Reynosa, Tamaulipas climate

BSh Hot semi-arid

Reynosa has a seasonal tropical climate (Hot semi-arid, Köppen BSh). The hottest month is August with an average daily high near 38°C, while the coldest is January averaging around 12°C at night. Precipitation totals about 563 mm a year and is strongly seasonal — September alone averages 117 mm while February barely receives 18 mm.

☀️ Summers

Very hot

Highs near 38°C in August.

About 176 days a year above 32 °C

❄️ Winters

Mild

Lows near 12°C in January.

🌧️ Rain

Moderate rainfall

About 563 mm of rain a year.

Wettest in September

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+1.4 °C 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

Reynosa climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	23	25	28	31	34	36	37	38	35	32	27	23
Avg temp (°C)	17	20	23	26	29	31	31	32	29	26	21	18
Avg low (°C)	12	14	17	20	23	26	26	26	24	20	16	12
Precipitation (mm)	20	18	35	36	52	77	52	46	117	53	30	27

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	23	25	28	31	34	36
Avg temp (°C)	17	20	23	26	29	31
Avg low (°C)	12	14	17	20	23	26
Precipitation (mm)	20	18	35	36	52	77

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	37	38	35	32	27	23
Avg temp (°C)	31	32	29	26	21	18
Avg low (°C)	26	26	24	20	16	12
Precipitation (mm)	52	46	117	53	30	27

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	6	4	4	4	4	5	5	4	8	5	5	6
Days with high ≥ 32°C (days)	0.4	2	6	13	24	28	30	30	24	16	3	0.5
Days with low ≤ 0°C (days)	0.3	0.3	—	—	—	—	—	—	—	—	0.1	0.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	6	4	4	4	4	5
Days with high ≥ 32°C (days)	0.4	2	6	13	24	28
Days with low ≤ 0°C (days)	0.3	0.3	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	5	4	8	5	5	6
Days with high ≥ 32°C (days)	30	30	24	16	3	0.5
Days with low ≤ 0°C (days)	—	—	—	—	0.1	0.2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	59	59	60	58	52	42	38	38	46	41	50	59
Clear days (≤ 30% cloud)	8	7	7	7	8	13	15	15	12	14	10	7
Partly cloudy days (30–70%)	9	8	10	11	12	11	10	11	10	10	10	10
Cloudy days (≥ 70%)	14	13	14	12	11	6	6	5	8	7	10	14
Relative humidity (%)	71	69	66	65	66	66	67	66	72	71	71	71
Wind speed (km/h)	11.8	13.0	14.0	14.4	14.5	13.6	14.1	12.1	9.7	10.7	11.1	11.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	59	59	60	58	52	42
Clear days (≤ 30% cloud)	8	7	7	7	8	13
Partly cloudy days (30–70%)	9	8	10	11	12	11
Cloudy days (≥ 70%)	14	13	14	12	11	6
Relative humidity (%)	71	69	66	65	66	66
Wind speed (km/h)	11.8	13.0	14.0	14.4	14.5	13.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	38	38	46	41	50	59
Clear days (≤ 30% cloud)	15	15	12	14	10	7
Partly cloudy days (30–70%)	10	11	10	10	10	10
Cloudy days (≥ 70%)	6	5	8	7	10	14
Relative humidity (%)	67	66	72	71	71	71
Wind speed (km/h)	14.1	12.1	9.7	10.7	11.1	11.2

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Mcallen Miller Intl AP (NOAA GHCN station USW00012959), about 12 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 →