PlainClimate
2026 data Public-data reference. official source

Alto, GA Climate

Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →

30-year climate normals from 1 weather station (1991-2020).

Alto, Georgia has an average annual temperature of 60°F and a climate comfort score of 62/100 (Good). Annual precipitation totals N/A. Based on NOAA 30-year normals (1991–2020).

Avg Temperature

60°F (15°C)

Avg High

71°F

Avg Low

48°F

Annual Precip

N/A

Comfort Score

62/100

Good

Climate Comfort Score

62/100

Good

Avg Annual Temperature

60°F

30-year mean (NOAA NCEI)

Annual Precipitation

N/A

Liquid-equivalent total

Comfort score vs national 100-point ceiling (Alto) 62.0%
National median (≈55)

PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Alto area.

Warming context for Alto

Methodology

How the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Alto captures average conditions across the spread shown — the most recent decade is warmer than the 30-year mean.

Warming context — U.S. vs global, with Paris reference lines Anomaly chart from 1900 to 2024. Local series shows warming of 0.11 °C per decade versus a global rate of 0.11 °C per decade (ratio 1.00). Paris Agreement thresholds at 1.5 and 2.0 °C are dashed. -1.0°C -0.5°C +0.0°C +0.5°C +1.0°C +1.5°C +2.0°C +2.5°C Paris 1.5°C Paris 2.0°C 1900192019401960198020002020
  • United States land mean (NOAA NCEI) +0.11 °C/decade
  • Global anomaly (NASA GISTEMP) +0.11 °C/decade
  • Paris Agreement thresholds 1.5°C / 2.0°C
Sources: NOAA NCEI, NASA GISTEMP. Paris thresholds per IPCC AR6 WG1.

Monthly Temperatures

Average daily high and low temperatures by month

Month Avg High Avg Low Mean
January 52°F (11°C) 30°F (-1°C) 41°F (5°C)
February 56°F (13°C) 32°F (0°C) 44°F (7°C)
March 64°F (18°C) 38°F (3°C) 51°F (11°C)
April 72°F (22°C) 46°F (8°C) 59°F (15°C)
May 78°F (26°C) 55°F (13°C) 66°F (19°C)
June 84°F (29°C) 64°F (18°C) 74°F (23°C)
July 87°F (30°C) 67°F (20°C) 77°F (25°C)
August 86°F (30°C) 67°F (19°C) 76°F (25°C)
September 82°F (28°C) 61°F (16°C) 71°F (22°C)
October 73°F (23°C) 49°F (10°C) 61°F (16°C)
November 63°F (17°C) 38°F (3°C) 50°F (10°C)
December 54°F (12°C) 33°F (0°C) 43°F (6°C)

Monthly Precipitation

Average monthly rainfall

January N/A
February N/A
March N/A
April N/A
May N/A
June N/A
July N/A
August N/A
September N/A
October N/A
November N/A
December N/A

Frost Dates & Growing Season

First Fall Freeze

November 4

50% probability date

Last Spring Freeze

April 4

50% probability date

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

3,341

Higher = more heating needed

Cooling Degree Days

1,365

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

Related Data

Climate Guides

Climate Insight: Alto, GA

The NOAA 1991–2020 climate normals describe Alto, Georgia as a location with an annual average temperature of 60°F, ranging from a mean daily high of 71°F to a mean daily low of 48°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00090236, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Alto receives roughly an uncharted amount of precipitation each year, predominantly as rainfall. Growing-season length varies with elevation and microclimate, with the last spring freeze near April 4 and the first fall freeze near November 4. For energy use, 3,341 heating degree days and 1,365 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Alto scores 62/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows — shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.

Frequently Asked Questions

What is the average temperature in Alto, GA?
The average annual temperature in Alto, Georgia is 60°F. The warmest month averages 87°F (30°C) and the coldest averages 30°F (-1°C).
How much rain does Alto get?
Alto receives an unknown amount of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Alto?
Alto has a climate comfort score of 62/100 (Good). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Alto?
Growing season data is not available for Alto.
How much energy does heating and cooling require in Alto?
Alto has 3,341 heating degree days and 1,365 cooling degree days annually. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Alto climate data come from?
All climate data comes from NOAA U.S. Climate Normals v1.0.1, covering the 30-year period from 1991 to 2020. Data is collected from weather station USC00090236. These 30-year averages are the standard reference for typical weather conditions.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00090236. For informational purposes only.

Related

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial