Portland, TN Weather & Climate Normals
Portland's real weather, in one number
Portland, TN scores 45/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Portland's hottest and coldest months
Portland's hottest month is Jul, averaging 79°F; its coldest is Jan, averaging 36°F, a 42.7°F swing across the year, a middling gap by national standards.
Portland's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 45°F | 27°F | 4.2in | 0.2in |
| Feb | 50°F | 30°F | 4.69in | 1.5in |
| Mar | 59°F | 37°F | 5.08in | 0.3in |
| Apr | 70°F | 47°F | 5.24in | 0in |
| May | 78°F | 57°F | 5.8in | 0in |
| Jun | 85°F | 65°F | 4.36in | 0in |
| Jul | 89°F | 69°F | 4.57in | 0in |
| Aug | 88°F | 67°F | 4.15in | 0in |
| Sep | 82°F | 60°F | 3.64in | 0in |
| Oct | 71°F | 48°F | 3.69in | 0in |
| Nov | 59°F | 37°F | 3.78in | 0in |
| Dec | 49°F | 30°F | 5.11in | 0in |
Apr, May, Sep, and Oct are the best time to see Portland at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in Portland
Portland averages 54.31in of precipitation a year across roughly 119 days with measurable rain or snow, and 2in of snow a year.
Where Portland ranks
Portland ranks 3403 of 4876 US cities in this dataset for comfort score, and 80 of 104 within TN. About 13,651 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Portland Sewage Plt, TN US, 0.7 miles from Portland, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station