Rock Hill, LA climate
Rock Hill has mild winters and hot summers, with plenty of rain. A typical July afternoon reaches 93°, a January night drops to 38°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Rock Hill feels like
Winter
Spring
Summer
Fall
Rock Hill 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 | 60° | 38° | 5.9" | 0 | 9 | 0 | 43° – 56° |
| February | 64° | 42° | 5.1" | 0.1" | 8 | 0 | 44° – 62° |
| March | 71° | 48° | 5.2" | 0 | 8 | 0 | 54° – 68° |
| April | 78° | 55° | 5.3" | 0 | 7 | 0 | 61° – 71° |
| May | 85° | 63° | 4.6" | 0 | 7 | 0 | 71° – 77° |
| June | 90° | 70° | 4.9" | 0 | 9 | 0 | 77° – 84° |
| July | 93° | 72° | 4.6" | 0 | 9 | 0 | 80° – 86° |
| August | 93° | 72° | 4.0" | 0 | 8 | 0 | 78° – 88° |
| September | 89° | 66° | 4.1" | 0 | 6 | 0 | 75° – 82° |
| October | 80° | 55° | 4.8" | 0 | 6 | 0 | 64° – 74° |
| November | 69° | 46° | 5.3" | 0.3" | 7 | 0 | 52° – 62° |
| December | 61° | 40° | 5.9" | 0 | 9 | 0 | 42° – 58° |
| Year | 78° | 56° | 59.7" | 0.4" | 94 | 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 Rock Hill
Rock Hill gets 60 inches of rain and melted snow a year. December is the wettest month and August the driest. Rain or snow falls on about 94 days a year.
About 260 frost-free days a year
In half of years the last 32° night comes by March 2 and the first one by November 17. That leaves about 260 frost-free days for gardens, longer than 92% of U.S. towns.
Heating and cooling a home in Rock Hill
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Rock Hill, 42% of that work is heating and 58% 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.
How Rock Hill 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 Rock Hill averaged 0.6° warmer than the 1900s. The biggest change is in February (+1.3°). The shift is smaller than in 93% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Rock Hill’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 44° to 62°. July is the most reliable, staying within 7°.
Common questions about Rock Hill’s climate
What is the coldest month in Rock Hill?
January, with a typical high of 60° and a low of 38°.
What is the hottest month in Rock Hill?
August, with a typical high of 93° and a low of 72°. About 104 days a year reach 90°.
How much snow does Rock Hill get?
Almost none. A normal year brings 0.4 inches.
When is the first frost in Rock Hill?
In half of years the first 32° night comes by November 17, and the last spring frost by March 2.
What is the rainiest month in Rock Hill?
December, with 5.9 inches of rain and melted snow. The year totals 60 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Rock Hill itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Alexandria, LA (11 mi, snow) and Alexandria Intl Airport, LA (7 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.