Erwin, NC climate
Erwin has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 91°, a January night drops to 32°, and about 2 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Erwin feels like
Winter
Spring
Summer
Fall
Erwin 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 | 54° | 32° | 3.6" | 1.0" | 10 | 0 | 38° – 49° |
| February | 57° | 34° | 3.1" | 0.2" | 9 | 0 | 37° – 54° |
| March | 65° | 40° | 3.8" | 0.3" | 10 | 0 | 46° – 61° |
| April | 74° | 49° | 3.5" | 0 | 8 | 0 | 57° – 67° |
| May | 81° | 58° | 3.7" | 0 | 9 | 0 | 64° – 76° |
| June | 88° | 66° | 4.7" | 0 | 9 | 0 | 73° – 81° |
| July | 91° | 70° | 5.3" | 0 | 11 | 0 | 77° – 83° |
| August | 89° | 69° | 5.1" | 0 | 11 | 0 | 76° – 84° |
| September | 83° | 63° | 5.4" | 0 | 8 | 0 | 69° – 79° |
| October | 74° | 50° | 3.3" | 0 | 7 | 0 | 58° – 68° |
| November | 64° | 40° | 3.4" | 0 | 8 | 0 | 47° – 58° |
| December | 56° | 35° | 3.5" | 0.6" | 10 | 0 | 35° – 57° |
| Year | 73° | 50° | 48.4" | 2.1" | 111 | 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 Erwin
Erwin gets 48 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 111 days a year.
About 226 frost-free days a year
In half of years the last 32° night comes by March 28 and the first one by November 7. That leaves about 226 frost-free days for gardens, longer than 84% of U.S. towns.
Heating and cooling a home in Erwin
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Erwin, 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.
How Erwin 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 Erwin averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.2°). The shift is smaller than in 76% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Erwin’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 35° to 57°. July is the most reliable, staying within 6°.
Common questions about Erwin’s climate
What is the coldest month in Erwin?
January, with a typical high of 54° and a low of 32°.
What is the hottest month in Erwin?
July, with a typical high of 91° and a low of 70°. About 49 days a year reach 90°.
How much snow does Erwin get?
About 2 inches in a normal winter, most of it in January.
When is the first frost in Erwin?
In half of years the first 32° night comes by November 7, and the last spring frost by March 28.
What is the rainiest month in Erwin?
September, with 5.4 inches of rain and melted snow. The year totals 48 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Erwin itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Dunn 4 Nw, NC (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.