Plano, Texas, United States climate

Average temperatures, precipitation and all-time records for Plano, Texas, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is August, averaging a high of 98°F, and its coldest is January, with an average low of 33°F.

Plano is a city in the U.S. state of Texas, where it is the largest city in Collin County. A small portion of Plano is located in Denton County. Plano is one of the principal suburbs of the Dallas–Fort Worth metroplex. via Wikipedia

How today compares

Latest recorded day: 2026-07-21. Each reading placed on Plano, Texas, United States's own ±7-day seasonal distribution.

High 104°F High · 85th pct

Low 79°F High · 86th pct

Feels-like 114°F Below Normal · 26th pct

Humidity 16.2 g/m³ Below Normal · 29th pct

Wind 10 mph Below Normal · 25th pct

Precip 0.00 in Dry

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Plano average temperatures by month

Typical daily high and low, and average precipitation, for each month in Plano, Texas, United States, based on 1981–2026 records. The wettest month is January (0.10 in on an average day).

Month	Avg high	Avg low	Avg precip
January	54°F	33°F	0.10 in
February	60°F	38°F	0.10 in
March	68°F	45°F	0.10 in
April	76°F	53°F	0.10 in
May	83°F	62°F	0.10 in
June	91°F	71°F	0.10 in
July	97°F	75°F	0.10 in
August	98°F	76°F	0.10 in
September	90°F	68°F	0.10 in
October	80°F	56°F	0.10 in
November	67°F	45°F	0.10 in
December	57°F	36°F	0.10 in

Jan 22°–68°

Feb 26°–74°

Mar 34°–79°

Apr 42°–84°

May 54°–92°

Jun 66°–99°

Jul 71°–105°

Aug 70°–106°

Sep 60°–98°

Oct 47°–90°

Nov 33°–79°

Dec 25°–69°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

Hottest day on record: 114°F on 2023-08-18
Coldest day on record: 0°F on 1989-12-23

All Plano weather records →

Percentiles compare each day to Plano, Texas, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →