S
M
T
W
T
F
S
28
68°
56°
29
67°
55°
30
66°
56°
1
67°
57°
2
65°
57°
3
67°
58°
4
67°
58°
5
69°
57°
6
69°
58°
7
68°
58°
8
69°
57°
9
68°
57°
10
65°
58°
11
66°
58°
12
68°
59°
13
69°
58°
14
68°
58°
15
65°
56°
16
66°
57°
17
68°
58°
18
69°
59°
19
69°
57°
20
68°
58°
21
70°
59°
22
71°
60°
23
Hist. Avg.
67°
55°
24
Hist. Avg.
67°
55°
25
Hist. Avg.
66°
55°
26
Hist. Avg.
66°
55°
27
Hist. Avg.
66°
56°
28
Hist. Avg.
66°
56°
29
Hist. Avg.
66°
56°
30
Hist. Avg.
66°
56°
31
Hist. Avg.
66°
56°
1
Hist. Avg.
66°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Penryn
Penryn's July 2026 forecast shows daily high temperatures ranging from 65° to 71°, with overnight lows between 55° and 60°. The average high for July is 68° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Penryn. See also: August | September | October.