One page for Monterrey climate: monthly averages, sourced from public APIs and refreshed automatically. Expect 10.7 C at the coldest (Jan) and 22.5 C at the warmest (Jun) — a 11.8 C spread. Expect a wet season rather than rain year-round: Sep brings 4.41 mm/day against 0.47 mm/day in Dec. Taken together that is roughly 529 mm of rain a year for the grid cell. The build runs on a schedule and caches the last good response, so the numbers stay put even when the upstream API is having a bad day. The table underneath carries the per-month breakdown; the related pages cover the same dataset nearby.
Annual mean temperature 17.5 C
Warmest month Jun (22.5 C)
Coldest month Jan (10.7 C)
Wettest month Sep (4.41 mm/day)
All-time record high 38.8 C
All-time record low -7.1 C
Annual precipitation 529 mm / year
Coordinates 25.68435, -100.31721
Population 1,135,512
Average monthly temperature and rainfall in Monterrey
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
10.7
0.54
29.7
-5.7
Feb
13.1
0.52
32.2
-7.1
Mar
15.9
0.75
36.7
-4.0
Apr
19.8
0.78
37.4
2.6
May
21.8
1.41
38.8
2.6
Jun
22.5
1.84
36.3
11.1
Jul
21.8
2.77
35.4
12.3
Aug
21.8
1.86
34.9
11.6
Sep
19.6
4.41
33.2
7.1
Oct
17.5
1.40
32.4
1.0
Nov
13.9
0.66
31.2
-5.6
Dec
11.4
0.47
29.2
-5.8
What the Monterrey climate table shows
Values are multi-decadal climatological averages for the 25.68435, -100.31721 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 Monterrey get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.