Weatheo
  • Plano ›
  • Weather by month

Plano Weather by Month

Average temperatures, rainfall and humidity for Plano, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Plano month looks like before you travel — then check the live Plano forecast for the days ahead.

Warmest month

August

36°C average high

Coolest month

January

3°C average low

Wettest month

May

144 mm of rain

Driest month

July

49 mm of rain

Average temperature and rainfall in Plano by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January14°C3°C-13°C / 27°C
50 mm
64%13 km/h
February17°C6°C-17°C / 33°C
52 mm
66%15 km/h
March22°C10°C-12°C / 34°C
73 mm
62%16 km/h
April25°C14°C2°C / 35°C
100 mm
65%17 km/h
May29°C18°C4°C / 36°C
144 mm
69%16 km/h
June33°C23°C15°C / 39°C
77 mm
66%14 km/h
July35°C25°C18°C / 42°C
49 mm
61%13 km/h
August36°C25°C18°C / 43°C
54 mm
59%12 km/h
September32°C21°C12°C / 42°C
71 mm
63%11 km/h
October27°C15°C-1°C / 36°C
110 mm
63%13 km/h
November20°C9°C-6°C / 33°C
63 mm
67%13 km/h
December16°C6°C-12°C / 29°C
102 mm
68%13 km/h

Best time to visit Plano

The most comfortable time to visit Plano is generally March to April and November, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 947 mm a year.

Travellers who prefer heat should aim for August, when highs average 36°C. May is the month to avoid if rain would spoil your plans — it averages 144 mm, roughly 3× the rainfall of the driest month (July).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Plano forecast for what is happening now.

Weather across United States right now