March is one of the cooler months of the year in Chattanooga, with average highs near 16.3°C and lows around 4.2°C (mean 10.3°C). It is a relatively wet time of year, averaging 129 mm of rainfall and 81% relative humidity across the period.
March is one of the cooler months of the year in Chattanooga. Across 45 years of records, the warmest March in Chattanooga was 2012 — when the month averaged 15.3°C — while the coldest was 2013 at 6.7°C. Typical March days reach 16.3°C with nights near 4.2°C. The long-term trend is warming, about 0.5°C per decade.
March is a relatively wet time of year in Chattanooga, averaging 129 mm of rainfall. The wettest March on record was 2021 with 278 mm, while the driest was 2007 at 54 mm.
Relative humidity in Chattanooga during March averages 81%. The most humid March was 2020 at 87%, and the least humid was 1986 at 74%.
March receives about 4.1 kWh/m²/day of solar energy in Chattanooga. The sunniest March was 1986 at 4.8 kWh/m²/day, and the cloudiest was 2020 at 3.2.
Average wind speed in Chattanooga during March is 0.6 m/s. The windiest Marchs were 2022, 2023 and 2025, among others at 0.6 m/s, while the calmest were 2003, 2020 and 2024, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.6°C | 9.4°C | 10.6°C | 10.3°C | 11.8°C | +2.2°C |
| Avg High | 15.8°C | 15.3°C | 16.8°C | 16.2°C | 18.1°C | +2.3°C |
| Avg Low | 3.5°C | 3.6°C | 4.4°C | 4.5°C | 5.6°C | +2.1°C |
| Avg Rain | 97 mm | 165 mm | 110 mm | 117 mm | 166 mm | +69 mm |
March temperatures in Chattanooga have risen by about 2.2°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -11.2°C (1993) to a record high of 29.6°C (2007).
Rainfall in March is a relatively wet time of year, averaging 129 mm, with a wettest year of 278 mm.
A quieter season to visit Chattanooga
If your dates are flexible, the more temperate months of September and May tend to be the most comfortable for visiting Chattanooga. That said, March — with days averaging 16.3°C and nights around 4.2°C (mean 10.3°C) and higher rainfall (129 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 18.7°C | 11.7°C | 4.6°C | 24.7°C | -3.8°C | 119 mm | 75% | 0.6 m/s | 4.7 |
| 2024 | 18.2°C | 11.9°C | 5.7°C | 24.4°C | -4.1°C | 135 mm | 79% | 0.5 m/s | 4.4 |
| 2023 | 17.1°C | 10.8°C | 4.4°C | 24.5°C | -5.3°C | 134 mm | 79% | 0.6 m/s | 4.3 |
| 2022 | 17.4°C | 10.9°C | 4.4°C | 23.4°C | -6.9°C | 127 mm | 79% | 0.6 m/s | 4.6 |
| 2021 🌧️ | 18.4°C | 12.2°C | 6.0°C | 23.4°C | -3.3°C | 278 mm | 81% | 0.6 m/s | 4 |
| 2020 | 18.6°C | 13.5°C | 8.3°C | 26.3°C | -2.6°C | 201 mm | 87% | 0.5 m/s | 3.2 |
| 2019 | 15.1°C | 9.3°C | 3.4°C | 21.9°C | -6.0°C | 130 mm | 79% | 0.6 m/s | 4.5 |
| 2018 | 15.1°C | 9.3°C | 3.5°C | 22.6°C | -3.2°C | 96 mm | 81% | 0.6 m/s | 3.8 |
| 2017 | 17.2°C | 11.0°C | 4.8°C | 26.9°C | -5.6°C | 122 mm | 77% | 0.6 m/s | 4.3 |
| 2016 | 18.1°C | 12.6°C | 7.1°C | 25.4°C | -1.0°C | 78 mm | 82% | 0.6 m/s | 4.3 |
| 2015 | 17.2°C | 11.1°C | 5.0°C | 23.5°C | -8.2°C | 102 mm | 82% | 0.6 m/s | 3.8 |
| 2014 | 15.2°C | 8.9°C | 2.6°C | 22.8°C | -5.3°C | 76 mm | 80% | 0.6 m/s | 4.2 |
| 2013 ❄️ | 12.7°C | 6.7°C | 0.7°C | 21.2°C | -5.7°C | 123 mm | 81% | 0.6 m/s | 3.6 |
| 2012 🔥 | 20.7°C | 15.3°C | 9.9°C | 27.0°C | -2.7°C | 120 mm | 83% | 0.6 m/s | 4.6 |
| 2011 | 16.4°C | 10.9°C | 5.4°C | 24.9°C | -0.8°C | 227 mm | 83% | 0.6 m/s | 3.4 |
| 2010 | 13.8°C | 8.3°C | 2.9°C | 23.0°C | -3.9°C | 96 mm | 83% | 0.6 m/s | 3.5 |
| 2009 | 16.4°C | 10.8°C | 5.3°C | 24.8°C | -6.2°C | 121 mm | 82% | 0.6 m/s | 3.6 |
