Climate Comfort Score
78/100
Good
NOAA 1991–2020 normals 65°F annual avg Public-domain federal data
Jamestown, SC Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 65°F
- Avg annual temp
- 78/100
- Comfort score
- 51.9"
- Annual precip
- 236d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Jamestown
Jamestown, South Carolina averages 65°F a year and scores 78/100 on the comfort index - good, milder than 74% of U.S. cities.
- 65°F
- average temperature, NOAA 1991-2020 normal
- 78/100
- comfort score, milder than 74% of U.S. cities
- 51.9"
- annual precipitation
- 236 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
77°F
Avg Low
52°F
Annual Precip
51.9"
Comfort Score
78/100
Good
Avg Annual Temperature
65°F
30-year mean (NOAA NCEI)
Annual Precipitation
51.9"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Jamestown) 78.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Jamestown area.
How Jamestown compares to every U.S. city
Jamestown's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
78 Top 26% higher than 74% 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 Jamestown
MethodologyZooming out from Jamestown's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 60°F (15°C) | 35°F (2°C) | 47°F (8°C) | 3.5" | 14.8 | 0.0 |
| February | 63°F (17°C) | 37°F (3°C) | 50°F (10°C) | 3.3" | 9.8 | 0.0 |
| March | 69°F (21°C) | 42°F (6°C) | 56°F (13°C) | 3.8" | 6.5 | 0.2 |
| April | 78°F (26°C) | 50°F (10°C) | 64°F (18°C) | 3.3" | 0.1 | 0.8 |
| May | 84°F (29°C) | 59°F (15°C) | 72°F (22°C) | 3.3" | 0.0 | 8.0 |
| June | 90°F (32°C) | 68°F (20°C) | 79°F (26°C) | 5.5" | 0.0 | 18.7 |
| July | 93°F (34°C) | 71°F (22°C) | 82°F (28°C) | 6.0" | 0.0 | 26.2 |
| August | 91°F (33°C) | 70°F (21°C) | 81°F (27°C) | 6.5" | 0.0 | 23.1 |
| September | 86°F (30°C) | 65°F (18°C) | 76°F (24°C) | 5.3" | 0.0 | 11.7 |
| October | 78°F (26°C) | 53°F (12°C) | 66°F (19°C) | 4.6" | 0.0 | 1.9 |
| November | 69°F (21°C) | 42°F (6°C) | 56°F (13°C) | 3.3" | 6.9 | 0.0 |
| December | 62°F (16°C) | 38°F (3°C) | 50°F (10°C) | 3.7" | 9.4 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 3.5"
February 3.3"
March 3.8"
April 3.3"
May 3.3"
June 5.5"
July 6.0"
August 6.5"
September 5.3"
October 4.6"
November 3.3"
December 3.7"
Frost Dates & Growing Season
First Fall Freeze
November 13
50% probability date
Last Spring Freeze
March 22
50% probability date
Growing Season
236 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,274
Higher = more heating needed
Cooling Degree Days
2,161
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Jamestown's climate means for you
Jamestown runs 65°F a year - peaking in July, coldest in January.
- Gardeners get about 236 frost-free days, with the last spring freeze near March 22 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,274 heating and 2,161 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: Jamestown, SC
In Jamestown, South Carolina, the NOAA 1991–2020 climate normals put the annual average temperature at 65°F, ranging from a mean daily high of 77°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 USC00384449, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Jamestown sees about 51.9 inches of precipitation a year, predominantly as rainfall. The frost-free season averages 236 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 13. On the energy side, 2,274 heating degree days and 2,161 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Jamestown scores 78/100 (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 Jamestown, SC? ▼
The average annual temperature in Jamestown, South Carolina is 65°F. The warmest month averages 93°F (34°C) and the coldest averages 35°F (2°C).
How much rain does Jamestown get? ▼
Jamestown receives 51.9 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Jamestown? ▼
Jamestown has a climate comfort score of 78/100 (Good), milder than 74% of U.S. cities in the PlainClimate database.
When is the growing season in Jamestown? ▼
Jamestown has approximately 236 frost-free days per year, with the last spring freeze around March 22 and the first fall freeze around November 13.
How much energy does heating and cooling require in Jamestown? ▼
Jamestown has 2,274 heating degree days and 2,161 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 Jamestown climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00384449 near Jamestown.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00384449. 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.