Lake Dallas, TX climate
Lake Dallas has mild winters and hot summers. A typical July afternoon reaches 96°, a January night drops to 34°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Lake Dallas feels like
Winter
Spring
Summer
Fall
Lake Dallas weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 56° | 34° | 2.2" | 0 | 7 | 0 | 41° – 53° |
| February | 60° | 39° | 2.7" | 0.1" | 6 | 0 | 40° – 58° |
| March | 68° | 46° | 3.6" | 0 | 7 | 0 | 51° – 64° |
| April | 76° | 53° | 3.4" | 0 | 6 | 0 | 59° – 70° |
| May | 83° | 63° | 4.7" | 0 | 8 | 0 | 69° – 78° |
| June | 91° | 71° | 4.0" | 0 | 7 | 0 | 78° – 86° |
| July | 96° | 75° | 2.2" | 0 | 5 | 0 | 81° – 91° |
| August | 96° | 74° | 2.4" | 0 | 4 | 0 | 79° – 93° |
| September | 89° | 67° | 2.9" | 0 | 4 | 0 | 74° – 84° |
| October | 78° | 55° | 4.4" | 0 | 6 | 0 | 61° – 72° |
| November | 66° | 44° | 2.9" | 0 | 6 | 0 | 49° – 61° |
| December | 58° | 36° | 2.9" | 0 | 6 | 0 | 39° – 51° |
| Year | 76° | 55° | 38.3" | 0.1" | 72 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Lake Dallas
Lake Dallas gets 38 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 72 days a year.
About 251 frost-free days a year
In half of years the last 32° night comes by March 13 and the first one by November 20. That leaves about 251 frost-free days for gardens, longer than 90% of U.S. towns.
Heating and cooling a home in Lake Dallas
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Lake Dallas, 48% of that work is heating and 52% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Lake Dallas and its neighbors
Lake Dallas borders 3 towns with climate data. January nights across them vary by 0.2°. Shady Shores has the coldest January nights (34°) and Hickory Creek the hottest July afternoons (96°). Lake Dallas’s January low is 34° and its July high 96°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Lake Dallas compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Lake Dallas averaged 0.7° warmer than the 1900s. The biggest change is in January (+1.9°). The shift is smaller than in 87% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Lake Dallas’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 40° to 58°. June is the most reliable, staying within 8°.
Common questions about Lake Dallas’s climate
What is the coldest month in Lake Dallas?
January, with a typical high of 56° and a low of 34°.
What is the hottest month in Lake Dallas?
August, with a typical high of 96° and a low of 74°. About 95 days a year reach 90°.
How much snow does Lake Dallas get?
Almost none. A normal year brings 0.1 inches.
When is the first frost in Lake Dallas?
In half of years the first 32° night comes by November 20, and the last spring frost by March 13.
What is the rainiest month in Lake Dallas?
May, with 4.7 inches of rain and melted snow. The year totals 38 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Lake Dallas itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Lewisville Dam, TX (4 mi, snow) and Denton 2 Se, TX (7 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.