| 2008 | 16.6°C | 10.0°C | 3.5°C | 22.0°C | -3.7°C | 134 mm | 79% | 0.6 m/s | 4 |
| 2007 | 20.2°C | 13.6°C | 7.0°C | 29.6°C | -4.9°C | 54 mm | 75% | 0.6 m/s | 4.6 |
| 2006 | 16.4°C | 10.2°C | 3.9°C | 25.8°C | -3.4°C | 76 mm | 77% | 0.6 m/s | 4.4 |
| 2005 | 14.6°C | 8.8°C | 2.9°C | 24.5°C | -5.2°C | 109 mm | 81% | 0.6 m/s | 4.2 |
| 2004 | 17.9°C | 11.7°C | 5.6°C | 25.1°C | -3.5°C | 102 mm | 79% | 0.6 m/s | 4.6 |
| 2003 | 16.9°C | 11.2°C | 5.5°C | 22.4°C | -3.4°C | 69 mm | 84% | 0.5 m/s | 3.9 |
| 2002 | 16.9°C | 10.3°C | 3.7°C | 24.0°C | -6.3°C | 190 mm | 80% | 0.6 m/s | 3.9 |
| 2001 | 13.3°C | 7.5°C | 1.8°C | 18.2°C | -4.5°C | 131 mm | 80% | 0.6 m/s | 4.1 |
| 2000 | 18.7°C | 11.8°C | 4.8°C | 24.6°C | -2.9°C | 114 mm | 77% | 0.6 m/s | 4.6 |
| 1999 | 13.9°C | 7.4°C | 1.0°C | 20.0°C | -5.3°C | 99 mm | 79% | 0.6 m/s | 4.2 |
| 1998 | 14.0°C | 8.8°C | 3.5°C | 25.6°C | -6.4°C | 146 mm | 83% | 0.6 m/s | 3.7 |
| 1997 | 18.4°C | 12.1°C | 5.9°C | 23.1°C | -4.0°C | 153 mm | 82% | 0.6 m/s | 4.4 |
| 1996 | 12.9°C | 7.0°C | 1.1°C | 20.9°C | -11.1°C | 202 mm | 80% | 0.6 m/s | 4 |
| 1995 | 17.6°C | 11.3°C | 5.0°C | 25.3°C | -4.8°C | 97 mm | 82% | 0.6 m/s | 4.4 |
| 1994 | 15.5°C | 9.4°C | 3.4°C | 23.2°C | -3.8°C | 275 mm | 83% | 0.6 m/s | 4.2 |
| 1993 | 12.6°C | 7.5°C | 2.3°C | 25.2°C | -11.2°C | 165 mm | 84% | 0.6 m/s | 3.3 |
| 1992 | 15.4°C | 9.3°C | 3.2°C | 23.3°C | -5.2°C | 118 mm | 80% | 0.6 m/s | 4.1 |
| 1991 | 16.1°C | 10.4°C | 4.6°C | 23.9°C | -3.7°C | 180 mm | 83% | 0.6 m/s | 4 |
| 1990 | 16.7°C | 11.2°C | 5.8°C | 25.0°C | -4.0°C | 220 mm | 84% | 0.5 m/s | 3.8 |
| 1989 | 17.0°C | 11.2°C | 5.4°C | 23.5°C | -1.8°C | 153 mm | 84% | 0.6 m/s | 3.9 |
| 1988 | 15.6°C | 9.4°C | 3.1°C | 21.9°C | -5.8°C | 67 mm | 81% | 0.6 m/s | 4.2 |
| 1987 | 15.4°C | 9.6°C | 3.8°C | 22.8°C | -2.8°C | 91 mm | 83% | 0.5 m/s | 4.5 |
| 1986 | 16.7°C | 9.8°C | 2.9°C | 26.8°C | -6.2°C | 69 mm | 74% | 0.6 m/s | 4.8 |
| 1985 | 16.5°C | 10.4°C | 4.2°C | 25.5°C | -3.5°C | 58 mm | 80% | 0.6 m/s | 4.2 |
| 1984 | 14.8°C | 8.6°C | 2.5°C | 23.5°C | -5.4°C | 122 mm | 83% | 0.6 m/s | 3.8 |
| 1983 | 14.9°C | 9.1°C | 3.3°C | 22.1°C | -4.9°C | 107 mm | 81% | 0.6 m/s | — |
| 1982 | 16.5°C | 10.9°C | 5.2°C | 27.4°C | -5.6°C | 99 mm | 86% | 0.5 m/s | — |
| 1981 | 14.4°C | 7.7°C | 1.0°C | 24.9°C | -4.6°C | 110 mm | 77% | 0.6 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 16.3°C with lows near 4.2°C (mean 10.3°C), based on 45 years of NASA POWER data.
March averages 129 mm of rainfall in Chattanooga, a relatively wet time of year. The wettest on record was 278 mm in 2021.
The hottest March reached 29.6°C in 2007. The coldest dipped to -11.2°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.2°C. Daytime highs moved from 15.4°C to 18°C and overnight lows from 3.2°C to 5°C over the same span.
March is one of the cooler months of the year in Chattanooga and a relatively wet time of year, so plan for around 16.3°C daytime highs and 4.2°C at night.
Not quite — March is the 5th coolest month in Chattanooga, averaging 10.3°C.
For March in Chattanooga, pack warm layers and a jacket for chilly mornings, with typical highs of 16.3°C and lows of 4.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 81% — quite humid.
Average wind speed in March is 0.6 m/s. The windiest March on record averaged 0.6 m/s (1981).
The wettest March on record was 2021 with 278 mm. On average, March sees 129 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 Chattanooga 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.
