Hermosillo Weather

Under the Köppen climate classification, Hermosillo features a hot desert climate (BWh). Temperatures can range from as low as freezing in December and January to 48 °C (118.4 °F) in June and July. Rain falls mostly between July and September, with annual precipitation between 75 and 300 millimetres (3.0 and 11.8 in). Most of the vegetation here consists of mesquite trees as well as trees such as the desert ironwood, palo verde and the huisache. Desert animals such as the desert tortoise, rattlesnakes, bighorn sheep and lynx are the most notable species. Populations of feral red-masked parakeets and monk parakeets are a local sightseeing attraction here.

Hermosillo’s all-time weather record for high temperature is 49.5 °C (121.1 °F), which was achieved in June 2014. In recent years, the lowest temperature was −4 °C (24.8 °F), in December.

Average Temperature
Jan
73 °F
23 °C
Feb
72 °F
22 °C
Mar
82 °F
28 °C
Apr
85 °F
30 °C
May
84 °F
29 °C
Jun
96 °F
36 °C
Jul
99 °F
37 °C
Aug
99 °F
37 °C
Sep
93 °F
34 °C
Oct
90 °F
32 °C
Nov
82 °F
28 °C
Dec
70 °F
21 °C
Humidity
Jan
44%
Feb
44%
Mar
34%
Apr
26%
May
31%
Jun
30%
Jul
53%
Aug
58%
Sep
68%
Oct
45%
Nov
52%
Dec
62%
Rain
Jan
14mm
Feb
28mm
Mar
12mm
Apr
3mm
May
4mm
Jun
7mm
Jul
73mm
Aug
81mm
Sep
132mm
Oct
6mm
Nov
78mm
Dec
20mm
Clouds
Jan
14%
Feb
24%
Mar
19%
Apr
7%
May
3%
Jun
7%
Jul
32%
Aug
31%
Sep
22%
Oct
1%
Nov
36%
Dec
11%
Sun
Jan
5UVI
Feb
6UVI
Mar
9UVI
Apr
10UVI
May
10UVI
Jun
11UVI
Jul
11UVI
Aug
10UVI
Sep
9UVI
Oct
7UVI
Nov
5UVI
Dec
4UVI