Portal, GA climate
Portal has mild winters and hot summers. A typical July afternoon reaches 92°, a January night drops to 37°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Portal feels like
Winter
Spring
Summer
Fall
Portal weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 60° | 37° | 4.0" | 43° – 55° |
| February | 64° | 40° | 3.8" | 44° – 60° |
| March | 71° | 46° | 3.9" | 51° – 65° |
| April | 78° | 52° | 3.2" | 60° – 71° |
| May | 85° | 60° | 3.2" | 69° – 78° |
| June | 90° | 68° | 5.2" | 75° – 83° |
| July | 92° | 71° | 5.5" | 79° – 85° |
| August | 91° | 70° | 5.1" | 78° – 83° |
| September | 86° | 65° | 3.7" | 73° – 81° |
| October | 78° | 55° | 2.9" | 62° – 71° |
| November | 69° | 44° | 2.8" | 52° – 63° |
| December | 62° | 39° | 3.7" | 42° – 61° |
| Year | 77° | 54° | 47.0" |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Portal
Portal gets 47 inches of rain and melted snow a year. July is the wettest month and November the driest.
About 248 frost-free days a year
In half of years the last 32° night comes by March 14 and the first one by November 15. That leaves about 248 frost-free days for gardens, longer than 90% of U.S. towns.
Heating and cooling a home in Portal
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Portal, 52% of that work is heating and 48% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Portal compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Portal averaged 1.0° warmer than the 1900s. The biggest change is in December (+1.9°). The shift is smaller than in 73% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Portal’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 42° to 61°. August is the most reliable, staying within 6°.
Common questions about Portal’s climate
What is the coldest month in Portal?
January, with a typical high of 60° and a low of 37°.
What is the hottest month in Portal?
July, with a typical high of 92° and a low of 71°. About 74 days a year reach 90°.
When is the first frost in Portal?
In half of years the first 32° night comes by November 15, and the last spring frost by March 14.
What is the rainiest month in Portal?
July, with 5.5 inches of rain and melted snow. The year totals 47 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Portal itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Rocky Ford 4se, GA (11 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.