Portal weather by month
What a typical year looks like in Portal, Georgia: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Rocky Ford 4se, 18 km from Portal; records cover 1999–2026.
The year at a glance
- Precipitation a year
- 48.4 in1230 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 12
- First fall freeze
- Nov 13
- Heating degree days
- 2,301
- Cooling degree days
- 2,121
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 21°−6° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Portal in January
Highs average 58°14° and lows 36°2°, with 4.2 in107 mm of precipitation in a typical January.
- Record high
- 81°27° (2026)
- Record low
- 14°−10° (2003)
- Heating degree days
- 569
- Cooling degree days
- 2
Portal in February
Highs average 62°17° and lows 39°4°, with 3.6 in92 mm of precipitation in a typical February.
- Record high
- 85°29° (2022)
- Record low
- 17°−8° (2026)
- Heating degree days
- 416
- Cooling degree days
- 4
Portal in March
Highs average 69°20° and lows 44°7°, with 4.3 in109 mm of precipitation in a typical March.
- Record high
- 91°33° (2026)
- Record low
- 24°−4° (2009)
- Heating degree days
- 283
- Cooling degree days
- 18
Portal in April
Highs average 76°25° and lows 51°10°, with 3.3 in85 mm of precipitation in a typical April.
- Record high
- 93°34° (2017)
- Record low
- 27°−3° (2007)
- Heating degree days
- 109
- Cooling degree days
- 68
Portal in May
Highs average 84°29° and lows 60°15°, with 3.5 in88 mm of precipitation in a typical May.
- Record high
- 100°38° (2019)
- Record low
- 39°4° (2005)
- Heating degree days
- 18
- Cooling degree days
- 223
Portal in June
Highs average 89°31° and lows 68°20°, with 5.7 in144 mm of precipitation in a typical June.
- Record high
- 103°39° (2024)
- Record low
- 52°11° (2012)
- Heating degree days
- 0
- Cooling degree days
- 398
Portal in July
Highs average 92°33° and lows 71°22°, with 5.9 in150 mm of precipitation in a typical July.
- Record high
- 104°40° (2012)
- Record low
- 56°13° (2014)
- Heating degree days
- 0
- Cooling degree days
- 505
Portal in August
Highs average 90°32° and lows 71°22°, with 4.8 in121 mm of precipitation in a typical August.
- Record high
- 102°39° (2002)
- Record low
- 59°15° (2002)
- Heating degree days
- 0
- Cooling degree days
- 480
Portal in September
Highs average 85°30° and lows 65°18°, with 3.5 in89 mm of precipitation in a typical September.
- Record high
- 98°37° (2019)
- Record low
- 42°6° (2001)
- Heating degree days
- 5
- Cooling degree days
- 305
Portal in OctoberThis month
Highs average 77°25° and lows 54°12°, with 3.2 in82 mm of precipitation in a typical October.
- Record high
- 97°36° (2019)
- Record low
- 28°−2° (2001)
- Heating degree days
- 91
- Cooling degree days
- 99
Portal in November
Highs average 68°20° and lows 43°6°, with 2.9 in74 mm of precipitation in a typical November.
- Record high
- 86°30° (2004)
- Record low
- 18°−8° (2008)
- Heating degree days
- 312
- Cooling degree days
- 15
Portal in December
Highs average 60°16° and lows 38°3°, with 3.5 in89 mm of precipitation in a typical December.
- Record high
- 81°27° (2013)
- Record low
- 14°−10° (2022)
- Heating degree days
- 498
- Cooling degree days
- 4