Climate
Plano weather by month
Average highs, lows, rain and snow for every month, from 30 years of weather records.
Average temperatures
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Best time to visit: March, April, November, when highs are mild and rain is lightest.
Month by month
| Month | High | Low | Rain | Wet days |
|---|---|---|---|---|
| January | 56°F | 36°F | 2.8 in | 8 |
| February | 60°F | 40°F | 3.4 in | 8 |
| March | 69°F | 48°F | 3.6 in | 9 |
| April | 75°F | 55°F | 3.5 in | 8 |
| May | 83°F | 64°F | 5.2 in | 10 |
| June | 90°F | 71°F | 3.8 in | 7 |
| July | 94°F | 75°F | 2.2 in | 5 |
| August | 95°F | 75°F | 2.5 in | 5 |
| September | 87°F | 67°F | 3.3 in | 6 |
| October | 78°F | 56°F | 5.3 in | 8 |
| November | 66°F | 46°F | 3.0 in | 7 |
| December | 57°F | 38°F | 3.4 in | 8 |
NOAA U.S. Climate Normals 1991–2020, Richardson, Tx Us (4.5 mi away, 678 ft). Wet days: days with at least 0.01 in of precipitation.
Questions
What is the hottest month in Plano?
August, with an average high of 95°F and low of 75°F.
What is the coldest month in Plano?
January, with an average low of 36°F and high of 56°F.
When does it rain most in Plano?
October is the wettest month, averaging 5.3 in of precipitation; the year totals about 42.0 inches.
What is the best time to visit Plano?
For mild weather (highs between 65°F and 85°F) with the least rain, March, April, November.
Where do these numbers come from?
NOAA’s 1991–2020 U.S. Climate Normals for the Richardson weather station, 4.5 miles from downtown: 30-year averages, not a forecast.