Ammie Wilson House · Photo: Susan Bartley · CC BY-SA 3.0Plano reaches 100° on about 15 days a year, more than 93% of U.S. towns
A typical July afternoon reaches 95°, a January night drops to 35°, and about 3 inches of snow falls in a normal winter.
A year in Plano at a glance
Each month’s typical high and low, and what it brings.
What stands out about Plano’s climate
Compared with towns across the U.S., with Plano’s place in Texas beside it.
What a year in Plano feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 259 frost-free days a year
In half of years the last 32° night comes by March 7 and the first by November 21. Frost and day counts come from NOAA’s station at Richardson, TX, 4 miles from the city’s center point, at about the same height.
The 2023 USDA map puts Plano’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 17°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 3 inches of snow a winter
Snow, measured at Frisco, TX, falls mostly in February. Precipitation (rain plus melted snow) adds up to 41 inches a year; October is the wettest month and July the driest. Rain or snow falls on about 84 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Plano
47% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Richardson, TX.
Living with Plano’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
259 frost-free days in zone 8b. The last frost comes by Mar 7 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 21.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 49 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Plano from natural hazards, tornadoes are the largest share (57%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Plano and its neighbors
Carrollton the hottest July afternoons (96°, 1° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Plano’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Plano, TX | 35° | 95° | 41" | 2.6" |
| Clearlake, CA | 35° | 93° | 40" | 0.4" |
| Cayce, SC | 35° | 93° | 46" | 1.2" |
| Evans, GA | 35° | 92° | 45" | 0.8" |
| Tecumseh, OK | 28° | 93° | 40" | 1.4" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Plano averaged 0.9° warmer than the 1900s. The biggest change is in January (+1.9°).
A smaller shift than in 86% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods. In a city of 293,000 people, part of the change is the city itself: pavement and buildings hold heat (the urban heat island).
How Plano compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Plano’s place among Texas’.
Plano weather by month
Highs, lows and precipitation from NOAA’s grid at Plano’s center; snow, wet days and snow on the ground from Frisco, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 55° | 35° | 2.6" | 0.2" | 7 | 0 | 41° – 53° |
| February | 59° | 39° | 3.0" | 1.3" | 8 | 1 | 41° – 58° |
| March | 67° | 47° | 3.8" | 0.4" | 8 | 0 | 51° – 64° |
| April | 75° | 54° | 3.6" | 0.0" | 7 | 0 | 59° – 70° |
| May | 82° | 63° | 4.9" | 0.0" | 9 | 0 | 69° – 78° |
| June | 90° | 71° | 3.8" | 0.0" | 8 | 0 | 77° – 85° |
| July | 95° | 74° | 2.2" | 0.0" | 5 | 0 | 80° – 90° |
| August | 95° | 74° | 2.4" | 0.0" | 6 | 0 | 78° – 92° |
| September | 88° | 67° | 3.1" | 0.0" | 6 | 0 | 73° – 84° |
| October | 77° | 56° | 4.9" | 0.0" | 7 | 0 | 61° – 72° |
| November | 66° | 45° | 3.1" | 0.1" | 6 | 0 | 49° – 61° |
| December | 57° | 37° | 3.3" | 0.6" | 7 | 1 | 39° – 51° |
| Year | 75° | 55° | 40.7" | 2.6" | 84 | 2 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 41° to 58°. June is the most reliable, staying within 8°.
Where Plano’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Plano’s center.
- Snow: Frisco, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Richardson, TX, 4 miles from the city’s center point, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Plano’s climate
What is the weather like in Plano?
A typical July afternoon reaches 95°, a January night drops to 35°, and about 3 inches of snow falls in a normal winter. Milder January nights than 81% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Plano in winter?
January nights average 35°. About 35 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 41°.
How much snow does Plano get?
About 2.6 inches in a normal winter at Frisco, TX, most of it in February, with snow on the ground about 2 days a year.
How hot does it get in Plano?
July, with a typical high of 95° and a low of 74°. About 93 days a year reach 90° and 15 reach 100° (Richardson, TX).
When is the first and last frost in Plano?
In half of years the last spring frost (32°) comes by March 7 and the first fall frost by November 21, about 259 frost-free days, at Richardson, TX.
What growing zone is Plano in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 17°.
What is the best time of year to visit Plano?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Plano getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 86% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Plano.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.