This is the short version of Hermosillo climate: monthly averages, with the monthly detail underneath. The gap between Dec and Jul is 15.8 C here: 15.8 C against 31.6 C. Precipitation peaks in Jul (3.56 mm/day) and bottoms out in May (0.04 mm/day), so a 89.0x difference between the two. Taken together that is roughly 379 mm of rain a year for the grid cell. Values come from a public open API; a successful result is cached so a later outage never blanks the page. Scroll for the month-by-month figures, or jump to a neighbouring location from the links below.
Annual mean temperature 24.1 C
Warmest month Jul (31.6 C)
Coldest month Dec (15.8 C)
Wettest month Jul (3.56 mm/day)
All-time record high 49.0 C
All-time record low -1.4 C
Annual precipitation 383 mm / year
Coordinates 29.08874, -110.96677
Population 812,229
Average monthly temperature and rainfall in Hermosillo
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
16.0
0.53
34.8
-1.4
Feb
17.1
0.45
38.6
-1.1
Mar
20.2
0.28
39.4
5.4
Apr
23.1
0.06
40.7
7.2
May
26.6
0.04
42.9
10.4
Jun
31.5
0.39
49.0
17.2
Jul
31.6
3.56
48.6
20.5
Aug
31.0
3.18
46.3
20.9
Sep
29.6
2.65
45.2
16.0
Oct
25.4
0.44
43.8
7.3
Nov
20.4
0.51
39.5
3.3
Dec
15.8
0.38
33.9
1.2
What the Hermosillo climate table shows
Values are multi-decadal climatological averages for the 29.08874, -110.96677 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
How much rain is 3.56 mm/day in a month?
Rain is recorded as a daily mean, so 3.56 mm/day is roughly 108 mm across a 30-day month.
Does Hermosillo get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.