Half Moon, NC climate
Half Moon has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 89°, a January night drops to 33°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Half Moon feels like
Winter
Spring
Summer
Fall
Half Moon weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 56° | 33° | 3.9" | 0.4" | 10 | 0 | 39° – 51° |
| February | 59° | 36° | 3.5" | 0.2" | 10 | 0 | 38° – 57° |
| March | 66° | 41° | 3.9" | 0 | 10 | 0 | 47° – 60° |
| April | 74° | 49° | 3.6" | 0 | 8 | 0 | 58° – 67° |
| May | 80° | 58° | 4.4" | 0 | 10 | 0 | 64° – 75° |
| June | 87° | 66° | 5.5" | 0 | 12 | 0 | 72° – 81° |
| July | 89° | 70° | 6.5" | 0 | 13 | 0 | 76° – 82° |
| August | 88° | 69° | 6.8" | 0 | 14 | 0 | 76° – 81° |
| September | 83° | 64° | 7.3" | 0 | 11 | 0 | 70° – 78° |
| October | 75° | 52° | 3.8" | 0 | 10 | 0 | 60° – 69° |
| November | 66° | 42° | 3.5" | 0 | 9 | 0 | 48° – 59° |
| December | 58° | 36° | 3.8" | 0 | 10 | 0 | 36° – 59° |
| Year | 73° | 51° | 56.5" | 0.6" | 128 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Half Moon
Half Moon gets 57 inches of rain and melted snow a year. September is the wettest month and November the driest. Rain or snow falls on about 128 days a year.
About 224 frost-free days a year
In half of years the last 32° night comes by March 31 and the first one by November 8. That leaves about 224 frost-free days for gardens, longer than 84% of U.S. towns.
Heating and cooling a home in Half Moon
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Half Moon, 60% of that work is heating and 40% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Half Moon and its neighbors
Half Moon borders 1 town with climate data. January nights across them vary by 0.8°. Jacksonville has both the coldest January nights (34°) and the hottest July afternoons (89°). Half Moon’s January low is 33° and its July high 89°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Half Moon compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Half Moon averaged 1.0° warmer than the 1900s. The biggest change is in December (+1.8°). The shift is smaller than in 74% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Half Moon’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 36° to 59°. August is the most reliable, staying within 5°.
Common questions about Half Moon’s climate
What is the coldest month in Half Moon?
January, with a typical high of 56° and a low of 33°.
What is the hottest month in Half Moon?
July, with a typical high of 89° and a low of 70°. About 56 days a year reach 90°.
How much snow does Half Moon get?
Almost none. A normal year brings 0.6 inches.
When is the first frost in Half Moon?
In half of years the first 32° night comes by November 8, and the last spring frost by March 31.
What is the rainiest month in Half Moon?
September, with 7.3 inches of rain and melted snow. The year totals 57 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Half Moon itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at New River Mcaf, NC (10 mi, snow) and Jacksonville Eoc, NC (4 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.