Photo: Av9 · Public domainIrving reaches 100° on about 20 days a year, more than 95% of U.S. towns
A typical July afternoon reaches 96°, a January night drops to 36°, and about 2 inches of snow falls in a normal winter.
A year in Irving at a glance
Each month’s typical high and low, and what it brings.
What stands out about Irving’s climate
Compared with towns across the U.S., with Irving’s place in Texas beside it.
What a year in Irving feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 262 frost-free days a year
In half of years the last 32° night comes by March 8 and the first by November 24. Frost and day counts come from Dallas Ft Worth Airport, Irving’s official weather station (the one in National Weather Service reports), 4 miles from the city’s center point, at about the same height.
The 2023 USDA map puts Irving’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 19°. 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 2 inches of snow a winter
Snow, measured at Dallas Ft Worth Airport, falls mostly in February. Precipitation (rain plus melted snow) adds up to 39 inches a year; May is the wettest month and July the driest. Rain or snow falls on about 79 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Irving
44% 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 Dallas Ft Worth Airport.
Living with Irving’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
262 frost-free days in zone 8b. The last frost comes by Mar 8 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 24.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 31 miles of trails are waiting.
Parks & trails →Heat waves are 31% of the yearly building losses FEMA expects in Irving from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →Irving and its neighbors
Coppell has the coldest January nights next door (35°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Irving’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 |
|---|---|---|---|---|
| Irving, TX | 36° | 96° | 39" | 1.6" |
| Happy Valley, CA | 39° | 99° | 38" | 0.7" |
| Cayce, SC | 35° | 93° | 46" | 1.2" |
| Purcell, OK | 28° | 94° | 38" | 4.1" |
| Evans, GA | 35° | 92° | 45" | 0.8" |
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 Irving averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.0°).
A smaller shift than in 82% 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 257,000 people, part of the change is the city itself: pavement and buildings hold heat (the urban heat island).
How Irving compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Irving’s place among Texas’.
Irving weather by month
Highs, lows and precipitation from NOAA’s grid at Irving’s center; snow, wet days and snow on the ground from Dallas Ft Worth Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 57° | 36° | 2.5" | 0.1" | 7 | 0 | 42° – 55° |
| February | 61° | 40° | 2.8" | 1.0" | 7 | 1 | 42° – 59° |
| March | 69° | 48° | 3.5" | 0.3" | 8 | 0 | 52° – 64° |
| April | 76° | 55° | 3.4" | 0.0" | 7 | 0 | 60° – 71° |
| May | 83° | 64° | 4.8" | 0.0" | 9 | 0 | 70° – 79° |
| June | 91° | 72° | 4.0" | 0.0" | 7 | 0 | 79° – 86° |
| July | 96° | 75° | 2.0" | 0.0" | 4 | 0 | 81° – 91° |
| August | 96° | 75° | 2.3" | 0.0" | 5 | 0 | 79° – 93° |
| September | 89° | 68° | 3.1" | 0.0" | 5 | 0 | 74° – 85° |
| October | 79° | 57° | 4.6" | 0.0" | 7 | 0 | 62° – 73° |
| November | 67° | 46° | 2.8" | 0.0" | 6 | 0 | 50° – 63° |
| December | 58° | 38° | 2.9" | 0.2" | 7 | 0 | 40° – 53° |
| Year | 77° | 56° | 38.8" | 1.6" | 79 | 1 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 42° to 59°. June is the most reliable, staying within 8°.
Where Irving’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 Irving’s center.
- Snow: Dallas Ft Worth Airport (the official station).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Dallas Ft Worth Airport, 4 miles from the city’s center point, at about the same height; the city’s official station.
- 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 Irving’s climate
What is the weather like in Irving?
A typical July afternoon reaches 96°, a January night drops to 36°, and about 2 inches of snow falls in a normal winter. Milder January nights than 83% of U.S. towns; hotter July afternoons than 97% of U.S. towns.
How cold does it get in Irving in winter?
January nights average 36°. About 29 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 42°.
How much snow does Irving get?
About 1.6 inches in a normal winter at Dallas Ft Worth Airport, most of it in February, with snow on the ground about 1 days a year.
How hot does it get in Irving?
July, with a typical high of 96° and a low of 75°. About 106 days a year reach 90° and 20 reach 100° (Dallas Ft Worth Airport).
When is the first and last frost in Irving?
In half of years the last spring frost (32°) comes by March 8 and the first fall frost by November 24, about 262 frost-free days, at Dallas Ft Worth Airport.
What growing zone is Irving in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 19°.
What is the best time of year to visit Irving?
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 Irving getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 82% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Irving.
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.