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Harker Heights, Texas climate
Cfa Humid subtropical
Harker Heights 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 2°C at night. Around 883 mm of precipitation falls each year, peaking in May (119 mm) and easing off in August (42 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 countsHarker Heights climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 17 | 21 | 25 | 29 | 33 | 35 | 36 | 32 | 27 | 21 | 16 |
| Avg temp (°C) | 9 | 11 | 15 | 19 | 23 | 27 | 29 | 29 | 26 | 20 | 14 | 10 |
| Avg low (°C) | 2 | 4 | 8 | 12 | 17 | 21 | 22 | 23 | 19 | 14 | 8 | 3 |
| Precipitation (mm) | 62 | 55 | 83 | 55 | 119 | 82 | 70 | 42 | 99 | 87 | 69 | 61 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 17 | 21 | 25 | 29 | 33 |
| Avg temp (°C) | 9 | 11 | 15 | 19 | 23 | 27 |
| Avg low (°C) | 2 | 4 | 8 | 12 | 17 | 21 |
| Precipitation (mm) | 62 | 55 | 83 | 55 | 119 | 82 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 35 | 36 | 32 | 27 | 21 | 16 |
| Avg temp (°C) | 29 | 29 | 26 | 20 | 14 | 10 |
| Avg low (°C) | 22 | 23 | 19 | 14 | 8 | 3 |
| Precipitation (mm) | 70 | 42 | 99 | 87 | 69 | 61 |
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 | 7 | 5 | 7 | 6 | 4 | 3 | 5 | 5 | 6 | 6 |
| Days with high ≥ 32°C (days) | — | 0.1 | 0.2 | 1 | 7 | 18 | 25 | 23 | 13 | 3 | 0.1 | — |
| Days with low ≤ 0°C (days) | 8 | 4 | 2 | — | 0.1 | — | — | — | 0.0 | 0.2 | 3 | 7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 7 | 7 | 5 | 7 | 6 |
| Days with high ≥ 32°C (days) | — | 0.1 | 0.2 | 1 | 7 | 18 |
| Days with low ≤ 0°C (days) | 8 | 4 | 2 | — | 0.1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 3 | 5 | 5 | 6 | 6 |
| Days with high ≥ 32°C (days) | 25 | 23 | 13 | 3 | 0.1 | — |
| Days with low ≤ 0°C (days) | — | — | 0.0 | 0.2 | 3 | 7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 59 | 59 | 55 | 58 | 46 | 40 | 41 | 43 | 43 | 50 | 55 |
| Clear days (≤ 30% cloud) | 9 | 8 | 8 | 9 | 7 | 11 | 14 | 14 | 12 | 14 | 10 | 9 |
| Partly cloudy days (30–70%) | 9 | 7 | 9 | 9 | 10 | 11 | 11 | 11 | 10 | 8 | 9 | 9 |
| Cloudy days (≥ 70%) | 13 | 14 | 14 | 12 | 14 | 8 | 6 | 7 | 8 | 9 | 10 | 13 |
| Relative humidity (%) | 72 | 72 | 71 | 69 | 71 | 68 | 61 | 59 | 65 | 67 | 71 | 72 |
| Wind speed (km/h) | 10.9 | 11.4 | 11.8 | 12.0 | 11.1 | 10.2 | 10.1 | 9.1 | 8.7 | 9.8 | 10.5 | 10.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 59 | 59 | 55 | 58 | 46 |
| Clear days (≤ 30% cloud) | 9 | 8 | 8 | 9 | 7 | 11 |
| Partly cloudy days (30–70%) | 9 | 7 | 9 | 9 | 10 | 11 |
| Cloudy days (≥ 70%) | 13 | 14 | 14 | 12 | 14 | 8 |
| Relative humidity (%) | 72 | 72 | 71 | 69 | 71 | 68 |
| Wind speed (km/h) | 10.9 | 11.4 | 11.8 | 12.0 | 11.1 | 10.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 40 | 41 | 43 | 43 | 50 | 55 |
| Clear days (≤ 30% cloud) | 14 | 14 | 12 | 14 | 10 | 9 |
| Partly cloudy days (30–70%) | 11 | 11 | 10 | 8 | 9 | 9 |
| Cloudy days (≥ 70%) | 6 | 7 | 8 | 9 | 10 | 13 |
| Relative humidity (%) | 61 | 59 | 65 | 67 | 71 | 72 |
| Wind speed (km/h) | 10.1 | 9.1 | 8.7 | 9.8 | 10.5 | 10.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Killeen (NOAA GHCN station USC00414792), about 4 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.