Plano climate
Plano (Texas, United States) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 18 °C65 °F, and about 922 mm36 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Plano climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1254 | 033 | 643 | 582.3 | 14 |
| Feb | 1458 | 236 | 847 | 672.6 | 9 |
| Mar | 2067 | 745 | 1456 | 883.5 | 2 |
| Apr | 2476 | 1253 | 1865 | 833.2 | 0 |
| May | 2883 | 1763 | 2373 | 1164.6 | 0 |
| Jun | 3391 | 2271 | 2781 | 963.8 | 0 |
| Jul | 3696 | 2475 | 3085 | 552.2 | 0 |
| Aug | 3697 | 2475 | 3086 | 622.5 | 0 |
| Sep | 3289 | 2067 | 2678 | 773.0 | 0 |
| Oct | 2678 | 1355 | 1966 | 1024.0 | 0 |
| Nov | 1966 | 744 | 1355 | 572.3 | 2 |
| Dec | 1356 | 235 | 745 | 612.4 | 10 |
| Year | 3697 | 033 | 1865 | 92236 | 37 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 73% | 49% | 2.8 | 10:12 |
| Feb | 74% | 57% | 3.3 | 10:58 |
| Mar | 73% | 56% | 4.4 | 11:53 |
| Apr | 72% | 54% | 5.3 | 12:58 |
| May | 72% | 57% | 5.8 | 13:51 |
| Jun | 67% | 46% | 6.6 | 14:19 |
| Jul | 61% | 41% | 6.7 | 14:08 |
| Aug | 58% | 41% | 6.1 | 13:22 |
| Sep | 63% | 38% | 5.1 | 12:19 |
| Oct | 66% | 41% | 4.0 | 11:18 |
| Nov | 71% | 44% | 3.0 | 10:24 |
| Dec | 73% | 51% | 2.5 | 9:59 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Plano is like
The warmest month is August, with an average high of 36 °C97 °F and a low of 24 °C75 °F. The coldest is January, when highs average 12 °C54 °F and lows 0 °C33 °F. Seasons are strongly marked: the warmest month is on average 23.6 °C42.6 °F warmer than the coldest.
Annual precipitation is moderate at about 922 mm36 in. The wettest three-month stretch is April–June, which brings 32% of the annual total. The wettest month is May (116 mm4.6 in), the driest is July (55 mm2.2 in).
Relative humidity ranges from 58% in August to 74% in February. The clearest skies (lowest average cloud amount, 38%) are typical of September. Average wind speed near the ground ranges from 9 km/h (6 mph) in August to 13 km/h (8 mph) in April. Daylight lasts from about 10.0 hours in December to 14.3 hours in June.
Best time to visit Plano
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March and April and October and November: average highs of 19 °C66 °F to 26 °C78 °F with 57 mm2.3 in to 102 mm4.0 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Plano
- Winter (December–February) — highs 1254 to 14 °C58 °F, lows 033 to 2 °C36 °F, about 62 mm2.4 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2067 to 28 °C83 °F, lows 745 to 17 °C63 °F, about 96 mm3.8 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Summer (June–August) — highs 3391 to 36 °C97 °F, lows 2271 to 24 °C75 °F, about 71 mm2.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1966 to 32 °C89 °F, lows 744 to 20 °C67 °F, about 79 mm3.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Plano compares
Compared with Dallas, about 28 km to the south, Plano is on average 0.5 °C0.9 °F cooler and receives a similar amount of precipitation.
Of the 222 places in the United States covered by World Climates, Plano is the 61st warmest by annual mean temperature and the 126th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: Hongjiang (China, Cfa), Loudi (China, Cfa) and Xiulin (China, Cfa).
The same NASA POWER grid cell also contains McKinney (pop. 162,898), Frisco (pop. 154,407) and Lewisville (pop. 104,039). Their long-term averages in this dataset are essentially the same as for Plano, so they do not have separate pages.
Nearby places
- Dallas 28 km · 19 °C66 °F · 922 mm36 in
- Grand Prairie 41 km · 19 °C66 °F · 935 mm37 in
- Denton 46 km · 18 °C65 °F · 922 mm36 in
- Arlington 50 km · 19 °C66 °F · 935 mm37 in
- Fort Worth 67 km · 19 °C66 °F · 869 mm34 in
- Tyler 150 km · 18 °C65 °F · 1,179 mm46 in
- Waco 169 km · 20 °C67 °F · 946 mm37 in
- Wichita Falls 194 km · 18 °C65 °F · 769 mm30 in
Frequently asked questions
What is the warmest month in Plano?
August is the warmest month in Plano, with an average high of 36 °C (97 °F) and an average low of 24 °C (75 °F).
What is the coldest month in Plano?
January is the coldest month, with an average high of 12 °C (54 °F) and an average low of 0 °C (33 °F).
When does it rain the most in Plano?
May is the wettest month with about 116 mm (4.6 in) of precipitation; July is the driest with about 55 mm (2.2 in).
What is the best time to visit Plano?
Judging by long-term averages, the most comfortable months are March and April and October and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.