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Bristol, Tennessee climate
Cfa Humid subtropical
Bristol has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 30°C, while the coldest is January averaging around −3°C at night. Precipitation is fairly even year-round, totalling about 1117 mm. Light snow accumulates each winter (23 cm of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsBristol climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 11 | 15 | 21 | 25 | 29 | 30 | 30 | 27 | 21 | 15 | 10 |
| Avg temp (°C) | 2 | 4 | 9 | 14 | 18 | 22 | 24 | 24 | 20 | 14 | 8 | 4 |
| Avg low (°C) | −3 | −2 | 2 | 6 | 11 | 16 | 18 | 17 | 14 | 7 | 1 | −2 |
| Precipitation (mm) | 93 | 97 | 101 | 96 | 97 | 100 | 127 | 96 | 72 | 64 | 80 | 96 |
| Snowfall (cm) | 8 | 8 | 3 | 0 | — | — | — | — | — | — | 1 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 11 | 15 | 21 | 25 | 29 |
| Avg temp (°C) | 2 | 4 | 9 | 14 | 18 | 22 |
| Avg low (°C) | −3 | −2 | 2 | 6 | 11 | 16 |
| Precipitation (mm) | 93 | 97 | 101 | 96 | 97 | 100 |
| Snowfall (cm) | 8 | 8 | 3 | 0 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 27 | 21 | 15 | 10 |
| Avg temp (°C) | 24 | 24 | 20 | 14 | 8 | 4 |
| Avg low (°C) | 18 | 17 | 14 | 7 | 1 | −2 |
| Precipitation (mm) | 127 | 96 | 72 | 64 | 80 | 96 |
| Snowfall (cm) | — | — | — | — | 1 | 4 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 13 | 14 | 12 | 13 | 12 | 13 | 11 | 8 | 9 | 10 | 12 |
| Days with high ≥ 32°C (days) | — | — | — | 0.0 | 0.4 | 4 | 8 | 7 | 3 | 0.1 | — | — |
| Days with low ≤ 0°C (days) | 22 | 18 | 12 | 4 | 0.2 | — | — | — | — | 3 | 15 | 20 |
| Days with snowfall ≥ 2.5 cm (days) | 1 | 0.9 | 0.2 | 0.0 | — | — | — | — | — | 0.0 | 0.1 | 0.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 13 | 14 | 12 | 13 | 12 |
| Days with high ≥ 32°C (days) | — | — | — | 0.0 | 0.4 | 4 |
| Days with low ≤ 0°C (days) | 22 | 18 | 12 | 4 | 0.2 | — |
| Days with snowfall ≥ 2.5 cm (days) | 1 | 0.9 | 0.2 | 0.0 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 11 | 8 | 9 | 10 | 12 |
| Days with high ≥ 32°C (days) | 8 | 7 | 3 | 0.1 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 3 | 15 | 20 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.0 | 0.1 | 0.5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 70 | 67 | 63 | 64 | 62 | 63 | 58 | 53 | 52 | 59 | 69 |
| Clear days (≤ 30% cloud) | 4 | 4 | 5 | 6 | 5 | 5 | 5 | 7 | 9 | 10 | 8 | 4 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 9 | 10 | 12 | 12 | 12 | 10 | 10 | 9 | 9 |
| Cloudy days (≥ 70%) | 18 | 17 | 17 | 15 | 16 | 13 | 14 | 12 | 11 | 11 | 13 | 18 |
| Relative humidity (%) | 83 | 82 | 80 | 78 | 78 | 76 | 73 | 70 | 68 | 70 | 75 | 82 |
| Wind speed (km/h) | 5.0 | 5.3 | 5.1 | 4.6 | 3.7 | 3.2 | 3.0 | 2.9 | 3.2 | 3.7 | 4.0 | 4.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 70 | 67 | 63 | 64 | 62 |
| Clear days (≤ 30% cloud) | 4 | 4 | 5 | 6 | 5 | 5 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 9 | 10 | 12 |
| Cloudy days (≥ 70%) | 18 | 17 | 17 | 15 | 16 | 13 |
| Relative humidity (%) | 83 | 82 | 80 | 78 | 78 | 76 |
| Wind speed (km/h) | 5.0 | 5.3 | 5.1 | 4.6 | 3.7 | 3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 58 | 53 | 52 | 59 | 69 |
| Clear days (≤ 30% cloud) | 5 | 7 | 9 | 10 | 8 | 4 |
| Partly cloudy days (30–70%) | 12 | 12 | 10 | 10 | 9 | 9 |
| Cloudy days (≥ 70%) | 14 | 12 | 11 | 11 | 13 | 18 |
| Relative humidity (%) | 73 | 70 | 68 | 70 | 75 | 82 |
| Wind speed (km/h) | 3.0 | 2.9 | 3.2 | 3.7 | 4.0 | 4.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Bristol AP (NOAA GHCN station USW00013877), about 23 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.