A consolidated reference for Dallas climate: monthly averages, rebuilt from public data on a schedule. Expect 6.4 C at the coldest (Jan) and 30.1 C at the warmest (Aug) — a 23.7 C spread. Expect a wet month and a dry month but no real season: 3.75 mm/day in May against 1.79 mm/day in Jul. Taken together that is roughly 921 mm of rain a year for the grid cell. Every run re-reads the source and only rewrites this page when a figure actually changed. Scroll for the month-by-month figures, or jump to a neighbouring location from the links below.
Annual mean temperature 18.6 C
Warmest month Aug (30.1 C)
Coldest month Jan (6.4 C)
Wettest month May (3.75 mm/day)
All-time record high 45.3 C
All-time record low -11.2 C
Annual precipitation 923 mm / year
Coordinates 32.78306, -96.80667
Population 1,326,087
Average monthly temperature and rainfall in Dallas
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
6.4
1.87
27.7
-11.2
Feb
8.6
2.36
30.8
-9.9
Mar
13.7
2.84
30.7
-8.7
Apr
18.3
2.75
37.4
-0.7
May
22.9
3.75
39.2
4.0
Jun
27.5
3.21
42.2
14.3
Jul
29.8
1.79
45.3
17.7
Aug
30.1
2.01
44.9
15.8
Sep
25.8
2.56
42.3
10.2
Oct
19.2
3.29
37.0
-2.5
Nov
12.9
1.91
32.7
-6.3
Dec
7.6
1.96
28.9
-10.0
What the Dallas climate table shows
Values are multi-decadal climatological averages for the 32.78306, -96.80667 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Does Dallas get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.