March is one of the cooler months of the year in Baytown, with average highs near 22.1°C and lows around 11°C (mean 16.6°C). It is one of the drier months, averaging 86 mm of rainfall and 81% relative humidity across the period.
March is one of the cooler months of the year in Baytown. Across 45 years of records, the warmest March in Baytown was 2020 — when the month averaged 20.8°C — while the coldest was 2010 at 13.4°C. Typical March days reach 22.1°C with nights near 11°C. The long-term trend is warming, about 0.6°C per decade.
March is one of the drier months in Baytown, averaging 86 mm of rainfall. The wettest March on record was 2001 with 197 mm, while the driest was 1996 at 13 mm.
Relative humidity in Baytown during March averages 81%. The most humid March was 1997 at 87%, and the least humid was 2013 at 70%.
March receives about 4.6 kWh/m²/day of solar energy in Baytown. The sunniest Marchs were 2013 and 2022 at 5.4 kWh/m²/day, and the cloudiest was 1995 at 3.6.
Average wind speed in Baytown during March is 1.9 m/s. The windiest March was 2008 at 2.3 m/s, while the calmest were 2003 and 2015 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.5°C | 15.9°C | 16.7°C | 16.8°C | 18.3°C | +2.8°C |
| Avg High | 21.2°C | 21.2°C | 22.2°C | 22.3°C | 24.1°C | +2.9°C |
| Avg Low | 9.8°C | 10.5°C | 11.2°C | 11.3°C | 12.5°C | +2.7°C |
| Avg Rain | 78 mm | 102 mm | 86 mm | 92 mm | 59 mm | -19 mm |
March temperatures in Baytown have risen by about 1.9°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -4.4°C (2002) to a record high of 31°C (2020).
Rainfall in March is one of the drier months, averaging 86 mm, with a wettest year of 197 mm.
One of the best times to visit Baytown
March is one of the best times to visit Baytown. Expect days averaging 22.1°C and nights around 11°C (mean 16.6°C) — cooler than Baytown's yearly average — with higher rainfall (86 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 24.5°C | 18.5°C | 12.6°C | 30.8°C | 4.5°C | 65 mm | 77% | 2 m/s | 5.1 |
| 2024 | 23.5°C | 18.2°C | 12.9°C | 28.1°C | 5.9°C | 87 mm | 83% | 1.7 m/s | 4.1 |
| 2023 | 24.3°C | 18.9°C | 13.5°C | 28.9°C | 1.6°C | 42 mm | 79% | 2 m/s | 4.3 |
| 2022 | 22.8°C | 16.1°C | 9.3°C | 28.5°C | -0.5°C | 86 mm | 73% | 2.1 m/s | 5.4 |
| 2021 | 23.4°C | 17.3°C | 11.1°C | 28.9°C | 3.1°C | 39 mm | 79% | 1.9 m/s | 4.6 |
| 2020 🔥 | 26.1°C | 20.8°C | 15.5°C | 31.0°C | 6.3°C | 38 mm | 82% | 1.9 m/s | 4.2 |
| 2019 | 20.9°C | 15.6°C | 10.2°C | 27.2°C | -3.0°C | 18 mm | 80% | 1.8 m/s | 4 |
| 2018 | 23.3°C | 18.0°C | 12.8°C | 27.5°C | 5.0°C | 96 mm | 80% | 1.9 m/s | 5 |
| 2017 | 23.9°C | 18.9°C | 14.0°C | 28.4°C | 4.3°C | 128 mm | 82% | 2 m/s | 4.7 |
| 2016 | 23.6°C | 18.3°C | 13.0°C | 28.9°C | 2.0°C | 158 mm | 83% | 2 m/s | 4.5 |
| 2015 | 21.5°C | 16.4°C | 11.2°C | 26.5°C | -2.7°C | 193 mm | 86% | 1.5 m/s | 4.1 |
| 2014 | 19.4°C | 13.9°C | 8.3°C | 26.9°C | -3.5°C | 71 mm | 82% | 1.8 m/s | 4.2 |
| 2013 | 22.3°C | 15.5°C | 8.8°C | 30.7°C | 1.0°C | 30 mm | 70% | 1.9 m/s | 5.4 |
| 2012 | 24.2°C | 19.5°C | 14.8°C | 27.9°C | 6.0°C | 141 mm | 85% | 1.8 m/s | 4.5 |
| 2011 | 24.7°C | 18.4°C | 12.1°C | 30.6°C | 3.0°C | 39 mm | 76% | 1.8 m/s | 4.9 |
| 2010 ❄️ | 19.5°C | 13.4°C | 7.3°C | 24.6°C | 0.1°C | 52 mm | 80% | 1.8 m/s | 5.1 |
| 2009 | 22.8°C | 16.9°C | 11.1°C | 28.2°C | -0.5°C | 110 mm | 78% | 1.9 m/s | 4.6 |
| 2008 | 22.0°C | 16.2°C | 10.5°C | 27.3°C | -0.1°C | 58 mm | 80% | 2.3 m/s | 5 |
