°C | 11.7°C | 28.8°C | 4.1°C | 124 mm | 77% | 1 m/s | 4.9 |
| 2017 | 24.1°C | 18.4°C | 12.8°C | 29.5°C | 3.3°C | 82 mm | 80% | 1 m/s | 4.6 |
| 2016 | 23.6°C | 17.6°C | 11.6°C | 28.8°C | 1.4°C | 150 mm | 82% | 1 m/s | 4.7 |
| 2015 | 20.8°C | 15.4°C | 10.0°C | 26.6°C | -4.2°C | 174 mm | 86% | 0.9 m/s | 3.7 |
| 2014 | 19.3°C | 13.1°C | 6.8°C | 27.9°C | -6.0°C | 72 mm | 81% | 1 m/s | 4.3 |
| 2013 | 22.2°C | 14.9°C | 7.5°C | 31.1°C | -0.6°C | 37 mm | 69% | 1.1 m/s | 5.3 |
| 2012 | 23.7°C | 18.6°C | 13.4°C | 28.2°C | 3.9°C | 160 mm | 84% | 1 m/s | 4.1 |
| 2011 | 25.5°C | 18.3°C | 11.1°C | 32.0°C | 1.7°C | 20 mm | 70% | 1.1 m/s | 4.7 |
| 2010 | 19.2°C | 12.8°C | 6.4°C | 25.5°C | -0.2°C | 56 mm | 80% | 1 m/s | 5.2 |
| 2009 | 22.6°C | 16.1°C | 9.7°C | 29.6°C | -1.8°C | 118 mm | 76% | 1.1 m/s | 4.1 |
| 2008 | 21.8°C | 15.5°C | 9.2°C | 27.7°C | -2.2°C | 66 mm | 80% | 1.2 m/s | 4.6 |
| 2007 | 22.4°C | 17.2°C | 12.0°C | 27.1°C | -1.3°C | 129 mm | 83% | 0.9 m/s | 4.3 |
| 2006 | 23.7°C | 17.6°C | 11.5°C | 29.7°C | -0.2°C | 67 mm | 75% | 1.1 m/s | 4.3 |
| 2005 | 20.4°C | 14.5°C | 8.5°C | 28.3°C | 1.0°C | 80 mm | 82% | 1 m/s | 4.6 |
| 2004 | 22.9°C | 17.8°C | 12.7°C | 27.1°C | 4.8°C | 64 mm | 82% | 0.9 m/s | 4.2 |
| 2003 | 19.9°C | 14.4°C | 8.8°C | 25.6°C | 0.3°C | 52 mm | 85% | 0.9 m/s | 4.2 |
| 2002 | 21.0°C | 14.7°C | 8.4°C | 27.5°C | -5.0°C | 67 mm | 81% | 1.2 m/s | 4.2 |
| 2001 ❄️ 🌧️ | 18.2°C | 12.7°C | 7.3°C | 24.3°C | 3.8°C | 191 mm | 83% | 0.9 m/s | 4.1 |
| 2000 | 25.3°C | 18.9°C | 12.5°C | 30.9°C | 2.2°C | 65 mm | 75% | 1 m/s | 4.6 |
| 1999 | 21.8°C | 16.0°C | 10.1°C | 26.2°C | -0.5°C | 101 mm | 82% | 1.1 m/s | 4.1 |
| 1998 | 19.9°C | 14.0°C | 8.1°C | 27.3°C | -2.4°C | 54 mm | 80% | 1.2 m/s | 4.7 |
| 1997 | 22.2°C | 16.5°C | 10.8°C | 28.3°C | 3.9°C | 123 mm | 85% | 1 m/s | 3.9 |
| 1996 | 20.3°C | 13.2°C | 6.1°C | 30.3°C | -4.8°C | 20 mm | 66% | 1.2 m/s | 4.7 |
| 1995 | 20.6°C | 15.5°C | 10.5°C | 29.1°C | -1.7°C | 136 mm | 86% | 1 m/s | 3.7 |
| 1994 | 21.3°C | 15.1°C | 9.0°C | 27.6°C | -0.9°C | 66 mm | 81% | 1 m/s | 4.5 |
| 1993 | 19.4°C | 13.9°C | 8.4°C | 26.8°C | -3.7°C | 135 mm | 83% | 1 m/s | 4.2 |
| 1992 | 21.1°C | 15.4°C | 9.8°C | 26.4°C | 0.7°C | 135 mm | 84% | 1 m/s | 4.6 |
| 1991 | 20.9°C | 15.2°C | 9.5°C | 28.3°C | 3.4°C | 56 mm | 81% | 1 m/s | 4.5 |
| 1990 | 21.1°C | 15.8°C | 10.6°C | 26.1°C | 1.8°C | 132 mm | 83% | 1.1 m/s | 3.9 |
| 1989 | 20.7°C | 14.6°C | 8.5°C | 27.7°C | -4.6°C | 123 mm | 81% | 1.1 m/s | 4.4 |
| 1988 | 20.4°C | 14.1°C | 7.8°C | 27.3°C | -2.0°C | 113 mm | 79% | 1.1 m/s | 4.3 |
| 1987 | 19.5°C | 13.0°C | 6.5°C | 25.6°C | -2.5°C | 43 mm | 77% | 0.9 m/s | 5.3 |
| 1986 | 21.9°C | 15.2°C | 8.5°C | 26.5°C | -0.3°C | 29 mm | 76% | 0.9 m/s | 5.3 |
| 1985 | 22.2°C | 16.9°C | 11.6°C | 27.2°C | 4.3°C | 88 mm | 84% | 1.1 m/s | 3.9 |
| 1984 | 21.1°C | 14.9°C | 8.7°C | 29.5°C | -1.1°C | 86 mm | 81% | 1.1 m/s | 4.3 |
| 1983 | 19.6°C | 13.4°C | 7.2°C | 24.7°C | -0.3°C | 129 mm | 81% | 1.1 m/s | — |
| 1982 | 22.8°C | 17.2°C | 11.6°C | 30.9°C | -1.9°C | 80 mm | 81% | 1.1 m/s | — |
| 1981 | 20.9°C | 14.7°C | 8.5°C | 30.2°C | 0.2°C | 63 mm | 74% | 1 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 21.8°C with lows near 9.8°C (mean 15.8°C), based on 45 years of NASA POWER data.
March averages 87 mm of rainfall in Conroe, one of the drier months. The wettest on record was 191 mm in 2001.
The hottest March reached 32.4°C in 2025. The coldest dipped to -6°C in 2014.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.7°C. Daytime highs moved from 21.3°C to 23.6°C and overnight lows from 9.5°C to 10.6°C over the same span.
March is one of the cooler months of the year in Conroe and one of the drier months, so plan for around 21.8°C daytime highs and 9.8°C at night.
Not quite — March is the 5th coolest month in Conroe, averaging 15.8°C.
For March in Conroe, pack light layers you can adjust through the day, with typical highs of 21.8°C and lows of 9.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 79% — quite humid.
Average wind speed in March is 1 m/s. The windiest March on record averaged 1.2 m/s (1996).
The wettest March on record was 2001 with 191 mm. On average, March sees 87 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Conroe behaves each March, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for March specifically, along with year-by-year records and how the month has changed over the decades.
