McAllen, Texas Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
McAllen weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 1:40 AM CDT · Open-Meteo
- TodaySep 21Clear10%—99°80°—
- TuesdaySep 22Clear47%—96°78°-3°
- WednesdaySep 23Light Drizzle41%—97°81°+1°
- ThursdaySep 24Overcast47%—98°80°+1°
- FridaySep 25Mostly Clear32%—99°80°+1°
- SaturdaySep 26Overcast28%—97°80°-2°
- SundaySep 27Light Drizzle25%—95°81°-2°
Air quality now AQI 41 · Good
AQI 41 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.9 µg/m³ (AQI 33) with a 0.66 fine-to-coarse ratio and 3 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 5.9 µg/m³ (AQI 33) with a 0.66 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.66
- 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
- 4:33 PM
- Moonset
- 2:33 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
McAllen at a glance
- Today vs. normal: Today averages 90°F (high 99°F, low 80°F), 9°F above the 81°F normal for Sep 21
- Last frost: None in most years — 32°F in 48% of 1991–2020 years (NOAA station 4 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash; harvest summer squash, winter squash
15-Day Forecast — McAllen
- Mon99°80°10%
- Tue96°78°47%
- Wed97°81°41%
- Thu98°80°47%
- Fri99°80°32%
- Sat97°80°28%
- Sun95°81°25%
- Mon97°81°10%
- Tue98°81°18%
- Wed95°81°24%
- Thu90°79°15%
- Fri92°78°19%
- Sat84°80°26%
- Sun94°78°19%
- Mon93°79°27%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near McAllen
Interactive wind and temperature map centered on McAllen — it loads in your browser. Open the full weather map.
Right now in the garden
Year-round growing
As of September 21, sowing here runs through the year. Freezes are uncommon, so there is no frost date to plan around; heat and rainfall set the calendar instead. This city's planting calendar for September: plant lettuce, peas, spinach, radishes, tomatoes, peppers, beans, and squash; harvest summer squash and winter squash.
SPC Convective Outlook
Storm Prediction Center — McAllen
SPC includes McAllen in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 McAllen
McAllen sits in Hidalgo County, where the year’s longest day runs 13h 47m of daylight and its shortest just 10h 30m — a swing of +3h 17m 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 302 miles to the NE. The nearest town McAllen tracks is Brownsville, roughly 51 miles to the ESE.
Air quality in McAllen
Air quality in McAllen’s county has held roughly steady since 2020; its cleanest year on record was 2020 (median AQI 44). See the full air-quality history for McAllen.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| February | lettuce, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| March | radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| April | tomatoes, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| May | squash | tomatoes, peppers, beans, summer squash, winter squash |
| June | peppers, squash | tomatoes, peppers, summer squash, winter squash |
| July | tomatoes, peppers, squash | summer squash, winter squash |
| August | lettuce, peas, tomatoes, peppers, beans, squash | summer squash, winter squash |
| September | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | summer squash, winter squash |
| October | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, peppers, beans, summer squash, winter squash |
| November | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| December | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
A year in weather
McAllen peaks at about 87°F in August and bottoms near 61°F in January; September brings the heaviest rain (2.9 inches) and March the least (1.0 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 61° | 1.2″ |
| February | 63° | 1.2″ |
| March | 71° | 1.0″ |
| April | 76° | 2.0″ |
| May | 81° | 2.4″ |
| June | 85° | 1.6″ |
| July | 86° | 1.7″ |
| August | 87° | 1.9″ |
| September | 82° | 2.9″ |
| October | 77° | 2.3″ |
| November | 69° | 1.1″ |
| December | 63° | 1.0″ |
Regional context
Similar climates Palmhurst, TX, Mission, TX, Pharr, TX
In McAllen, modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo) put January near 61°F and July near 86°F — a 26°F seasonal arc — with about 20.4 inches of precipitation.
Precipitation in McAllen runs summer-dominant: September averages 2.9 inches from warm-season storms, while March drops to 1.0 inches under drier cool air. McAllen shares that warm-season-wet pattern with places like Palmhurst, TX, Mission, TX and Pharr, TX.
Hard freezes are rare in McAllen: the coldest month averages 61°F, so McAllen's growing window runs most of the year. August is the hottest stretch near 87°F, pushing cool-season crops to the milder shoulder months. McAllen beds by a wall stay warmer at night.
Similar climates: Palmhurst, TX, Mission, TX, Pharr, TX, Alton, TX, Lopezville, TX.
Frequently asked
- When does it freeze in McAllen?
- McAllen freezes in fewer than half of years — 48% of 1991–2020 years at the nearest NOAA station — so McAllen has no typical frost date.
- What is the rainy season in McAllen?
- September is the wettest month in McAllen, about 2.9 inches on average; the year totals roughly 20 inches.
- What is the warmest month in McAllen?
- August is McAllen's warmest month, averaging about 87°F.
- What is the coldest month in McAllen?
- McAllen bottoms out in January, with a mean near 61°F.
- When can I start a vegetable garden in McAllen?
- McAllen has no frost date to wait for, so sowing runs year-round; lettuce and greens do best when McAllen's coldest month settles near 61°F.
- What hardiness zone is McAllen?
- McAllen's hardiness zone tracks its winter low; with January near 61°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for McAllen?
- McAllen'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 McAllen?
- See this week's day-by-day rain chances for McAllen in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in McAllen?
- Current conditions for McAllen and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the McAllen forecast updated?
- The McAllen forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in McAllen?
- Today's sunrise and sunset times for McAllen 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 McAllen?
- The next few days in McAllen's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
McAllen sits at 26.2°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in McAllen
- 78501
- 78502
- 78503
- 78504
- 78505
- 78557
- 78573