Photo: Harrisburg_11 · CC BY 2.0Harrisburg has warmer summer afternoons than 79% of U.S. towns
January nights here settle around 31°. Rain is spread evenly through the year: the wettest month, June, gets little more than the driest, February. Winters are mild: January nights here are milder than in 73% of U.S. towns. Central heating does most of its work from December to February, in months below 50° on average.
A year in Harrisburg at a glance
Each month’s typical high and low, and what it brings.
What stands out about Harrisburg’s climate
Compared with towns across the U.S., with Harrisburg’s place in North Carolina beside it.
What a year in Harrisburg feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 215 frost-free days a year
In half of years the last 32° night comes by April 1 and the first by November 2. Frost and day counts come from NOAA’s station at Concord, NC, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Harrisburg’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 13°. 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 3 inches of snow a winter
Snow, measured at Concord, NC, falls mostly in February. Precipitation (rain plus melted snow) adds up to 45 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 112 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Harrisburg
65% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Concord, NC.
Living with Harrisburg’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
215 frost-free days in zone 8a. The last frost comes by Apr 1 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 2.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 7.5 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Harrisburg from natural hazards, river flooding is the largest share (79%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Harrisburg and its neighbors
Every town next door is within a degree of Harrisburg in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Harrisburg’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Harrisburg, NC | 31° | 90° | 45" | 3.3" |
| Colonial Heights, VA | 29° | 90° | 47" | 3.5" |
| Blytheville, AR | 31° | 90° | 50" | 2.9" |
| Sikeston, MO | 28° | 90° | 49" | 3.1" |
| Newport, TN | 28° | 88° | 47" | 3.3" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Harrisburg averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.1°).
A smaller shift than in 78% 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 Harrisburg compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Harrisburg’s place among North Carolina’s.
Harrisburg weather by month
Highs, lows and precipitation from NOAA’s grid at Harrisburg’s center; snow, wet days and snow on the ground from Concord, NC. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 52° | 31° | 3.6" | 1.1" | 10 | 2 | 35° – 47° |
| February | 56° | 33° | 3.2" | 1.3" | 9 | 1 | 36° – 53° |
| March | 64° | 40° | 3.9" | 0.4" | 10 | 0 | 45° – 60° |
| April | 73° | 48° | 3.7" | 0.0" | 9 | 0 | 56° – 65° |
| May | 80° | 57° | 3.6" | 0.0" | 10 | 0 | 64° – 74° |
| June | 87° | 65° | 4.4" | 0.0" | 11 | 0 | 72° – 80° |
| July | 90° | 69° | 4.1" | 0.0" | 10 | 0 | 76° – 83° |
| August | 89° | 68° | 4.3" | 0.0" | 10 | 0 | 75° – 84° |
| September | 83° | 61° | 4.0" | 0.0" | 8 | 0 | 68° – 78° |
| October | 73° | 49° | 3.3" | 0.0" | 8 | 0 | 58° – 66° |
| November | 63° | 38° | 3.3" | 0.0" | 8 | 0 | 46° – 56° |
| December | 55° | 33° | 3.6" | 0.5" | 10 | 0 | 35° – 55° |
| Year | 72° | 49° | 45.1" | 3.3" | 112 | 3 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 35° to 55°. July is the most reliable, staying within 7°.
Where Harrisburg’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 Harrisburg’s center.
- Snow: Concord, NC.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Concord, NC, 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 Harrisburg’s climate
What is the weather like in Harrisburg?
A typical July afternoon reaches 90°, a January night drops to 31°, and about 3 inches of snow falls in a normal winter. Milder January nights than 73% of U.S. towns; hotter July afternoons than 79% of U.S. towns.
How cold does it get in Harrisburg in winter?
January nights average 31°. About 74 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 35°.
How much snow does Harrisburg get?
About 3.3 inches in a normal winter at Concord, NC, most of it in February, with snow on the ground about 3 days a year.
How hot does it get in Harrisburg?
July, with a typical high of 90° and a low of 69°. About 61 days a year reach 90° and 2 reach 100° (Concord, NC).
When is the first and last frost in Harrisburg?
In half of years the last spring frost (32°) comes by April 1 and the first fall frost by November 2, about 215 frost-free days, at Concord, NC.
What growing zone is Harrisburg in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 13°.
What is the best time of year to visit Harrisburg?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Harrisburg getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 78% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Harrisburg.
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.