Harper, TX climate
Harper has mild winters and hot summers. A typical July afternoon reaches 93°, a January night drops to 35°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Harper feels like
Winter
Spring
Summer
Fall
Harper 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° | 35° | 1.5" | 0 | 3 | 0 | 43° – 53° |
| February | 64° | 39° | 1.6" | 0 | 4 | 0 | 45° – 59° |
| March | 71° | 46° | 2.4" | 0 | 4 | 0 | 52° – 63° |
| April | 78° | 52° | 2.2" | 0 | 4 | 0 | 59° – 71° |
| May | 84° | 61° | 4.1" | 0 | 6 | 0 | 68° – 77° |
| June | 90° | 68° | 3.0" | 0 | 4 | 0 | 75° – 82° |
| July | 93° | 69° | 1.9" | 0 | 4 | 0 | 77° – 85° |
| August | 94° | 69° | 2.3" | 0 | 3 | 0 | 77° – 86° |
| September | 87° | 63° | 3.4" | 0 | 5 | 0 | 71° – 80° |
| October | 79° | 54° | 2.8" | 0 | 4 | 0 | 64° – 71° |
| November | 68° | 44° | 2.0" | 0 | 4 | 0 | 50° – 61° |
| December | 61° | 36° | 1.5" | 0 | 3 | 0 | 43° – 51° |
| Year | 77° | 53° | 28.7" | 0.0" | 47 | 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 Harper
Harper gets 29 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 47 days a year.
About 243 frost-free days a year
In half of years the last 32° night comes by March 15 and the first one by November 15. That leaves about 243 frost-free days for gardens, longer than 89% of U.S. towns.
Heating and cooling a home in Harper
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Harper, 51% of that work is heating and 49% 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 Harper 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 Harper averaged 1.0° warmer than the 1900s. The biggest change is in March (+1.6°). The shift is smaller than in 72% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Harper’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 45° to 59°. October is the most reliable, staying within 7°.
Common questions about Harper’s climate
What is the coldest month in Harper?
January, with a typical high of 60° and a low of 35°.
What is the hottest month in Harper?
August, with a typical high of 94° and a low of 69°. About 86 days a year reach 90°.
How much snow does Harper get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Harper?
In half of years the first 32° night comes by November 15, and the last spring frost by March 15.
What is the rainiest month in Harper?
May, with 4.1 inches of rain and melted snow. The year totals 29 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Harper itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Cottonwood 2nw, TX (9 mi, snow) and Harper 3ene, TX (5 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.