Plano, Texas Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Plano weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 2:39 AM CDT · Open-Meteo
- TodaySep 21Clear later13%—97°75°—
- TuesdaySep 22Overcast——92°73°-5°
- WednesdaySep 23Overcast——96°74°+4°
- ThursdaySep 24Overcast——95°70°-1°
- FridaySep 25Overcast——94°70°-1°
- SaturdaySep 26Overcast——98°74°+4°
- SundaySep 27Light Drizzle10%—98°81°0°
Air quality now AQI 52 · Moderate
AQI 52 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.0 µg/m³ (AQI 60) with a 0.83 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 14.0 µg/m³ (AQI 60) with a 0.83 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.83
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:42 PM
- Moonset
- 2:10 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Plano at a glance
- Today vs. normal: Today averages 86°F (high 97°F, low 75°F), 11°F above the 75°F normal for Sep 21
- Last frost: March 7 (1991–2020 median, NOAA station 6 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant beans, squash, fall brassicas, carrots; harvest beans, summer squash, winter squash
15-Day Forecast — Plano
- Mon96°76°13%
- Tue92°73°9%
- Wed96°74°4%
- Thu95°70°2%
- Fri94°70°2%
- Sat98°74°4%
- Sun98°81°10%
- Mon95°69°19%
- Tue94°71°31%
- Wed95°70°14%
- Thu93°70°8%
- Fri94°73°10%
- Sat95°76°14%
- Sun96°79°22%
- Mon97°78°26%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Plano
Interactive wind and temperature map centered on Plano — it loads in your browser. Open the full weather map.
Right now in the garden
Late season
As of September 21, the first frost (around November 21) is about 9 weeks away. Frost-tender plants keep producing until then. This city's planting calendar for September: plant beans, squash, fall brassicas, and carrots; harvest beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Plano
SPC includes Plano in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Plano
Plano sits in Collin County, where the year’s longest day runs 14h 20m of daylight and its shortest just 9h 58m — a swing of +4h 22m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Houston, the state’s largest city, lies about 239 miles to the SSE. The nearest town Plano tracks is Frisco, roughly 8 miles to the NNW.
Air quality in Plano
Air quality in Plano’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 37). See the full air-quality history for Plano.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| February | lettuce, peas, spinach, radishes | — |
| March | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, spinach, radishes |
| April | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| May | squash | lettuce, peas, spinach, beans, summer squash, garlic |
| June | squash | tomatoes, peppers, beans, summer squash, garlic |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, summer squash, winter squash |
| August | tomatoes, peppers, beans, squash | summer squash, winter squash |
| September | beans, squash, fall brassicas, carrots | beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| December | — | fall brassicas, carrots |
A year in weather
Plano's warmest month is July (~85°F mean) and its coldest is January (~46°F). Rainfall peaks in October (5.3 inches) and bottoms out in July (2.2 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 46° | 2.8″ | 5 |
| February | 50° | 3.4″ | 5 |
| March | 58° | 3.6″ | 6 |
| April | 65° | 3.5″ | 5 |
| May | 73° | 5.2″ | 7 |
| June | 81° | 3.8″ | 5 |
| July | 85° | 2.2″ | 4 |
| August | 85° | 2.5″ | 4 |
| September | 77° | 3.3″ | 4 |
| October | 67° | 5.3″ | 6 |
| November | 56° | 3.0″ | 4 |
| December | 48° | 3.4″ | 4 |
Regional context
Similar climates Richardson, TX, Allen, TX, Parker, TX
In Plano, NOAA NCEI 1991-2020 normals put January near 46°F and July near 85°F — a 39°F seasonal arc — with about 41.9 inches of precipitation over 57 rainy or snowy days.
No season owns Plano's rain: October reaches 5.3 inches across 5.6 days and July keeps 2.2 inches on 3.5, an even spread through Plano's year. It is a balanced pattern Plano shares with places like Richardson, TX, Allen, TX and Parker, TX.
Plano reaches its last hard frost near March 7; that is the cue for lettuce, chard, arugula, and mustard greens. Plano's heat-lovers — tomatoes, peppers, squash — hold off until Plano's frost risk clears, 10-14 days on. By November 21, frost is back in Plano — protect or harvest anything tender. Open lawns in Plano whiten first when frost returns.
Similar climates: Richardson, TX, Allen, TX, Parker, TX, Hebron, TX, Addison, TX.
Frequently asked
- When does it freeze in Plano?
- In Plano, expect the last spring frost near March 7; Plano's first autumn frost comes around November 21.
- What is the rainy season in Plano?
- Plano sees its heaviest rain in October (around 5.3 inches), part of roughly 42 inches a year.
- What is the warmest month in Plano?
- July is Plano's warmest month, averaging about 85°F.
- What is the coldest month in Plano?
- Plano bottoms out in January, with a mean near 46°F.
- When can I start a vegetable garden in Plano?
- Plano's last frost (March 7) cues hardy greens; in Plano, hold heat-lovers two weeks past.
- How many rainy days does Plano get?
- Plano averages about 57 days with measurable rain or snow each year.
- What hardiness zone is Plano?
- Plano's hardiness zone tracks its winter low; with January near 46°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for Plano?
- Plano's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Plano?
- See this week's day-by-day rain chances for Plano in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Plano?
- Current conditions for Plano and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Plano forecast updated?
- The Plano forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Plano?
- Today's sunrise and sunset times for Plano are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Plano?
- The next few days in Plano's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Plano sits at 33.1°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Plano
- 75023
- 75024
- 75025
- 75026
- 75074
- 75075
- 75086
- 75093
- 75094