Marietta weather by month
What a typical year looks like in Marietta, North Carolina: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mullins, 22 km from Marietta; records cover 2000–2026.
The year at a glance
- Precipitation a year
- 53.2 in1352 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 23
- First fall freeze
- Nov 13
- Heating degree days
- 2,885
- Cooling degree days
- 1,769
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 20°−7° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Marietta in January
Highs average 54°12° and lows 33°0°, with 3.5 in89 mm of precipitation in a typical January.
- Record high
- 80°27° (2002)
- Record low
- 10°−12° (2018)
- Heating degree days
- 681
- Cooling degree days
- 0
Marietta in February
Highs average 58°14° and lows 35°2°, with 3.6 in91 mm of precipitation in a typical February.
- Record high
- 84°29° (2002)
- Record low
- 11°−12° (2026)
- Heating degree days
- 524
- Cooling degree days
- 2
Marietta in March
Highs average 65°19° and lows 40°5°, with 3.8 in97 mm of precipitation in a typical March.
- Record high
- 89°32° (2007)
- Record low
- 20°−7° (2009)
- Heating degree days
- 384
- Cooling degree days
- 9
Marietta in April
Highs average 74°23° and lows 49°9°, with 3.5 in88 mm of precipitation in a typical April.
- Record high
- 92°33° (2006)
- Record low
- 26°−3° (2007)
- Heating degree days
- 157
- Cooling degree days
- 48
Marietta in May
Highs average 81°27° and lows 58°15°, with 4.2 in106 mm of precipitation in a typical May.
- Record high
- 98°37° (2019)
- Record low
- 40°4° (2018)
- Heating degree days
- 31
- Cooling degree days
- 169
Marietta in June
Highs average 86°30° and lows 67°19°, with 5.3 in135 mm of precipitation in a typical June.
- Record high
- 103°39° (2008)
- Record low
- 48°9° (2026)
- Heating degree days
- 1
- Cooling degree days
- 346
Marietta in July
Highs average 90°32° and lows 70°21°, with 4.6 in117 mm of precipitation in a typical July.
- Record high
- 102°39° (2008)
- Record low
- 59°15° (2017)
- Heating degree days
- 0
- Cooling degree days
- 465
Marietta in August
Highs average 88°31° and lows 69°21°, with 6.2 in157 mm of precipitation in a typical August.
- Record high
- 105°41° (2007)
- Record low
- 57°14° (2004)
- Heating degree days
- 0
- Cooling degree days
- 411
Marietta in September
Highs average 83°28° and lows 63°17°, with 5.9 in150 mm of precipitation in a typical September.
- Record high
- 96°36° (2026)
- Record low
- 46°8° (2022)
- Heating degree days
- 8
- Cooling degree days
- 248
Marietta in OctoberThis month
Highs average 74°23° and lows 52°11°, with 4.9 in124 mm of precipitation in a typical October.
- Record high
- 94°34° (2007)
- Record low
- 32°0° (2001)
- Heating degree days
- 130
- Cooling degree days
- 64
Marietta in November
Highs average 64°18° and lows 41°5°, with 3.8 in98 mm of precipitation in a typical November.
- Record high
- 84°29° (2003)
- Record low
- 20°−7° (2014)
- Heating degree days
- 390
- Cooling degree days
- 5
Marietta in December
Highs average 57°14° and lows 36°2°, with 4 in101 mm of precipitation in a typical December.
- Record high
- 80°27° (2015)
- Record low
- 14°−10° (2022)
- Heating degree days
- 579
- Cooling degree days
- 2