Home › Cities › United States › Texas › Duncanville
Duncanville, Texas climate
Cfa Humid subtropical
Duncanville has a seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 36°C, while the coldest is January averaging around 3°C at night. Around 957 mm of precipitation falls each year, peaking in October (115 mm) and easing off in August (46 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 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 countsDuncanville climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 16 | 21 | 25 | 29 | 33 | 36 | 36 | 32 | 26 | 20 | 15 |
| Avg temp (°C) | 9 | 11 | 15 | 19 | 23 | 28 | 30 | 30 | 26 | 20 | 14 | 10 |
| Avg low (°C) | 3 | 5 | 9 | 13 | 18 | 22 | 24 | 24 | 20 | 14 | 8 | 4 |
| Precipitation (mm) | 65 | 65 | 91 | 94 | 110 | 98 | 49 | 46 | 75 | 115 | 71 | 78 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 16 | 21 | 25 | 29 | 33 |
| Avg temp (°C) | 9 | 11 | 15 | 19 | 23 | 28 |
| Avg low (°C) | 3 | 5 | 9 | 13 | 18 | 22 |
| Precipitation (mm) | 65 | 65 | 91 | 94 | 110 | 98 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 36 | 36 | 32 | 26 | 20 | 15 |
| Avg temp (°C) | 30 | 30 | 26 | 20 | 14 | 10 |
| Avg low (°C) | 24 | 24 | 20 | 14 | 8 | 4 |
| Precipitation (mm) | 49 | 46 | 75 | 115 | 71 | 78 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 7 | 9 | 8 | 10 | 8 | 5 | 6 | 6 | 7 | 7 | 7 |
| Days with high ≥ 32°C (days) | 0.0 | — | — | 0.3 | 6 | 21 | 28 | 28 | 17 | 3 | 0.1 | — |
| Days with low ≤ 0°C (days) | 10 | 6 | 2 | 0.0 | — | — | — | 0.0 | — | 0.1 | 2 | 8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 7 | 9 | 8 | 10 | 8 |
| Days with high ≥ 32°C (days) | 0.0 | — | — | 0.3 | 6 | 21 |
| Days with low ≤ 0°C (days) | 10 | 6 | 2 | 0.0 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 5 | 6 | 6 | 7 | 7 | 7 |
| Days with high ≥ 32°C (days) | 28 | 28 | 17 | 3 | 0.1 | — |
| Days with low ≤ 0°C (days) | — | 0.0 | — | 0.1 | 2 | 8 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 59 | 58 | 54 | 57 | 47 | 41 | 41 | 41 | 43 | 50 | 56 |
| Clear days (≤ 30% cloud) | 10 | 7 | 8 | 9 | 8 | 10 | 13 | 14 | 13 | 14 | 10 | 9 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 10 | 10 | 12 | 12 | 11 | 10 | 9 | 10 | 9 |
| Cloudy days (≥ 70%) | 13 | 13 | 14 | 12 | 13 | 8 | 6 | 6 | 7 | 9 | 10 | 13 |
| Relative humidity (%) | 75 | 75 | 74 | 72 | 73 | 69 | 60 | 57 | 62 | 66 | 72 | 75 |
| Wind speed (mph) | 7.0 | 7.4 | 7.6 | 7.6 | 6.9 | 6.2 | 6.0 | 5.5 | 5.5 | 6.3 | 6.8 | 6.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 59 | 58 | 54 | 57 | 47 |
| Clear days (≤ 30% cloud) | 10 | 7 | 8 | 9 | 8 | 10 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 10 | 10 | 12 |
| Cloudy days (≥ 70%) | 13 | 13 | 14 | 12 | 13 | 8 |
| Relative humidity (%) | 75 | 75 | 74 | 72 | 73 | 69 |
| Wind speed (mph) | 7.0 | 7.4 | 7.6 | 7.6 | 6.9 | 6.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 41 | 41 | 43 | 50 | 56 |
| Clear days (≤ 30% cloud) | 13 | 14 | 13 | 14 | 10 | 9 |
| Partly cloudy days (30–70%) | 12 | 11 | 10 | 9 | 10 | 9 |
| Cloudy days (≥ 70%) | 6 | 6 | 7 | 9 | 10 | 13 |
| Relative humidity (%) | 60 | 57 | 62 | 66 | 72 | 75 |
| Wind speed (mph) | 6.0 | 5.5 | 5.5 | 6.3 | 6.8 | 6.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Dallas Redbird AP (NOAA GHCN station USW00003971), about 5 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.