Erwin, TN Weather & Climate Normals
What a normal year in Erwin actually looks like
On the 30-year record NOAA keeps for Erwin, TN, the comfort score comes out to 56/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 6 months a year land in the 55–75°F range this site treats as mild.
How much Erwin's weather actually swings
Average temperatures in Erwin run from 36°F in Jan up to 74°F in Jul, a 37.9°F seasonal swing, a middling gap by national standards.
Erwin, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 47°F | 25°F | 3.46in | 3.4in |
| Feb | 51°F | 27°F | 3.27in | 2.5in |
| Mar | 59°F | 33°F | 3.82in | 0.9in |
| Apr | 68°F | 41°F | 3.99in | 0in |
| May | 76°F | 50°F | 4.83in | 0in |
| Jun | 83°F | 58°F | 5.07in | 0in |
| Jul | 85°F | 62°F | 5.51in | 0in |
| Aug | 85°F | 61°F | 4.76in | 0in |
| Sep | 80°F | 55°F | 3.28in | 0in |
| Oct | 70°F | 43°F | 2.54in | 0in |
| Nov | 59°F | 33°F | 2.83in | 0.1in |
| Dec | 50°F | 28°F | 3.64in | 2.4in |
If you're timing a visit, May, Jun, Jul, Aug, Sep, and Oct are Erwin's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Erwin actually gets
Over a typical year, Erwin sees about 47in of precipitation a year across roughly 138 days with measurable rain or snow, with 9.3in of snow a year.
Erwin against the rest of the country
Out of 4876 cities scored here, Erwin comes in at 811; within TN alone it ranks 11 of 104. Population is about 6,020.
Checking the actual forecast
These figures come from Erwin 1 W, TN US, the NOAA station 0.8 miles from Erwin, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is