Mcallen weather in August 2025

The temperatures in Mcallen during August are extremely high, between 27°C and hot as 37°C, drinking water regularly is advisable.

You can expect about 3 to 8 days of rain in Mcallen during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Mcallen in August 2025.

If you’re planning to visit Mcallen in the near future, we highly recommend that you review the 14 day weather forecast for Mcallen before you arrive.

Temperatures

37° / 27°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

11.8

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
					1 37° /26°	2 38° /27°
3 38° /26°	4 38° /26°	5 38° /26°	6 37° /27°	7 38° /26°	8 38° /27°	9 37° /27°
10 38° /27°	11 38° /27°	12 37° /27°	13 37° /27°	14 36° /26°	15 36° /26°	16 39° /26°
17 38° /27°	18 38° /27°	19 38° /27°	20 38° /26°	21 37° /26°	22 37° /26°	23 37° /26°
24 36° /26°	25 36° /27°	26 37° /27°	27 38° /27°	28 38° /27°	29 36° /27°	30 37° /26°
31 38° /26°

Explore the weather in Mcallen in other months

Mcallen annual weather

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	21° / 13°	3	28	46 mm	Good	Mcallen in January
February	24° / 15°	2	26	29 mm	Perfect	Mcallen in February
March	28° / 18°	2	29	34 mm	Perfect	Mcallen in March
April	31° / 20°	3	27	41 mm	Good	Mcallen in April
May	33° / 23°	4	27	74 mm	Good	Mcallen in May
June	35° / 25°	5	25	90 mm	Ok	Mcallen in June
July	36° / 26°	3	28	80 mm	Ok	Mcallen in July
August	37° / 27°	3	28	47 mm	Ok	Mcallen in August
September	34° / 26°	7	23	137 mm	Bad	Mcallen in September
October	31° / 22°	3	28	48 mm	Good	Mcallen in October
November	26° / 18°	3	27	51 mm	Perfect	Mcallen in November
December	23° / 15°	3	28	52 mm	Perfect	Mcallen in December