Photo: Ser Amantio di Nicolao · CC BY-SA 3.0Summer afternoons in Holly Hill are warmer than in 90% of U.S. towns
The coldest hours of a January night bottom out at 36° on average. In January, nights here are milder than in 83% of U.S. towns. Decade by decade the climate has edged up, 1.1° above 1901–2000. Homes need heating from January, the months averaging under 50°.
A year in Holly Hill at a glance
Each month’s typical high and low, and what it brings.
What stands out about Holly Hill’s climate
Compared with towns across the U.S., with Holly Hill’s place in South Carolina beside it.
What a year in Holly Hill feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 237 frost-free days a year
In half of years the last 32° night comes by March 22 and the first by November 12. Frost and day counts come from NOAA’s station at Holly Hill 1 Sw, SC, 0.8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Holly Hill’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 18°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 49 inches of rain a year
August is the wettest month and November the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Holly Hill
54% of the work is heating. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Holly Hill 1 Sw, SC.
Living with Holly Hill’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
237 frost-free days in zone 8b. The last frost comes by Mar 22 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 12.
Months with highs of 62–84° and lows of 40° or more: March, April, October and November.
Parks & trails →Of the yearly building losses FEMA expects in Holly Hill from natural hazards, earthquakes are the largest share (40%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Holly Hill and similar climates
TownRatings has no climate map of the towns around Holly Hill yet.
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Holly Hill averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.2°).
A smaller shift than in 71% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Holly Hill compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Holly Hill’s place among South Carolina’s.
Holly Hill weather by month
Highs, lows and precipitation from NOAA’s grid at Holly Hill’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 59° | 36° | 3.4" | 42° – 54° |
| February | 63° | 39° | 3.4" | 43° – 60° |
| March | 70° | 44° | 3.6" | 50° – 64° |
| April | 78° | 51° | 3.3" | 59° – 69° |
| May | 85° | 60° | 3.6" | 68° – 77° |
| June | 90° | 68° | 5.4" | 75° – 83° |
| July | 93° | 72° | 5.4" | 80° – 85° |
| August | 91° | 71° | 5.7" | 78° – 84° |
| September | 86° | 66° | 4.7" | 73° – 80° |
| October | 78° | 54° | 4.1" | 62° – 70° |
| November | 68° | 44° | 2.9" | 51° – 62° |
| December | 61° | 39° | 3.6" | 41° – 61° |
| Year | 77° | 54° | 49.1" |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 41° to 61°. July is the most reliable, staying within 5°.
Where Holly Hill’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Holly Hill’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Holly Hill 1 Sw, SC, 0.8 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Holly Hill’s climate
What is the weather like in Holly Hill?
A typical July afternoon reaches 93°, a January night drops to 36°. Milder January nights than 83% of U.S. towns; hotter July afternoons than 90% of U.S. towns.
How cold does it get in Holly Hill in winter?
January nights average 36°. About 47 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 42°.
How hot does it get in Holly Hill?
July, with a typical high of 93° and a low of 72°. About 78 days a year reach 90° and 2 reach 100° (Holly Hill 1 Sw, SC).
When is the first and last frost in Holly Hill?
In half of years the last spring frost (32°) comes by March 22 and the first fall frost by November 12, about 237 frost-free days, at Holly Hill 1 Sw, SC.
What growing zone is Holly Hill in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 18°.
What is the best time of year to visit Holly Hill?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Holly Hill getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 71% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Holly Hill.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.