PlainClimate
NOAA 1991–2020 normals 65°F annual avg Public-domain federal data

Irwinton, GA Climate

Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score

65°F
Avg annual temp
97/100
Comfort score
46.8"
Annual precip
252d
Growing season

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

The climate verdict for Irwinton

Irwinton, Georgia averages 65°F a year and scores 97/100 on the comfort index - excellent, milder than 98% of U.S. cities.

65°F
yearly average temperature, NOAA normal
97/100
comfort score, milder than 98% of U.S. cities
46.8"
yearly precipitation total
252 days
growing season, frost-free days

Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.

Avg Temperature

65°F (18°C)

Avg High

76°F

Avg Low

54°F

Annual Precip

46.8"

Annual Snow

0.2"

Comfort Score

97/100

Excellent

Climate Comfort Score

97/100

Excellent

Avg Annual Temperature

65°F

30-year mean (NOAA NCEI)

Annual Precipitation

46.8"

Liquid-equivalent total

Comfort score vs national 100-point ceiling (Irwinton) 97.0%
National median (63)

PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Irwinton area.

How Irwinton compares to every U.S. city

Irwinton's comfort score vs. all U.S. cities

PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals

97 Top 2% higher than 98% of 6,915 US cities

0–10: 0 US cities (0%). Below this entry. 10–20: 0 US cities (0%). Below this entry. 20–30: 58 US cities (1%). Below this entry. 30–40: 439 US cities (6%). Below this entry. 40–50: 1,302 US cities (19%). Below this entry. 50–60: 1,433 US cities (21%). Below this entry. 60–70: 1,357 US cities (20%). Below this entry. 70–80: 1,102 US cities (16%). Below this entry. 80–90: 778 US cities (11%). Below this entry. 90–100: 420 US cities (6%). This entry sits in this band. This city 0 100 every U.S. city, bucketed by value

Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020

Warming context for Irwinton

Methodology

Irwinton's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running 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 58°F (14°C) 36°F (2°C) 47°F (8°C)
February 61°F (16°C) 39°F (4°C) 50°F (10°C)
March 69°F (21°C) 45°F (7°C) 57°F (14°C)
April 76°F (24°C) 52°F (11°C) 64°F (18°C)
May 84°F (29°C) 61°F (16°C) 72°F (22°C)
June 89°F (32°C) 68°F (20°C) 79°F (26°C)
July 92°F (33°C) 72°F (22°C) 82°F (28°C)
August 90°F (32°C) 71°F (21°C) 80°F (27°C)
September 86°F (30°C) 66°F (19°C) 76°F (24°C)
October 77°F (25°C) 55°F (13°C) 66°F (19°C)
November 67°F (20°C) 44°F (6°C) 56°F (13°C)
December 60°F (16°C) 39°F (4°C) 49°F (10°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 4.3"

8.6 days with precipitation

February 4.2"

Snow: 0.2"

8.4 days with precipitation

March 4.3"

7.6 days with precipitation

April 3.7"

7.3 days with precipitation

May 3.1"

6.1 days with precipitation

June 4.2"

9.5 days with precipitation

July 4.4"

9.4 days with precipitation

August 4.8"

9.8 days with precipitation

September 3.8"

6.8 days with precipitation

October 2.5"

5.7 days with precipitation

November 2.8"

6.4 days with precipitation

December 4.7"

6.8 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

November 19

50% probability date

Last Spring Freeze

March 12

50% probability date

Growing Season

252 days

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

2,241

Higher = more heating needed

Cooling Degree Days

2,183

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

What Irwinton's climate means for you

Irwinton runs 65°F a year - peaking in July, coldest in January.

  • Gardeners get about 252 frost-free days, with the last spring freeze near March 12 - plan the planting calendar around it, not the regional average.
  • Energy bills track 2,241 heating and 2,183 cooling degree days a year, higher means the furnace or AC runs more.
  • Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings

These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.

Climate Guides

Climate Insight: Irwinton, GA

The NOAA 1991–2020 climate normals describe Irwinton, Georgia as a location with an annual average temperature of 65°F, ranging from a mean daily high of 76°F to a mean daily low of 54°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00094594, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Anyone planning to live, garden, or travel in Irwinton should weigh precipitation alongside temperature: the annual average runs 46.8 inches, with negligible snowfall. The frost-free season averages 252 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 12 and the first fall freeze near November 19. And on the energy front, 2,241 heating degree days and 2,183 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Irwinton scores 97/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.

Frequently Asked Questions

What is the average temperature in Irwinton, GA?
The average annual temperature in Irwinton, Georgia is 65°F. The warmest month averages 92°F (33°C) and the coldest averages 36°F (2°C).
How much rain does Irwinton get?
Irwinton receives 46.8 inches of precipitation annually, including 0.2 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Irwinton?
Irwinton has a climate comfort score of 97/100 (Excellent), milder than 98% of U.S. cities in the PlainClimate database.
When is the growing season in Irwinton?
Irwinton has approximately 252 frost-free days per year, with the last spring freeze around March 12 and the first fall freeze around November 19.
How much energy does heating and cooling require in Irwinton?
Irwinton has 2,241 heating degree days and 2,183 cooling degree days annually, a fairly balanced heating/cooling split. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Irwinton climate data come from?
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00094594 near Irwinton.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00094594. For informational purposes only.

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

Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.