Climate Comfort Score
88/100
Excellent
NOAA 1991–2020 normals 63°F annual avg Public-domain federal data
- 63°F
- Avg annual temp
- 88/100
- Comfort score
- 49.3"
- Annual precip
- 234d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Marion
Marion, South Carolina averages 63°F a year and scores 88/100 on the comfort index - excellent, milder than 92% of U.S. cities.
- 63°F
- average temperature, NOAA 1991-2020 normal
- 88/100
- comfort score, milder than 92% of U.S. cities
- 49.3"
- precipitation, annual total
- 234 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
63°F (17°C)
Avg High
74°F
Avg Low
52°F
Annual Precip
49.3"
Comfort Score
88/100
Excellent
Avg Annual Temperature
63°F
30-year mean (NOAA NCEI)
Annual Precipitation
49.3"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Marion) 88.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Marion area.
How Marion compares to every U.S. city
Marion's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
88 Top 8% higher than 92% of 6,915 US cities
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 Marion
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Marion's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs warmer than the 30-year mean.
- 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 56°F (13°C) | 34°F (1°C) | 45°F (7°C) | 3.5" | 15.3 | 0.0 |
| February | 60°F (15°C) | 37°F (3°C) | 48°F (9°C) | 3.2" | 10.5 | 0.0 |
| March | 67°F (19°C) | 42°F (6°C) | 55°F (13°C) | 3.5" | 5.3 | 0.0 |
| April | 75°F (24°C) | 49°F (10°C) | 62°F (17°C) | 3.4" | 0.6 | 0.4 |
| May | 82°F (28°C) | 59°F (15°C) | 71°F (21°C) | 3.6" | 0.0 | 3.3 |
| June | 88°F (31°C) | 67°F (20°C) | 78°F (25°C) | 5.0" | 0.0 | 13.2 |
| July | 91°F (33°C) | 71°F (22°C) | 81°F (27°C) | 5.2" | 0.0 | 19.9 |
| August | 89°F (32°C) | 70°F (21°C) | 79°F (26°C) | 5.5" | 0.0 | 15.5 |
| September | 84°F (29°C) | 64°F (18°C) | 74°F (23°C) | 6.0" | 0.0 | 6.3 |
| October | 76°F (24°C) | 52°F (11°C) | 64°F (18°C) | 3.3" | 0.3 | 0.2 |
| November | 66°F (19°C) | 42°F (6°C) | 54°F (12°C) | 3.3" | 6.6 | 0.0 |
| December | 59°F (15°C) | 37°F (3°C) | 48°F (9°C) | 3.7" | 10.7 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 3.5"
February 3.2"
March 3.5"
April 3.4"
May 3.6"
June 5.0"
July 5.2"
August 5.5"
September 6.0"
October 3.3"
November 3.3"
December 3.7"
Frost Dates & Growing Season
First Fall Freeze
November 11
50% probability date
Last Spring Freeze
March 22
50% probability date
Growing Season
234 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,582
Higher = more heating needed
Cooling Degree Days
1,944
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Marion's climate means for you
Marion runs 63°F a year - peaking in July, coldest in January.
- Gardeners get about 234 frost-free days, with the last spring freeze near March 22 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,582 heating and 1,944 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: Marion, SC
In Marion, South Carolina, the NOAA 1991–2020 climate normals put the annual average temperature at 63°F, ranging from a mean daily high of 74°F to a mean daily low of 52°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00385509, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Marion receives roughly 49.3 inches of precipitation each year, predominantly as rainfall. The frost-free season averages 234 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 22 and the first fall freeze near November 11. For energy use, 2,582 heating degree days and 1,944 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Marion scores 88/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Marion, SC? ▼
The average annual temperature in Marion, South Carolina is 63°F. The warmest month averages 91°F (33°C) and the coldest averages 34°F (1°C).
How much rain does Marion get? ▼
Marion receives 49.3 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Marion? ▼
Marion has a climate comfort score of 88/100 (Excellent), milder than 92% of U.S. cities in the PlainClimate database.
When is the growing season in Marion? ▼
Marion has approximately 234 frost-free days per year, with the last spring freeze around March 22 and the first fall freeze around November 11.
How much energy does heating and cooling require in Marion? ▼
Marion has 2,582 heating degree days and 1,944 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 Marion climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00385509 near Marion.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00385509. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
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.