Carrollton, Texas climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Carrollton's center at January lows of 35°F and July highs of 96°F, a yearly mean of 66.0°F and 39.2 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Richardson (9 miles E, 678 ft), has January lows of 36°F and July highs of 94°F.
135,456 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 56° 35°
- Feb 61° 39°
- Mar 68° 47°
- Apr 76° 54°
- May 83° 63°
- Jun 91° 71°
- Jul 96° 75°
- Aug 96° 74°
- Sep 89° 67°
- Oct 78° 56°
- Nov 67° 45°
- Dec 58° 37°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Carrollton's center.
What is each month like in Carrollton?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Richardson high | Richardson low |
|---|---|---|---|---|---|---|
| January | 56°F | 35°F | 45.8°F | 2.50 | 56°F | 36°F |
| February | 61°F | 39°F | 49.9°F | 2.84 | 60°F | 40°F |
| March | 68°F | 47°F | 57.5°F | 3.57 | 69°F | 48°F |
| April | 76°F | 54°F | 64.9°F | 3.44 | 75°F | 55°F |
| May | 83°F | 63°F | 73.2°F | 4.71 | 83°F | 64°F |
| June | 91°F | 71°F | 81.2°F | 3.96 | 90°F | 71°F |
| July | 96°F | 75°F | 85.2°F | 2.11 | 94°F | 75°F |
| August | 96°F | 74°F | 85.2°F | 2.36 | 95°F | 75°F |
| September | 89°F | 67°F | 77.9°F | 3.02 | 87°F | 67°F |
| October | 78°F | 56°F | 67.1°F | 4.75 | 78°F | 56°F |
| November | 67°F | 45°F | 55.9°F | 2.92 | 66°F | 46°F |
| December | 58°F | 37°F | 47.6°F | 3.06 | 57°F | 38°F |
In metric: a yearly mean of 18.9°C, January lows of 2°C, July highs of 35°C and 996 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Carrollton say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Richardson | 9 mi E | 678 ft | 65.8°F | 36°F | 94°F | 41.9 | – | March 7 |
| DallasDallas Fort Worth Airport | 9 mi SW | 560 ft | 66.6°F | 36°F | 96°F | 37.0 | 2 | March 8 |
| GrapevineGrapevine Dam | 9 mi W | 585 ft | 65.4°F | 34°F | 95°F | 38.9 | 0 | March 14 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Carrollton?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Richardson (9 miles E, 678 ft). NOAA publishes no snowfall normal for it; the nearest record that has one, Dallas (9 miles SW), gets 2 inches a year. The last spring frost (32°F) comes after March 7 in half of years and the first autumn frost before November 21.
The USDA's 2023 Plant Hardiness Zone Map puts Carrollton in zone 8b across its 3 ZIP code areas.
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (4.7 kWh per square metre a day, NASA POWER 2001-2020); July is the sunniest month (88%) and February the cloudiest (68%).
Richardson's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Carrollton; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00417588; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Carrollton, ZIP code by ZIP code?
3 ZIP code areas lie wholly or partly in Carrollton. On NOAA's grid 75006 is the warmest (66.0°F a year) and 75010 the coolest (65.6°F), so the city is nearly uniform. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 75006 | 8b | 66.0°F | 35°F | 96°F | 39.2 | Dallas Love Field (8 mi) | March 2 | November 29 |
| 75007 | 8b | 65.8°F | 35°F | 96°F | 39.3 | Richardson (9 mi) | March 7 | November 21 |
| 75010 | 8b | 65.6°F | 36°F | 95°F | 40.0 | Richardson (8 mi) | March 7 | November 21 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.