Annual mean 19°C · wettest around May · prevailing wind S
Warmest
34.1 °C
Coldest
10.7 °C
Wettest
48%
Windiest
5.8 m/s
Prevailing
S
4.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Dallas over the whole year is 19°C. August is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 4°C. Dallas has no sharply defined rainy season: the chance of rain on a given day runs from 32% in July, the driest month, to 42% in May, the wettest. Winds in Dallas are highest in March, averaging 4.3 m/s (15 km/h), and lightest in September, at 2.7 m/s (10 km/h). The prevailing wind is from the S. The clearest skies in Dallas come in August, when the sky is typically 28% covered; February is the cloudiest month, at 48%.
Month by month Dallas climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
11°C
4°C
6°C
36%
41%
3.7 m/s
12
0
48
February
13°C
7°C
9°C
36%
48%
4.1 m/s
28
2
53
March
19°C
11°C
15°C
38%
44%
4.3 m/s
53
6
69
April
22°C
15°C
19°C
38%
48%
4.3 m/s
68
16
61
May
27°C
20°C
26°C
42%
47%
3.8 m/s
53
51
24
June
31°C
24°C
32°C
35%
35%
3.6 m/s
11
50
2
July
33°C
26°C
35°C
32%
28%
3.5 m/s
2
30
0
August
34°C
25°C
35°C
37%
28%
3.1 m/s
3
29
0
September
30°C
22°C
31°C
35%
32%
2.7 m/s
23
51
8
October
25°C
16°C
23°C
40%
32%
3.3 m/s
53
42
37
November
18°C
10°C
15°C
34%
40%
3.3 m/s
50
6
68
December
14°C
7°C
10°C
35%
45%
3.4 m/s
27
1
59
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Dallas weather by season
Year round, Dallas has days of about 11°C at their warmest in January, its coolest month, and 34°C in August, its warmest; the coolest hours of the day run from 4°C to 26°C through the year, and the average temperature over the year is 19°C around the clock. Rain is most likely around May and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Dallas weather in winterDecember to February
High 13°CLow 6°CRain 36%
Winter in Dallas has typical daily highs of about 13°C and lows of about 6°C, with a 36% chance of rain on a given day.
Dallas weather in springMarch to May
High 23°CLow 15°CRain 39%
Spring in Dallas has typical daily highs of about 23°C and lows of about 15°C, with a 39% chance of rain on a given day.
Dallas weather in summerJune to August
High 33°CLow 25°CRain 35%
Summer in Dallas has typical daily highs of about 33°C and lows of about 25°C, with a 35% chance of rain on a given day.
Dallas weather in autumnSeptember to November
High 24°CLow 16°CRain 36%
Autumn in Dallas has typical daily highs of about 24°C and lows of about 16°C, with a 36% chance of rain on a given day.
When is the rainy season in Dallas?
Dallas has no sharply defined rainy season: the chance of rain on a given day runs from 32% in July, the driest month, to 42% in May, the wettest.
What time of year is Dallas windiest?
Winds in Dallas are highest in March, averaging 4.3 m/s (15 km/h), and lightest in September, at 2.7 m/s (10 km/h). The prevailing wind is from the S.
What is the average temperature in Dallas year round?
The average temperature in Dallas over the whole year is 19°C. August is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 4°C.