Home › Cities › United States › Texas › Lancaster

Lancaster, Texas climate

Cfa Humid subtropical

Lancaster has a seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 96°F, while the coldest is January averaging around 38°F at night. Around 38 inches of precipitation falls each year, peaking in October (4.5 inches) and easing off in August (1.8 inches).

☀️ Summers

Very hot

Highs near 96°F in August.

About 103 days a year above 90 °F

❄️ Winters

Chilly

Lows near 38°F in January.

About 27 freezing nights a year

🌧️ Rain

Moderate rainfall

About 38 in of rain a year.

Wettest in October

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

−0.4 °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

Lancaster climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	57	62	69	76	84	91	96	96	89	79	67	59
Avg temp (°F)	48	51	59	66	74	82	86	86	79	68	57	49
Avg low (°F)	38	41	48	55	64	72	75	75	68	58	47	39
Precipitation (in)	2.6	2.6	3.6	3.7	4.3	3.9	1.9	1.8	3.0	4.5	2.8	3.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	57	62	69	76	84	91
Avg temp (°F)	48	51	59	66	74	82
Avg low (°F)	38	41	48	55	64	72
Precipitation (in)	2.6	2.6	3.6	3.7	4.3	3.9

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	96	96	89	79	67	59
Avg temp (°F)	86	86	79	68	57	49
Avg low (°F)	75	75	68	58	47	39
Precipitation (in)	1.9	1.8	3.0	4.5	2.8	3.1

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 ≥ 90°F (days)	0.0	—	—	0.3	6	21	28	28	17	3	0.1	—
Days with low ≤ 32°F (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 ≥ 90°F (days)	0.0	—	—	0.3	6	21
Days with low ≤ 32°F (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 ≥ 90°F (days)	28	28	17	3	0.1	—
Days with low ≤ 32°F (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 14 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 →