Plano, TX

Climate overview — based on NOAA 1991-2020 normals from RICHARDSON, TX US.

Cfa Humid subtropical climate 9a USDA hardiness Zone 9a

Year-round temperatures (°F)

30° 50° 70° 90° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Plano has an annual average temperature of 65.8°F with about 41.9 inches of precipitation per year. The warmest month is August (average high 94.8°F), and the coldest is January (average low 35.8°F). October is typically the wettest month (5.26 in) and July the driest (2.22 in).

Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
39°F
warmest to coldest month
Heating need
2,034
Cooling need
2,319

Best time to visit Plano

Full guide →

Climate change signal

All-time records →

185 of 366 (50.5%) of Plano's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1940s
0
1950s
0
1960s
0
1970s
13
1980s
35
1990s
0
2000s
38
2010s
141
2020s
139

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month Avg High Avg Low Avg Temp Precipitation Snow Rainy days
January 55.9°F 35.8°F 45.8°F 2.78 in 8
February 60.0°F 39.5°F 49.8°F 3.37 in 8
March 68.6°F 47.5°F 58.1°F 3.56 in 9
April 75.4°F 54.8°F 65.1°F 3.52 in 8
May 82.6°F 63.6°F 73.1°F 5.18 in 10
June 90.0°F 71.2°F 80.6°F 3.83 in 7
July 94.3°F 75.3°F 84.8°F 2.22 in 5
August 94.8°F 74.5°F 84.7°F 2.48 in 5
September 87.3°F 67.1°F 77.2°F 3.30 in 6
October 77.5°F 56.1°F 66.8°F 5.26 in 8
November 66.1°F 45.6°F 55.9°F 3.04 in 7
December 57.3°F 38.0°F 47.6°F 3.37 in 8

Climate twins of Plano

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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