Dallas, Texas climate: Normal weather by month, frost dates and records

What is the weather like in Dallas each month?

July is the warmest month, with normal highs of 96°F; January the coldest, with normal lows of 36°F. The most precipitation falls in May (4.78 in), the least in July (2.08 in).

Each month has its own page with the day-by-day normals, the month's records and its recent years:

• Jan
• Feb
• Mar
• Apr
• May
• Jun
• Jul
• Aug
• Sep
• Oct
• Nov
• Dec

When is the best weather to visit Dallas?

Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, November has the fewest days with rain (6).

That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.

When is the last frost in Dallas?

In Dallas, the last spring frost (32°F) comes after March 8 in half of years and after March 26 in one year in ten; the first autumn frost comes before November 24 in half of years and before November 6 in one year in ten.

Last spring frost, half of years after

March 81 year in 10 after March 26; 9 in 10 after February 17

First autumn frost, half of years before

November 241 year in 10 before November 6; 9 in 10 before December 12

NOAA puts the median frost-free season at 262 days, and the season without a hard freeze (28°F) at 288 days.

A hard freeze (28°F) comes after February 25 in half of springs and before December 7 in half of autumns.

The USDA's 2023 Plant Hardiness Zone Map puts Dallas in zone 8b across its 50 ZIP code areas (8b in 75217, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Dallas's NOAA station is in zone 8b: the coldest night of a typical year reaches 18°F (30 complete years).

Frost dates for every NOAA station in Texas · Frost dates by ZIP code

What hardiness zone is each Dallas ZIP code in?

The USDA's 2023 map gives each ZIP code area one zone. Dallas's 50 ZIP code areas are all in zone 8b. Each ZIP's frost dates are in the frost tool.

How hot and how cold does it get in Dallas?

In a normal year in Dallas, 106 days a year reach 90°F (20 of them 100°F or more), 29 nights fall to 32°F or colder and 79 days bring measurable precipitation.

Days at 90°F or more

106a normal year

Days at 100°F or more

20a normal year

Nights at 32°F or colder

29a normal year

Days that stay below freezing

2high of 32°F or less

Days with 0.01 inch of precipitation

79a normal year

Days with 1 inch of snow or more

1a normal year

The highest temperature in Dallas's official record (kept by the National Weather Service since 1913) is 112°F, on June 27, 1980; the lowest is −3°F, on January 18, 1930.

The wettest calendar year on that record is 2015, with 68.02 in; the snowiest season is 1977–78, with 14.1 inches.

How humid and windy is Dallas, and how clear are its skies?

The summer (June-August) dew point averages 68°F. The muggiest month is June, with an average dew point of 69°F, above the 65°F at which most people call the air sticky; the driest air comes in December (34°F). March is the windiest month (12.4 mph on average), and September has the most clear or nearly clear hours (58%).

How sunny is Dallas?

Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Dallas, 4.8 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (71%). Among the 459 U.S. places of 50,000 or more, that ranks tied 125th (with 50 others) in sunshine.

How much heating and cooling does Dallas need?

A normal year in Dallas brings 2,220 heating degree days, 59% fewer than the median U.S. place (5,373), and 2,824 cooling degree days, 3.1 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,602 growing degree days a year above 50°F.

Has Dallas been warmer than normal lately?

2025 averaged 68.5°F, 1.9°F above the 1991-2020 normal of 66.6°F. 5 of the 5 complete years since 2021 ran warmer than the normal.

Over 68 complete years from 1948 to 2025, the station's annual mean temperature rose at a fitted 4.6°F per century (+0.25°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.

Which places near Dallas share this climate record?

2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.

• Irving, TXalso near: Dallas Love Field (7 mi, 68.0°F a year); Grapevine (8 mi, 65.4°F a year)258,060 people · 4 mi SE
• Euless, TXalso near: Arlington Six Flags (6 mi, 65.1°F a year); Grapevine (7 mi, 65.4°F a year)60,010 people · 5 mi SW

What do Dallas's other NOAA stations record?

2 more NOAA stations keep 1991-2020 normals in or near Dallas. This page uses Dallas Fort Worth Airport; the others differ by site and elevation, and the linked ones have pages of their own:

Nearby and next

• Dallas in OctoberThis month day by day, its records and recent years
• Texas climateThe statewide normals and every place in the state
• Grapevine, TX4 miles from this station, 65.4°F a year
• Dallas Love Field, TX10 miles from this station, 68.0°F a year
• Arlington Six Flags, TX10 miles from this station, 65.1°F a year
• Arlington, TX17 miles from this station, 66.8°F a year
• Compare two placesMonth by month, side by side

Download these normals (CSV) · JSON · How these figures are made