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Best time to visit · Tennessee, United States
October is the best time to visit Knoxville on the climate data: October scores 89/100, with highs around 73°F (23°C) and 3.3 in (83 mm) of rain. April & May, September and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
Highs run from 47°F to 89°F across the year, and the yearly total is about 51.5 in (1308 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 47°F8°C | 51°F11°C | 60°F16°C | 70°F21°C | 78°F26°C | 86°F30°C | 89°F32°C | 89°F32°C | 84°F29°C | 73°F23°C | 61°F16°C | 51°F11°C |
| Avg low | 29°F-1°C | 32°F0°C | 39°F4°C | 48°F9°C | 58°F14°C | 66°F19°C | 69°F21°C | 68°F20°C | 61°F16°C | 50°F10°C | 38°F4°C | 33°F0°C |
| Rain | 4.2 in106 mm | 4.8 in121 mm | 4.3 in110 mm | 4.6 in118 mm | 4.1 in104 mm | 4.3 in110 mm | 5.5 in140 mm | 3.7 in94 mm | 3.9 in98 mm | 3.3 in83 mm | 3.9 in100 mm | 4.9 in124 mm |
| Humidity | 82% | 82% | 80% | 77% | 77% | 74% | 73% | 70% | 69% | 71% | 74% | 82% |
| Cloud | 61% | 65% | 62% | 57% | 59% | 57% | 60% | 55% | 50% | 48% | 49% | 63% |
| Comfort | 53 | 57 | 74 | 82 | 77 | 68 | 58 | 66 | 78 | 89 | 80 | 57 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~424 m (1,391 ft) to Knoxville's ~275 m (902 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 47–51°F (8–11°C) and lows down to 29°F (-1°C). It's the wettest season, with about 13.8 in (351 mm) of rain, 27% of the year's total. Nights dip below freezing in January. Comfort scores bottom out in December – February; the season averages 56/100.
Temperatures climb through the season, from 60°F highs in March to 78°F by May. About 13.1 in (332 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 39°F (4°C). April & May score well without being the very best (season average 78/100).
Peak warmth: highs of 86–89°F (30–32°C). About 13.5 in (344 mm) of rain falls across these months, 26% of the year's total. Lows bottom out around 66°F (19°C). Comfort scores sit mid-table, averaging 64/100.
Temperatures slide from 84°F highs in September to 61°F by November. It's the driest season, with only about 11.1 in (281 mm) of rain, 21% of the year's total. Lows bottom out around 38°F (4°C). Comfort peaks here: October ranks with the year's best, and the season averages 82/100.
By comfort score: 5 Great, 3 Good and 4 Fair. Great months: April & May and September – November. Tap a month for its own guide.
October is the best time to visit Knoxville on the climate data: October scores 89/100, with highs around 73°F (23°C) and 3.3 in (83 mm) of rain. April & May, September and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
July is the wettest month, averaging about 5.5 in (140 mm) of rain. October is the driest, with about 3.3 in (83 mm). The yearly total is around 51.5 in (1308 mm).
January is the coldest, with average lows of 29°F (-1°C) and highs of 47°F (8°C). The warmest is August, with average highs of 89°F (32°C).
Not very: summer (June – August) humidity averages 72%, and highs peak around 89°F (32°C), so heat matters more than mugginess.
On average, yes: lows fall below 32°F (0°C) in January, bottoming out around 29°F (-1°C) in January.
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