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Corsicana, Texas climate

Cfa Humid subtropical

Corsicana 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 35°F at night. Around 42 inches of precipitation falls each year, peaking in October (5.0 inches) and easing off in July (2.1 inches).

☀️ Summers

Very hot

Highs near 96°F in August.

About 99 days a year above 90 °F

❄️ Winters

Chilly

Lows near 35°F in January.

About 35 freezing nights a year

🌧️ Rain

Wet

About 42 in of rain a year.

Wettest in October

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.5 °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

Corsicana climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	57	61	68	76	83	90	95	96	90	79	67	59
Avg temp (°F)	46	50	57	64	73	80	84	85	78	67	56	48
Avg low (°F)	35	38	46	53	63	70	74	73	66	55	45	37
Precipitation (in)	3.1	3.3	4.0	4.0	4.3	3.8	2.1	2.5	3.3	5.0	3.2	3.6
Snowfall (in)	0.4	—	—	—	—	—	—	—	—	—	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	57	61	68	76	83	90
Avg temp (°F)	46	50	57	64	73	80
Avg low (°F)	35	38	46	53	63	70
Precipitation (in)	3.1	3.3	4.0	4.0	4.3	3.8
Snowfall (in)	0.4	—	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	95	96	90	79	67	59
Avg temp (°F)	84	85	78	67	56	48
Avg low (°F)	74	73	66	55	45	37
Precipitation (in)	2.1	2.5	3.3	5.0	3.2	3.6
Snowfall (in)	—	—	—	—	—	—

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	7	8	8	7	8	7	5	5	6	7	7	7
Days with high ≥ 90°F (days)	—	0.1	0.1	0.5	4	19	28	27	16	3	—	—
Days with low ≤ 32°F (days)	11	7	3	0.2	—	—	—	—	—	0.2	4	10
Days with snowfall ≥ 1 in (days)	0.0	—	—	—	—	—	—	—	—	—	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	7	8	8	7	8	7
Days with high ≥ 90°F (days)	—	0.1	0.1	0.5	4	19
Days with low ≤ 32°F (days)	11	7	3	0.2	—	—
Days with snowfall ≥ 1 in (days)	0.0	—	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	5	5	6	7	7	7
Days with high ≥ 90°F (days)	28	27	16	3	—	—
Days with low ≤ 32°F (days)	—	—	—	0.2	4	10
Days with snowfall ≥ 1 in (days)	—	—	—	—	—	—

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 (%)	78	78	77	76	75	70	63	59	63	68	74	77
Wind speed (mph)	6.9	7.2	7.4	7.4	6.6	6.0	5.8	5.3	5.4	6.1	6.6	6.6

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 (%)	78	78	77	76	75	70
Wind speed (mph)	6.9	7.2	7.4	7.4	6.6	6.0

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 (%)	63	59	63	68	74	77
Wind speed (mph)	5.8	5.3	5.4	6.1	6.6	6.6

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Corsicana (NOAA GHCN station USC00412019), about 3 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 →