| 2007 | 22.5°C | 17.6°C | 12.8°C | 26.4°C | 0.4°C | 142 mm | 84% | 1.7 m/s | 4.8 |
| 2006 | 24.3°C | 18.5°C | 12.7°C | 29.2°C | 1.4°C | 49 mm | 75% | 2 m/s | 4.5 |
| 2005 | 20.8°C | 15.3°C | 9.7°C | 27.4°C | 2.5°C | 75 mm | 83% | 1.7 m/s | 4.6 |
| 2004 | 22.9°C | 18.1°C | 13.4°C | 25.9°C | 6.3°C | 55 mm | 84% | 1.7 m/s | 4.8 |
| 2003 | 20.6°C | 15.2°C | 9.8°C | 25.7°C | 1.5°C | 54 mm | 85% | 1.5 m/s | 4.2 |
| 2002 | 21.3°C | 15.7°C | 10.1°C | 26.8°C | -4.4°C | 74 mm | 82% | 2.2 m/s | 4.5 |
| 2001 🌧️ | 19.1°C | 13.7°C | 8.2°C | 25.3°C | 4.6°C | 197 mm | 83% | 1.7 m/s | 4.5 |
| 2000 | 25.9°C | 19.8°C | 13.8°C | 30.9°C | 3.2°C | 44 mm | 76% | 1.9 m/s | 5 |
| 1999 | 22.5°C | 17.1°C | 11.7°C | 27.6°C | 0.6°C | 92 mm | 81% | 2 m/s | 4.4 |
| 1998 | 20.2°C | 14.6°C | 9.1°C | 26.1°C | -1.1°C | 55 mm | 81% | 2.2 m/s | 4.8 |
| 1997 | 22.5°C | 17.4°C | 12.2°C | 27.5°C | 5.2°C | 157 mm | 87% | 1.8 m/s | 4 |
| 1996 | 20.1°C | 13.7°C | 7.3°C | 29.1°C | -3.4°C | 13 mm | 71% | 2 m/s | 4.8 |
| 1995 | 20.9°C | 16.1°C | 11.3°C | 28.8°C | -0.5°C | 151 mm | 86% | 1.8 m/s | 3.6 |
| 1994 | 21.6°C | 15.9°C | 10.1°C | 26.8°C | 0.2°C | 68 mm | 81% | 1.8 m/s | 4.5 |
| 1993 | 19.9°C | 14.7°C | 9.4°C | 27.1°C | -3.7°C | 156 mm | 83% | 1.8 m/s | 4.5 |
| 1992 | 21.4°C | 16.3°C | 11.1°C | 26.5°C | 1.8°C | 136 mm | 85% | 1.9 m/s | 4.3 |
| 1991 | 21.6°C | 16.2°C | 10.8°C | 26.7°C | 3.8°C | 56 mm | 83% | 2 m/s | 4.4 |
| 1990 | 21.2°C | 16.6°C | 12.0°C | 25.3°C | 3.2°C | 138 mm | 84% | 2 m/s | 4.1 |
| 1989 | 21.0°C | 15.3°C | 9.6°C | 28.1°C | -3.6°C | 98 mm | 81% | 2 m/s | 4.6 |
| 1988 | 20.6°C | 14.8°C | 9.0°C | 27.9°C | -1.0°C | 132 mm | 80% | 2.1 m/s | 4.5 |
| 1987 | 19.8°C | 13.7°C | 7.5°C | 24.6°C | -1.1°C | 32 mm | 78% | 1.7 m/s | 4.9 |
| 1986 | 22.2°C | 16.1°C | 9.9°C | 26.8°C | 0.7°C | 36 mm | 76% | 1.6 m/s | 5.2 |
| 1985 | 22.3°C | 17.3°C | 12.4°C | 26.3°C | 6.5°C | 118 mm | 85% | 2 m/s | 4.1 |
| 1984 | 21.1°C | 15.4°C | 9.7°C | 28.8°C | 1.6°C | 61 mm | 82% | 1.9 m/s | 4.5 |
| 1983 | 20.0°C | 14.1°C | 8.3°C | 24.3°C | 1.0°C | 107 mm | 81% | 1.9 m/s | — |
| 1982 | 22.5°C | 17.4°C | 12.3°C | 29.0°C | -0.9°C | 63 mm | 83% | 1.9 m/s | — |
| 1981 | 21.2°C | 15.4°C | 9.6°C | 29.7°C | 1.5°C | 57 mm | 76% | 1.8 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 22.1°C with lows near 11°C (mean 16.6°C), based on 45 years of NASA POWER data.
March averages 86 mm of rainfall in Baytown, one of the drier months. The wettest on record was 197 mm in 2001.
The hottest March reached 31°C in 2020. The coldest dipped to -4.4°C in 2002.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.9°C. Daytime highs moved from 21.4°C to 23.7°C and overnight lows from 10.5°C to 11.9°C over the same span.
March is one of the cooler months of the year in Baytown and one of the drier months, so plan for around 22.1°C daytime highs and 11°C at night.
Not quite — March is the 5th coolest month in Baytown, averaging 16.6°C.
For March in Baytown, pack light layers you can adjust through the day, with typical highs of 22.1°C and lows of 11°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 81% — quite humid.
Average wind speed in March is 1.9 m/s. The windiest March on record averaged 2.3 m/s (2008).
The wettest March on record was 2001 with 197 mm. On average, March sees 86 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 Baytown 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.
