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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 97°F, while the coldest is January averaging around 36°F at night. Around 35 inches of precipitation falls each year, peaking in May (4.7 inches) and easing off in August (1.6 inches).

☀️ Summers

Very hot

Highs near 97°F in August.

About 92 days a year above 90 °F

❄️ Winters

Chilly

Lows near 36°F in January.

About 25 freezing nights a year

🌧️ Rain

Moderate rainfall

About 35 in of rain a year.

Wettest in May

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.7 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Harker Heights climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	60	63	70	77	84	92	96	97	90	80	69	60
Avg temp (°F)	48	52	59	65	73	81	84	85	78	68	58	49
Avg low (°F)	36	40	47	54	63	70	72	73	67	56	46	38
Precipitation (in)	2.5	2.2	3.3	2.2	4.7	3.2	2.7	1.6	3.9	3.4	2.7	2.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	60	63	70	77	84	92
Avg temp (°F)	48	52	59	65	73	81
Avg low (°F)	36	40	47	54	63	70
Precipitation (in)	2.5	2.2	3.3	2.2	4.7	3.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	96	97	90	80	69	60
Avg temp (°F)	84	85	78	68	58	49
Avg low (°F)	72	73	67	56	46	38
Precipitation (in)	2.7	1.6	3.9	3.4	2.7	2.4

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 ≥ 90°F (days)	—	0.1	0.2	1	7	18	25	23	13	3	0.1	—
Days with low ≤ 32°F (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 ≥ 90°F (days)	—	0.1	0.2	1	7	18
Days with low ≤ 32°F (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 ≥ 90°F (days)	25	23	13	3	0.1	—
Days with low ≤ 32°F (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 (mph)	6.8	7.1	7.4	7.4	6.9	6.4	6.3	5.7	5.4	6.1	6.5	6.5

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 (mph)	6.8	7.1	7.4	7.4	6.9	6.4

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 (mph)	6.3	5.7	5.4	6.1	6.5	6.5

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.

How we build these numbers →