SC
Hartsville and Sumter have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Hartsville | Metric | Sumter |
|---|---|---|
| 213 days | Sunny daysclear or partly cloudy skies | 213 days |
| 45 in | Precipitationper year | 44 in |
| 122 days | Wet daysrain or snow per year | 122 days |
| 1 in | Snowfallper year | 1 in |
| 73 days | Hot daysabove 90 °F | 58 days |
| 61 days | Freezing nightsat or below 32 °F | 54 days |
| 70% | Humidityaverage relative | 70% |
| 63 °F | Average temperatureyear round | 62 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hartsville high | 55 | 59 | 66 | 76 | 82 | 89 | 92 | 90 | 85 | 76 | 65 | 58 |
| Sumter high | 55 | 59 | 67 | 75 | 82 | 87 | 90 | 89 | 84 | 75 | 65 | 58 |
| Hartsville low | 32 | 34 | 40 | 48 | 58 | 67 | 70 | 69 | 63 | 51 | 40 | 35 |
| Sumter low | 33 | 35 | 41 | 50 | 58 | 66 | 70 | 69 | 63 | 51 | 40 | 35 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hartsville | 3.5 | 3.3 | 3.5 | 3.4 | 3.2 | 4.3 | 4.8 | 4.9 | 4.3 | 3.3 | 2.9 | 3.7 |
| Sumter | 3.4 | 3.3 | 3.4 | 3.4 | 3.0 | 4.2 | 4.6 | 4.6 | 4.0 | 3.4 | 2.8 | 3.7 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hartsville | 17 | 15 | 18 | 19 | 19 | 17 | 17 | 18 | 18 | 20 | 19 | 17 |
| Sumter | 17 | 15 | 18 | 19 | 19 | 17 | 18 | 18 | 18 | 20 | 19 | 17 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Hartsville vs another city
- Hartsville vs Darlington, SC
- Hartsville vs Florence, SC
- Hartsville vs Cheraw, SC
- Hartsville vs Bennettsville, SC
- Hartsville vs Camden, SC
- Hartsville vs New York, NY
- Hartsville vs Los Angeles, CA
- Hartsville vs Chicago, IL
- Hartsville vs Houston, TX
- Hartsville vs Phoenix, AZ
- Hartsville vs Philadelphia, PA
Sumter vs another city
- Sumter vs Camden, SC
- Sumter vs Lugoff, SC
- Sumter vs Columbia, SC
- Sumter vs Woodfield, SC
- Sumter vs Dentsville, SC
- Sumter vs Forest Acres, SC
- Sumter vs New York, NY
- Sumter vs Los Angeles, CA
- Sumter vs Chicago, IL
- Sumter vs Houston, TX
- Sumter vs Phoenix, AZ
- Sumter vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).